CN1121193C - Polymerization method of optical polymerable composition for dental ust and optical solidification instrnment for dental using said method - Google Patents
Polymerization method of optical polymerable composition for dental ust and optical solidification instrnment for dental using said method Download PDFInfo
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- CN1121193C CN1121193C CN97121404A CN97121404A CN1121193C CN 1121193 C CN1121193 C CN 1121193C CN 97121404 A CN97121404 A CN 97121404A CN 97121404 A CN97121404 A CN 97121404A CN 1121193 C CN1121193 C CN 1121193C
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Abstract
The invention relates to an arrangement (1) for checking the quality of balls (2) in respect of their diameter (D) and any damage to their periphery (3), in particular intended for checking golf balls (2). A diameter gauge device (4) extending along at least part of the diameter (D) of an aforementioned ball is situated at a distance from a bottom support (5) so arranged as to support a ball (2) accommodated in the arrangement (1) for checking.
Description
Technical field
The present invention relates to the method for the polymeric dental photopolymerisable compositions of a clock, it can be used for the dental caries filling treatment, the present invention also relates to the light beam luminous organ that a clock is used for light polymerisable compound filling treatment dental caries.
Background technology
In recent years, the polymerizable dentistry compositions (composite resin) that comprises polymerisable monomer, polymerization initiator and inorganic filler is improving to some extent aspect physical strength, mar proof, colour reproduction and the reproduction of tooth form, thereby not only be widely used in the tooth filling treatment of dental caries and, and be used for the application of many other directions as the corona material.Wherein expanded its market, because it is easy to use and handles and be one of popular product now with other photopolymerizable composite resin of radiation of visible light initiated polymerization.
Yet, found that the polymerizable composite resin has its problem, i.e. polymerization shrinkage.Especially, when photopolymerizable composite resin experience polyreaction, sizable shrinkage stress takes place, and causes the formation in slit between final polymeric composite resin and empty wall.Shrinkage stress may feel that with the patient pain is relevant during tooth treatment, and the slit between polymeric composite resin and empty wall often constitutes the reason of tooth filling loss and produces second dental caries.Therefore, tried hard to avoid the formation in slit, but is that all right merit.
As for the photocuring instrument, at present the popular photocuring instrument that uses comprise light source that halogen-tungsten lamp is housed, comprise be used to control light source switch with the control device that is used to be provided with the timer between the light period, the chiller of cooling fan is housed and comprises the light guide that fibre-optic bundle becomes diameter 6 to 16mm, so design the photocuring instrument so that shine the photopolymerizable composite resin of filling tooth cavity downwards with wide high-strength light.Found to make it be difficult to eliminate because the polyreaction of photopolymerizable composite resin is shunk slit and the splintering problem that produces with above-mentioned Photocureable instrument device polymerization light polymerizable composite resin.
As an example, when using the luminous ray of launching from the photocuring instrument to be radiated at the photopolymerizable composite resin of filling the cylindrical tooth cavity from the top, the top of photopolymerizable composite resin will be cured so that on inner sealing tooth cavity surface in initial several seconds owing to polyreaction.Along with proceeding of irradiation, the polyreaction of photopolymerizable composite resin continues to be deep in the tooth cavity.Yet, find inevitably to shrink to form the slit and break because of polyreaction.The light intensity of shining is high more, and photopolymerization reaction is fast more.Thereby photopolymerization reaction is fast more, and the contraction of photopolymerizable composite resin is fast more, therefore, the formation in slit and break just easy more.
Also use the method that is radiated at the photopolymerizable composite resin of filling in the tooth cavity from the tooth cavity top, can not determine that concerning the dentist whether the photopolymerizable composite resin in tooth cavity is solidified by complete polymerization, also often occurs in the photopolymerizable composite resin bottom polymerization not yet in the tooth cavity.In case this takes place, just there is the monomer composition in the polymeric composite resin not to be penetrated into intrapulpal danger with high concentration.
In view of the above problems, the clear 64-15037 of disclosed Japanese publication communique disclosed a kind of local light polymerization of compensate for shrinkage in 1989.According to this communique, prepare two kinds of photopolymerizable composite resins to different light wave sensitivities.First kind of photopolymerizable composite resin imposed on the wall of tooth cavity, then carry out filling with second kind of photopolymerizable composite resin.After this, second kind of photopolymerizable composite resin of irradiation polymerization, and then first kind of photopolymerizable composite resin of photopolymerization.Be described in disclosed method in this patent gazette can effectively reduce the contraction that in tooth cavity, produces owing to polyreaction to tooth bring any may disadvantageous effect.
Obviously disclosed method has following two kinds of characteristics in the above-mentioned patent gazette of mentioning: in the first step; if before the curing corresponding to the material of protection hole wall and the first photopolymerizable composite resin that uses with relative little quantity; at first make the polymeric words of the second photopolymerizable composite resin as main filler; can make the mobile and distortion of the first photopolymerizable composite resin compensate the polyreaction contraction that in the second photopolymerizable composite resin, takes place, finish the contraction of the second photopolymerizable composite resin and do not influence tooth unfriendly with activation.
In second step, both made with post polymerization and used the compound tree of first photopolymerizable with relative a small amount of, but as long as use it on a small quantity, because the adverse effect to tooth that the contraction of the first photopolymerizable composite resin brings can be reduced to minimum degree.
Yet above mentioned patent gazette not only be can not determine special material and the compositions that is used for this purpose, and therein disclosed method determine real complicated, thereby therein openly the technique effect of method be controversial.Especially; consider that polymerizable dentistry composite resin is pulp-like or pasty state; even and the hole wall is owing to the first photopolymerizable composite resin is protected; but attempting with the second photopolymerizable composite resin filling little hole as cavity is to be difficult to very much finish and not only the first photopolymerizable composite resin flows or distortion, and the part edge in hole can be covered by the second photopolymerizable composite resin more or less.In other words, when at first solidifying the second photopolymerizable composite resin by polyreaction, described composite resin will be on the tooth cavity opening part covering of formation, make it be difficult in tooth cavity, avoid developing the polymer shrinkage stress.
In addition, the first and second photopolymerizable composite resins are known as with the corresponding light irradiation initiation of different wave length and carry out polyreaction.Yet Photoepolymerizationinitiater initiater is generally insensitive to the light of selecting some single wavelengths, but the wavelength sensitive of contrast broad.Further in the photocuring instrument that uses Halogen light, the light of therefrom launching has the wavelength in broadband.Thereby, when the photopolymerization second photopolymerization composite resin, be difficult to guarantee to prevent that the first photopolymerization composite resin from causing its polyreaction that therefore the inevitable second photopolymerizable composite resin finally forms covering above the tooth cavity opening.
Owing to reason discussed above, the disclosed suggestion of the patent gazette of mentioning in the above obviously has many an open questions still.
On the other hand, inventors of the present invention have carried out a series of experiments, wherein utilize and disperse rod (LUCIWEDGE, can buy from Howe Neos Dental Inc.) the light source end that makes laser beam pass it is incorporated in the light dispersion rod, simultaneously the free end at the light dispersion rod of light source end opposite is inserted in the composite resin.As a result, inventors have found when the fundamental quantity laser beam of so introducing outside when illuminated from the periphery surface of whole rod, and irradiated laser beam intensity is higher than in the place near the light source end away from terminal any other place of light source.As for the degree by laser beam polymeric composite resin, inventors have be sure of that also the head of composite resin is fully solidified, and are cured hardly at the free-ended a part of composite resin of contiguous this rod.
Even the rod that will be made by transparent plastic in the replacement light dispersion rod that is undertaken by present inventors or pipe are inserted in the experiment in the composite resin, obtain being similar to The above results, promptly a part of composite resin major part of contiguous this rod light source end is aggregated, but the free-ended a part of composite resin of contiguous this rod seldom is cured.In the fact, formerly in the light guide of Miao Shuing, from the laser beam of contiguous light source end portion rod scattering fundamental quantity and little from the laser beam quantity of the free end scattering of rod from the gained result.
Therefore, adopt laser beam to be incorporated into the interior conventional techniques of composite resin, have a trend only contiguous tooth cavity opening and thereby, a part of composite resin of contiguous light source at first is cured, and the remainder of contiguous tooth cavity bottom composite resin can not fully be cured, and therefore, still unresolved between polymerization period in the wall of hole the relevant problem of the development of shrinkage stress.
Summary of the invention
Therefore, the invention is intended to provide a kind of method, promptly cause in the tooth hole or the composite resin of filling in the dentistry mould carries out polyreaction from filling composite resin bottom, basically eliminate the relevant problem of composite resin polymerization shrinkage stress development in the tooth cavity thus, and a kind of photocuring instrument of implementing said method is provided.
Another free-revving engine of the present invention just provides a kind of method and a kind of photocuring instrument, wherein the dental curing light instrument tip is so can handle arbitrarily, so that prevent that the dentist is subjected to the influence of patient's body fluid such as blood and saliva and prevent that also the patient is subjected to the influence of body fluid when reusing this instrument.
Basically eliminate the variety of issue that runs into so far when carrying out broad research by inventors of the present invention, found when laser beam enters into photopolymerizable dental composition (composite resin), light is tending towards being included in filler in the photopolymerizable composite resin and is scattered to a large extent and scatters with spherical form in the photopolymerizable composite resin, promptly not only extends with incident direction but also to extend with the incident direction rightabout.Found that also dentine has the feature of scattering and the as many incident illumination of photopolymerizable composite resin, a large amount of incident illumination at the bottom of the hole reflects towards the photopolymerizable composite resin.The present invention is based on these discoveries.
The invention provides a kind of usefulness comprise emission laser beam light source with the optically coupled light guide that has extended of light source and have photocuring instrument polymerization light polymerizable dentistry method for compositions with the relative photocell of light source.At least photocell.According to this method, filling photopolymerizable dental composition in the tooth mould or in the hole will be incorporated into position near the bottom, hole by fibre-optic photocell subsequently in the photopolymerizable dental composition by optical fibers preparation.Then, be 350 to 500nm laser beam irradiation photopolymerizable dental compositions from the photocell distal portion with 10 to 100mW emission wavelengths, make the photopolymerizable dental composition gradually from hole bottom to its surface portion initiated polymerization.
Photocell by the optical fibers preparation can cut so that stay fibre-optic far-end in the solidified photopolymerizable dental composition in the hole at the position near solidified photopolymerizable dental composition surface.Has the fibre-optic method that the photopolymerizable dental composition is not had the affinity surface with the another kind use, be aggregated at the photopolymerizable dental composition and can from solidified photopolymerizable dental composition, remove optical fibers after solidifying, availablely subsequently stay the cavity of solidifying the photopolymerizable dental composition from the filling of the solidified photopolymerizable dental composition of top irradiation by removing optical fibers then.
The present invention also provides a kind of dental curing light instrument, produce the light source of 350 to 500nm wave length laser beams when it is included in 10 to 100mW (milliwatts), and have with the immediate end of coupling on the light source optics and also have in certain end far away photocell elongation light guide.At least described photocell be optical fibers and by equipped introduce be filled in the dentistry mould or the photopolymerizable dental composition in the hole in the tooth so that near hole bottom position place irradiates light polymerizable dentistry compositions.
Photocell can be the whole parts of light guide, that is, the far-end of light guide perhaps can be separation member therefrom.At photocell is under the situation of isolating member from light guide, and dental photocuring instrument can further comprise the dismountable optical coupling mechanism that is inserted between photocell and the light guide far-end and take off idol so that allow photocell to select to be coupled on the light guide and with light guide.
At photocell is to form under the situation of optical fibers far-end of light guide, and the photocuring instrument also can be included in the far-end that is used to cut and nearby cutting mechanism is installed so that isolate far-end from fibre-optic remainder.
Described photocell has and can have photopolymerizable dental composition affinity or the surface that do not have affinity.
The photocuring instrument also can comprise and prevents the anti-pollution outer housing of light guide by humoral pollution.
In implementing the inventive method, the dentist since remove the left hole that in tooth, forms, dental caries infected zone of tooth after, must put on bonding agent (commercially available) on the photopolymerizable dental composition as adjuvant, and then carry out filling in the hole of photopolymerizable dentistry composite resin, its volume is slightly smaller than the hole internal volume.After this, being used in the photocell that draws deeply the light guide end far away in the filling composite resin in the hole is incorporated into photocuring instrument of the present invention in the patient mouth.At this moment, the optical fibers that forms photocell is inserted into the bottom that can contact the hole or can be near the bottom position in hole.Be filled with composite resin in the required scheduled time scope of the polyreaction of finishing composite resin by rayed then from the emission of optical fibers end portion.
After polyreaction, from the hole, take out optical fibers, perhaps the method by cutting optical fibers is retained in the hole to separate fibre-optic end far away optical fibers.From patient's mouth, take out light guide then.
Photocuring instrument of the present invention comprises that light source, light source both can be used as the global facility of separating in the light guide or separated parts with control device, light guide and photocell, photocell.
In being inserted into the hole, where optical fibers is strict if being stayed, in the hole filling composite resin near surface location place cutting optical fibers.Afterwards, the required tooth that makes damaged that makes additional amount returns to the photopolymerizable composite resin that is similar to original-shape and is deposited on above the solidified composite resin to form resin surface layer, then uses up from the top and shines this resin surface layer to cause the polymerization of additional photopolymerizable composite resin.After finishing curing, solidified composite resin is adjusted meticulously and ground to finish the reparation of tooth.
It is also noted that to be similar to said method and can finish and utilize the dentistry mould to prepare artificial tooth.When above-mentioned situation, filling photopolymerizable compositions in the mould groove then makes it carry out polyreaction with photocuring instrument of the present invention so that solidify.
When implementing with dental curing light instrument of the present invention, method of the present invention is brought following advantage.
1, progressively carries out polymerization to the surface in hole because of the photopolymerizable composite resin that is filled in the tooth hole or the dentistry form cavity is interior from the bottom in hole, so can not leave over uncured a part of photopolymerizable composite resin in the bottom in hole, and the photopolymerizable composite resin can be by full solidification with an one integral body.
2, can advantageously reduce to occur along with the generation of polymerization shrinkage stress in photopolymerizable composite resin and the impaired danger of interdental bonding contact surface place's tack coat, have the least disadvantage of the cured composite resin in the hole between composite resin and tooth, to carry out firm bonding.
3, the formation in slit between photopolymerizable composite resin and tooth, do not occur, therefore, do not cause the possibility that the vegetative place of dental caries has avoided dental caries to reproduce thus.
Be positioned at the dental caries depths though 4 are damaged the position, possibility stays a part of photopolymerizable composite resin that approaches the hole inner bottom part and is not aggregated.Therefore, some composition that almost can reduce the photopolymerizable composite resin fully is penetrated into intrapulpal danger.
5, because from being incorporated into the optical fibers generation radiation in the hole, so can and have dentist's eyes may be subjected to the dangerous situation of high-strength light radiation damage from the outside radiant light of mouth.
6, because photocell can be handled easily and handle is sterilizablely to reuse for each patient, so can avoid the cross infection of dentistry disease between the patient.But being used for photocell easy to handle covering is preferred to identical purpose.
Can be by acrylic plastics or the optical fibers of in the invention process, using in the quartz preparation.Yet acrylic resin is preferably as the optical fibers material because can low price buy it and it can show the affinity good with the photopolymerizable composite resin, reason is that the latter is prepared by acyclic compound.
Make the part optical fibers stay the place of cured composite resin, the preferred light guide fiber has the affinity surface to the light curable composite resin and is used for strengthening bonding between final cured composite resin and optical fibers.Unless at optical fibers with reached gratifying bonding between the cured composite resin, the place can form small slit at the bonding contact surface, thereby second dental caries dyes sense and may take place.
Prepared fibre-optic place by acrylic plastics, the surface with affinity may be an optical fibers itself.Yet, being used as the occasion of optical fiber material at quartz, fibre-optic surface can have affinity to form coating to the photopolymerizable composite resin with silane coupler.
By removing fibre-optic occasion in the cured composite resin, optical fibers preferably has the surface that the photopolymerizable composite resin is not had affinity, so that smoothly remove optical fibers from solidified composite resin.By forming surface with affinity with nonpolar any polyolefin, synthetic rubber or the fibre-optic surface of fluoropolymer-coated.
Even form the cavity as removing fibre-optic result, with the required cavity of the abundant filling of photopolymerizable composite resin.
The light source that is used for photocuring instrument of the present invention can be can emission wavelength to be the laser of 350 to 500nm laser beam type.Preferably, above mentioned laser can be to comprise (the Nd:Y with Nd:YAG
3Al
5O
12) be the quasiconductor of the light beam of 946nm as the laser medium and the emission wavelength that can vibrate, and be to comprise the KN (KNbO that uses the nonlinear optics crystalline solid
3) resonator is with the solid-state laser of the harmonious ripple (473nm) of resonance second.The solid-state laser of said structure is called the second harmonious light source that is installed in the internal type resonator.
Use another kind of method, light source can be can emission wavelength be the semiconductor laser of 350 to 500nm laser beams, or the lamp of halogen one tungsten lamp or metal halide lamp and so on for example.Occasion using lamp must carefully apply heat with exempt from customs examination damaged position, for this reason, can use infrared cut filter to lamp.
Also can use the light emitting diode array to replace laser, when this situation, the light of launching from led array is focused on.
Select the light of wavelength in 350 to 500nm according to underlying cause: if light wave is shorter than 350nm, the patient can be subjected to ultraviolet influence unfriendly, if but light wave is longer than 500nm, just can not cause photopolymerization reaction.As for light intensity, using laser to need 10 to 100mW, but using lamp as the light source occasion as the light source occasion, need 10 to 200mW.Because laser beam is coherent beam and can sends light intensity to finish the purpose of photopolymerization composite resin so laser beam intensity can be lower than from lamp showing good characteristic aspect the curing photopolymerizable composite resin.Under any situations,, can not cause the photopolymerization reaction of composite resin in the middle of two if intensity is lower than MIN words, if but intensity is higher than maximum, and the patient will be subjected to the adverse effect of the heat that sent by light.
The control device that is used for photocuring instrument of the present invention can comprise that timer and/or control light source " are opened " or the switch of " passs ", optionally closes or opens from light source to fibre-optic optowire, and be provided with and carry out the time bar that shines.
The light guide that is used for photocuring instrument of the present invention can be, for example, be used for conducting the light that comes out with fibre-optic form from light source and pass light and collect optical system and arrive optical fibers, so that luminous energy arrives to such an extent that insert photocell in the hole effectively.The optical fibers that forms light guide can be single filament or multiply filament, and can comprise many segment of fiber that optically link together.
In enforcement of the present invention, importantly form the photocell that is inserted in the photopolymerizable composite resin by optical fibers.When attempting the light dispersion rod, for example disclosed among the clear 64-15037 of Japanese patent gazette that formerly discusses, when perhaps the transparent light guide rod that does not have the light dispersion performance being inserted into the hole of using the photopolymerizable composite resin filling, the light dispersion rod is in all directions scatter incident light, can not be only from bottom, hole initiated polymerization, on the other hand, transparent rods can not provide gratifying result, because a large amount of incident illuminations is sewed at the hole opening part.
Opposite in addition, optical fibers is from its side surface emitting incident light, but only from outwards launching in its end portion of light source opposite, so, can progressively realize using up satisfactorily shining from the bottom, hole of tooth or dentistry mould.Also because optical fibers has minimum diameter, and relatively, can easily finish with respect to the fibre-optic insertion of photopolymerizable composite resin, exist and remove with light dispersion rod.
With the photocell that is inserted into the optical fibers form in the hole be can from light guide, separate or cut away easily easily be implemented in the solidified post processing of photopolymerizable composite resin in the hole with activation.Can handle this photocell and no longer utilization.
An embodiment of photocuring instrument of the present invention comprises light source and with the light guide of single continuous photoconduction fibers form, this is preferably increased the fibre cutting machine structure.Be placed on position near the light guide far-end to the fibre cutting machine structure, for the far-end from its reserve part cutting optical fibers, so that fibre-optic far-end made dirty by patient's blood and/or saliva, and this is owing to be inserted into result in the dentistry hole.Most preferably use fresh optical fibers to carry out dental treatment to a patient.
Can carry out fibre-optic cutting discussed above with scissors or cutter.Yet,, preferably cutting mechanism is placed in handle place on the optical fibers that is installed in passage by the dentist from handling viewpoint easily.As an example, handle can have the button propulsion blade of a pressure with cutting optical fibers, perhaps thrust is delivered to suitable rod in case at the desired location place by this stick end place by the dress the blade cuts optical fibers.
Can between light guide and photocell, put into and to discharge coupling mechanism.Yet, can discharge coupling mechanism and can cause probably from the incident scattering of light of light guide to the photocell propagation.Therefore, for the utilization to greatest extent of light, single continuous optical fibers is quite effective.
Can discharge coupling mechanism and can have actuator and/or the fibre-optic axle of the effective mutually coupling of adapter.
Being used for optical fibers of the invention process must have such diameter so that when in the photopolymerizable composite resin that optical fibers is inserted into filling in the hole, will not clean this composite resin.Therefore, fibre-optic diameter preferably is not more than 1.5mm, more preferably no more than 1mm, most preferably is not more than 0.8mm.Being used for optical fibers of the invention process can be single filament or multiply filament, as long as it can satisfy the needs of the diameter of above-mentioned discussion.But preferably use sub-thread optical fibers filament, because its loss light is low.
The length of optical fibers far-end can not be fixed, because it is relevant with the design of light guide.But can take light guide near the handle of the position at damaged position occasion when fiber-optic device has, the preferred light guide fiber stretches out handle far-end 5mm or more.When by holding handle or being held under the arm a fiber and the far-end of continuous light fiber is inserted into occasion in the hole at damaged position by tweezers or any device of holding under the arm that other is fit to, optical fibers can have several meters total length.When optical fibers has when length is arranged very, preferably use bobbin that long optical fibers is rolled.
Fibre-optic shape is relevant with the previous fibre-optic length of discussing.If optical fibers stretches out about 5mm from the handle far-end, extension can be straight.But when its fundamental length surpassed about 5mm and its and held under the arm the position processing with tweezers, it can have the radian of diameter in 10 to 50mm scopes.
Photocuring instrument of the present invention decision design has effectively to be avoided by blood samples of patients and/or saliva contamination.Because the distal part of light guide is vulnerable to above-mentioned pollution, so other should be coated also for this purpose, handle can play the covering effect simultaneously.Use another kind of method,, can on handle one side, protecting tube be installed, pass this protecting tube and make light guide avoid polluting near light source for other covering.
Use another kind of method again, auxiliary covering is passable, combines hands and the remainder except the light guide far-end that is used for coating the dentist separately or with above-mentioned covering.Use this coating, light guide and dentist can prevent to suffer the pollution of patient's body fluid.This coating can be the bag form of being made by resin sheet, and optical fibers is passed through, and dentist's handle is inserted in the coating with the light guide of holding simultaneously.In addition or auxiliary coating promptly discardable after each patient uses.
In the invention process, can advantageously use the photopolymerizable composite resin to comprise polymerisable monomer, polymerization initiator, packing material and suitable additive.The polymerisable monomer that can use in the photopolymerizable composite resin comprises simple function and/or multifunctional (methyl) acrylate that comprises (methyl) alkyl acrylate (carbon atom number is 1 to 10 in the alkyl), polyalkylene 1,2-ethylene glycol bisthioglycolate (methyl) acrylate (carbon atom number is 2 to 20), glycol oligomer two (methyl) acrylate (2 to 10 quantum) bisphenol-A two (methyl) acrylate, 2, two [to (r-methacryloxy-beta-hydroxy-propoxyl group) phenyl] propane of 2-, 2,2-two (the many ethoxyl phenenyls of 4-methacryloxy) propane (has 2 to 10 oxirane (etoxy) base at 1 intramolecularly, trimethylolpropane tris (methyl) acrylate, and tetramethylolmethane four (methyl) acrylate: urethane (methyl) acrylate of the product between 2 moles of (methyl) acrylate with hydroxyl and the 1 mole of vulcabond, especially, for example be disclosed in the clear 55-33687 of Japanese patent gazette or disclose monomer among the clear 56-152408 of Japanese publication communique.These monomers can be separately or two kinds or multiple these monomer mixture forms use.Monomeric preferred use amount is 10 to 50wt% in compositions.
The polymerization initiator or the catalyst that can be used in the photopolymerization composite resin can be any known polymerization initiators, for example, as be disclosed in α-diketone and tertiary amine among clear 48-49875 of Japanese publication communique and the clear 60-26002, perhaps as be disclosed in α-diketone and peroxide among clear 57-203077 of Japanese publication communique and the clear 60-149603.Catalyst amount is 0.1 to 5wt% based on polymerisable monomer weight.
Can be used for packing material in the photopolymerizable composite resin and comprise various inorganic, organic or inorganics and organic composite filling material.Its exemplary comprises silicon dioxide (quartz, quartz glass or silica gel) or aluminium oxide.In addition, for inorganic filling material, the glass that also can contain siloxanes is as Main Ingredients and Appearance and each heavy metal species, boron and/or aluminum, various potter's clay, clay material as kieselguhr, Kaolin (Kanone) or montorillonite clay (monmolinite), active hargil, synthetic zeolite, Muscovitum, fluorizated calcium, calcium phosphate, barium sulfate, zirconium dioxide, titanium dioxide.
Surface treatment for filler, can use any known silane coupler, it comprises organosilicone compounds, for example, ω-methacryloxy alkyl trimethoxysilane (carbon number between methacryloxy and siloxanes atom is 3 to 12), vinyltrimethoxy silane, VTES, vinyltriacetoxy silane.
The photopolymerizable composite resin that is used for the invention process is passable, if necessary, comprises various additives known, comprises, for example, stabilizing agent and/or one or more are planted pigment.
Description of drawings
When combining, will from the explanation of following preferred embodiment, more clearly understand the present invention with accompanying drawing.Yet, provide embodiment and accompanying drawing only for the description and interpretation purpose, do not limit the scope of the invention.In the accompanying drawings, same reference numbers is used to represent the same parts in the whole view, and
Figure 1A is the dental photocuring instrument sketch map of expression first preferred embodiment according to the present invention;
Figure 1B amplifies specification schematic side figure to solidify the instrument distal part shown in Figure 1A, and expression is inserted in the optical fibers far-end with the formation photocuring instrument in the hole of photopolymerizable composite resin filling;
Fig. 2 is the photocuring instrument sketch map of expression according to second preferred embodiment of the present invention.
Fig. 3 is the photocuring instrument sketch map of representing according to the third preferred embodiment of the present invention.
Fig. 4 is the schematic side figure that is shown in the improved form of photocuring instrument among Figure 1A, uses this figure to be used for illustrating the present invention in an embodiment; And
Fig. 5 A to 5C shows the schematic cross-section representative graph of carrying out the sequence of exemplary dental treatment with photocuring instrument of the present invention.
The specific embodiment
Figure 1A explanation is by the photocuring instrument of the present invention's first preferred embodiment.Photocuring instrument shown here comprises LASER Light Source 1 and the light guide 2 that extended for example have with light source 1 optics on the optical fibers of the end of coupling and far-end or assembling be inserted in as shown in Figure 1B the photocell 5 of filling photopolymerizable composite resin bottom among the hole H during dental treatment.The photocuring instrument also comprises assembling to be held the dentist and is installed in the handle of installing on adjacent its far-end 5 light guides 2 parts 3.Handle 3 in listed embodiment also plays the covering effect to light guide 2 parts.Hands lid thing that installation is made by polyethylene or auxiliary covering 10 are so that the pollution in the patient mouth that sealing handle 3 is avoided treating in order to protection handle 3 and dentist's hands except the far-end 5 of light guide 2.
In use, the dentist must reach its hands in the hands lid thing 10 and catch handle 3 then.Shown in Figure 1B, the far-end 5 of light guide 2, after handle 3 being aimed at the tooth of existing dental caries in the patient mouth, stretch in the tooth cavity H into to bottom position, so that can make the photopolymerizable composite resin M of filling hole H gradually from section H when passing light guide 2 near hole H bottom institute filling composite resin when introducing from the light of light source near tooth cavity H
1Towards surface portion H near dental surface filling composite resin M
2Polymerization.
The photocuring instrument of Fig. 2 explanation second preferred embodiment according to the present invention.In this embodiment, opposite with first embodiment, photocell 5A separates with light guide 2, and is used for the light guide 2 general far-end terminations that have it at the bump pad with handle 3 distal faces of this embodiment of Fig. 2.By means of the distal face place that the light collecting device 6 that can be the collecting lens element is installed to handle 3 with the installation frame 8 of light collecting device 6.
According to the photocuring instrument of second preferred embodiment also comprise general medicated cap shape adapter or by means of, for example, spiral or jointer screw attachment method are installed detachability ground covers installation frame 8 from the outside rotary connector 9.Adapter 9 forms a dismountable photoconduction coupling mechanism and comprises that photocell 5A for example passes light collecting device 6 and light guide 2 optically coupled optical fiberss.In the case, light guide 2 can be rod or the pipe of being made by transparent plastic.
Fig. 3 represents the photocuring instrument of the 3rd preferred embodiment according to the present invention.This photocuring instrument comprises LASER Light Source 1, with the elongation of single continuous photoconduction fibers form light guide 2, be installed in handle 3 near the part of the light guide 2 of the far-end 2a of light guide 2, be installed in the optical fibers cutting button 12 that also plays the optical fiber cutting apparatus effect on handle 3 distal portions, guiding sheath 13 for light guide 2 far-end 2a guiding with the metal tube form, be used for making light guide 2 to prevent the other covering 14 that when contacting, polluted and in order to batch the optical fibers bobbin 15 that light guide 2 is installed on the LASER Light Source top with patient mouth.
Make from optical fibers bobbin 15 and extract outwardly that light guide 2 (optical fibers in this case) passes out and after passing covering 14 and handle 3, keep in the positions in the groove of guiding sheaths 13, have the far-end 2a of the formation photocell 5 that exposes from guiding sheath 13 outwardly.When the dentist pushes fiber cutting button 12, cutting blade (not showing) is advanced in handle 3 with cutting light guide 2, far-end 2a is separated from light guide 2.When releasing imposed on the thrust of fiber cutting button 12, because the effect of bias spring (not showing), cutting blade automatically retracted to the inoperative position.
In dental treatment contaminated and therefore may go out of use after, the far-end 2a of light guide 2 is so from the reserve part cutting of light guide 2.After discarded far-end 2a, the dentist can extract light guide 2 out from bobbin 15 makes fresh far-end 2a expose from guiding sheath 13 outwardly.
Now come the present invention by some illustrative embodiment explanations of not planning to limit the scope of the invention.
Embodiment 1
In this embodiment, utilize the structure of photocuring instrument, comprise, as shown in FIG. 4, the solid-state laser of being made by the quasiconductor that can oscillation wavelength be 473nm light is directed to the short fiber that passes the photocell that light guide 2 forms as second harmonic and the laser beam that wherein so produces from solid-state laser 1 and ties up 5B.In this photocuring instrument as shown in Figure 4, use light guide 2 and short optical fibers 5B with the fibre-optic form of making by quartzy and acrylic plastics respectively.For with the distal end optical coupling of the light guide 2 of two optical fibers axles coupling, will lack optical fibers 5B movably and insert in the far-end of handle 3.
At diameter is 10mm, the dark 10mm of being is as filling the commercial photopolymerizable dentistry composite resin of buying in the transparent glass tube of tooth cavity substitute, " CLEARFILL AP-X (A2 color) ", and subsequently with the optical fibers (ESCA of diameter 0.5mm, by and can be from Mitsubishi Rayon Co., Ltd, Japan makes and buys).By the dentistry composite resin in the 36mV rayed glass tubing as in the various times as shown in the following table 1., from glass tubing remove solidified and adhere to dentistry composite resin ESCA fiber on, remove with the thin paper that soaked ethanol and stick to the not polymeric composite resin part of cured composite resin outer surface thereafter.Cured composite resin has shown general sphere, measures its diameter with micrometer.Measurement result is shown in Table 1.
Table 1
| Irradiation time (second) | 2 | 3 | 5 | 7 | 10 | 20 |
| The diameter of cured resin (mm) | 4.0 | 4.4 | 5.4 | 6.0 | 6.4 | 7.8 |
As experimental result, demonstrated the photopolymerizable dentistry composite resin and partly be cured near incident illumination from it gradually, also demonstrate so fully scattering and be transmitted into the light of photopolymerizable composite resin so that the orientation and the directionality of losing light.
Forming diameter in the new person who pulls out grinds one's teeth in sleep occlusion portion is 5mm, is the class hole of 4mm deeply, is used in binding agent identical among the embodiment 1 and the polymerizable of a little light slightly composite resin filling together identical in embodiment 1 then in the hole.After filling, be inserted into deeply in the H of hole so that arrive shown in Fig. 5 A forming the ESCA fiber 5B of a part, and shine filling composite resin M20 second near its bottom position at the photocell of describing among the embodiment 1.After this, shown in Fig. 5 B, cutting ESCA fiber 5B with the position of the top surface basic horizontal of filling composite resin M, and shown in Fig. 5 C, the top surface that the other same light polymerizable composite resin M of consumption is added to filling composite resin M to be coronal resin stack thing MA with formation and to pull out people's tooth of grinding one's teeth in sleep in order reproducing.
After this, use from photocuring instrument emission laser beam from last quadrature according to resin stack thing MA and finish dental prosthetic thus.After this, make the human body of having repaired the tooth of grinding one's teeth in sleep be subjected to heat test 1000 times, each test be sample be placed on 4 ℃ following 1 minute, be placed on then 60 ℃ following 1 minute.As the thermal cycling test result, do not find the separation from human body is ground one's teeth in sleep of solidified composite resin.
After thermal cycling test, in 37 ℃ of following human bodies of having repaired are ground one's teeth in sleep the aqueous solution that is immersed in 0.1% basic fuchsin one day, be cut into half then.Observing each has partly repaired the human body tooth facet of grinding one's teeth in sleep and has shown that no dyestuff penetration do not find the slit yet.
Comparative example
In the human body that pulls out is ground one's teeth in sleep, form the hole with embodiment 2 same sizes, subsequently by utilize with embodiment 2 in identical binding agent be used in this hole of photopolymerizable composite resin filling identical among the embodiment 2.Use commercially available photocuring instrument, " SPECTRUM " (can buy light intensity from Dentsply: 700mW/cm
2), from 20 seconds of 3mm position above filling composite resin emission light to cause the polyreaction of filling composite resin.As irradiation results, at toroid along the white concentric of discovery on the edge surface in hole.When grinding one's teeth in sleep and be immersed in 0.1% basic fuchsin aqueous solution, 1 transit time, observe along white toroid and run through orchil having therein the human body of filling composite resin.
As shown in Figure 3, use the LASER Light Source identical with embodiment 1, directly the laser beam guiding with the acrylic light guide fiber 2 of polyurethane coating (ESCA can be from Mitsubishi Rayon Co., Ltd, Japan buys).The Photocureable instrument utensil have be similar to the structure shown in Fig. 3 and therein the far-end 2a of optical fibers 2 from the outstanding outwardly 6mm of the far-end of handle 3.Long optical fibers compact winding is only extracted out the optical fibers that needs length from optical fibers bobbin 15 around the optical fibers bobbin 15 that is installed in photocuring instrument top and between its operating period.
The occlusion portion formation diameter of grinding one's teeth in sleep the patient is 4mm and is the one-level hole of 3mm deeply, the same binder and the composite resin that use among filling such as the embodiment 2 in the hole.Subsequently the far-end 2a of the optical fibers 2 of photocuring instrument be inserted near the position at the bottom of the hole and according to 20 seconds of laser beam with cured composite resin.After cured composite resin, from grinding one's teeth in sleep, the patient takes out the far-end 2a of optical fibers 2, in cured composite resin, stay void column shape hole.Execute the same compound resin of other consumption in cylindrical bore subsequently and above the top surface of cured composite resin to form resin stack thing in order to reproduce grinding one's teeth in sleep of patient, representative is similar to the crown shape of original-shape.
Thereafter, use identical photocuring instrument, the 3mm place settles optical fibers above the hole in the patient grinds one's teeth in sleep, and 20 seconds of irradiation laser light beam are to solidify the composite resin of filling in addition.
After the dental prosthetic treatment, to discard not sembling to be cut away by the far-end 2a of the optical fibers 2 of patient's humoral pollution, handle 3, guiding sheath 13 and other covering 14 sterilizations are used in order to later.
Although fully described the present invention in conjunction with preferred its embodiment with reference to the accompanying drawing of the purpose that only is used to explain, those skilled in the art will easily expect according to many changes and improvements of reading in the observed framework of explanation that the present invention proposes in this literary composition.Therefore, these changes and improvements deviate from scope of the present invention unless they leave additional claim, all are believed to comprise interior.
Claims (8)
1, a kind of with photocuring instrument polymerization light polymerizable dentistry method for compositions, this photocuring instrument comprise the light source of launching laser beam and optically with the elongation of light source coupling light guide, described light guide has photocell on the light source opposite, at least described photocell is an optical fibers, and described method comprises the following steps:
Filling photopolymerizable dental composition in the hole in the die cavity of dentistry mould or in tooth;
Fibre-optic photocell is incorporated in the photopolymerizable dental composition to the position near the bottom, hole; And
Using from photocell end portion wavelength 10 to 100mW the time is 350 to 500nm laser beam irradiation photopolymerizable dental composition so that emerging polymerizable dentistry compositions gradually near the hole base section to its surface portion initiated polymerization.
2, by the desired method of claim 1, also be included near solidifying photopolymerizable dental composition surface location place and cut described optical fibers photocell, so that in the hole, stay the fibre-optic step in solidifying the photopolymerizable dental composition.
3, by the desired method of claim 1, wherein there is not the optical fibers on affinity surface to form described photocell to the photopolymerizable dental composition by having, and from solidified photopolymerizable dental composition, remove fibre-optic step after also being included in polyreaction, owing to remove the step that optical fibers is stayed the cylindricality cavity of solidifying in the photopolymerizable dental composition, reach the step of the other photopolymerizable compositions of polymerization with other photopolymerizable dental composition filling.
4, a kind of dental photocuring instrument comprises:
For producing wavelength 10 to 100mW the time is the light source of 350 to 500nm laser beams;
Have and optically coupled proximal end of light source and the light guide that also had in the elongation of the photocell of its far-end; At least described photocell is optical fibers and is inserted in the die cavity of dentistry mould or the photopolymerizable dental composition of filling in the tooth hole by equipped, so that near tooth cavity bottom position place irradiates light polymerizable dentistry compositions; With
Be placed in the dismountable optical coupling mechanism between photocell and the light guide far-end, photocell is selected to be coupled on the light guide and to take off coupling from light guide so that allow.
5, by at the desired dental curing light instrument of claim 4, also comprise being used for cutting light guide so that from light guide, separate the cutting mechanism of photocell.
6, by claim 4 or 5 desired dental photocuring instruments, wherein described at least photocell has a pair of photopolymerizable dental composition to have the surface of affinity.
7, by claim 4 or 5 desired dental photocuring instruments, wherein described at least photocell has a pair of photopolymerizable dental composition not have the surface of affinity.
8, by claim 4 or 5 desired dental photocuring instruments, also comprise preventing to pollute covering and polluted so that prevent light guide.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP271398/96 | 1996-09-20 | ||
| JP271389/1996 | 1996-09-20 | ||
| JP27139896A JPH1097166A (en) | 1996-09-20 | 1996-09-20 | Cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1182575A CN1182575A (en) | 1998-05-27 |
| CN1121193C true CN1121193C (en) | 2003-09-17 |
Family
ID=17499512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97121404A Expired - Fee Related CN1121193C (en) | 1996-09-20 | 1997-09-20 | Polymerization method of optical polymerable composition for dental ust and optical solidification instrnment for dental using said method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH1097166A (en) |
| CN (1) | CN1121193C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101563048B (en) * | 2006-12-04 | 2012-08-15 | 电子技术应用设计公司 | Automatic photopolymerisation device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4671316B2 (en) * | 2001-03-19 | 2011-04-13 | キヤノン株式会社 | Cleaning device |
| JP4624024B2 (en) * | 2004-07-29 | 2011-02-02 | 京セラミタ株式会社 | Image forming apparatus cleaning device |
| JP2008158123A (en) * | 2006-12-22 | 2008-07-10 | Kyocera Mita Corp | Cleaning device for electrostatic latent image carrier |
| JP5380468B2 (en) * | 2011-01-06 | 2014-01-08 | 京セラドキュメントソリューションズ株式会社 | Cleaning device and image forming apparatus having the same |
| DE102012018384A1 (en) * | 2012-09-18 | 2014-03-20 | Ivoclar Vivadent Ag | Device and method for the application of composites |
| JP6300015B2 (en) * | 2014-04-07 | 2018-03-28 | 株式会社リコー | Powder conveying member, powder conveying apparatus, developing apparatus, process unit, and image forming apparatus |
| KR20170058977A (en) * | 2014-09-17 | 2017-05-29 | 개리슨 덴탈 솔루션즈, 엘엘씨 | Dental curing light |
| EP3106124B1 (en) * | 2015-06-17 | 2019-09-04 | Ivoclar Vivadent AG | Light hardening device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666405A (en) * | 1983-02-21 | 1987-05-19 | Ericson Dan V | Method and apparatus for polymerising light-hardening dental fillings of class II type composite material |
| US4666406A (en) * | 1984-01-13 | 1987-05-19 | Kanca Iii John | Photocuring device and method |
| US4764118A (en) * | 1985-02-28 | 1988-08-16 | Bernard Touati | Fixation of rigid pieces such as a dental prosthesis |
| US5007837A (en) * | 1987-03-26 | 1991-04-16 | Ellena | Differential photopolymerization process used for filling a dental cavity and a tool intended for its implementation |
| EP0591613A1 (en) * | 1992-10-08 | 1994-04-13 | Heraeus Kulzer GmbH | Protective device for a medical radiation apparatus |
| US5503559A (en) * | 1993-09-30 | 1996-04-02 | Cedars-Sinai Medical Center | Fiber-optic endodontic apparatus and method |
-
1996
- 1996-09-20 JP JP27139896A patent/JPH1097166A/en active Pending
-
1997
- 1997-09-20 CN CN97121404A patent/CN1121193C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4666405A (en) * | 1983-02-21 | 1987-05-19 | Ericson Dan V | Method and apparatus for polymerising light-hardening dental fillings of class II type composite material |
| US4666406A (en) * | 1984-01-13 | 1987-05-19 | Kanca Iii John | Photocuring device and method |
| US4764118A (en) * | 1985-02-28 | 1988-08-16 | Bernard Touati | Fixation of rigid pieces such as a dental prosthesis |
| US5007837A (en) * | 1987-03-26 | 1991-04-16 | Ellena | Differential photopolymerization process used for filling a dental cavity and a tool intended for its implementation |
| EP0591613A1 (en) * | 1992-10-08 | 1994-04-13 | Heraeus Kulzer GmbH | Protective device for a medical radiation apparatus |
| US5503559A (en) * | 1993-09-30 | 1996-04-02 | Cedars-Sinai Medical Center | Fiber-optic endodontic apparatus and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101563048B (en) * | 2006-12-04 | 2012-08-15 | 电子技术应用设计公司 | Automatic photopolymerisation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1097166A (en) | 1998-04-14 |
| CN1182575A (en) | 1998-05-27 |
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