CN104127253A - Method for measuring orthodontic force of traceless appliance with coating thickness compensation - Google Patents
Method for measuring orthodontic force of traceless appliance with coating thickness compensation Download PDFInfo
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- CN104127253A CN104127253A CN201410392815.9A CN201410392815A CN104127253A CN 104127253 A CN104127253 A CN 104127253A CN 201410392815 A CN201410392815 A CN 201410392815A CN 104127253 A CN104127253 A CN 104127253A
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Abstract
The invention relates to a method for measuring the orthodontic force of a traceless appliance with coating thickness compensation. The method is characterized by comprising the following steps of reserving a sensor space in an original digital dental model after the digital original dental model is obtained, i.e., a space adaptive to the coating thickness and shape of a sensor is removed from the corresponding position on the surface of a tooth to be moved, which means that the coating thickness compensation is performed to obtain the digital dental model with a reserved sensor space; designing a digital target dental model on the original digital dental model according to an orthodontic scheme, and manufacturing the sensor-space-reserved solid dental model and a solid target dental model; and manufacturing a traceless appliance on the solid target dental model, mounting the sensor on the sensor-space-reserved solid dental model, wearing the traceless appliance on the sensor-space-reserved solid dental model and measuring the orthodontic force by virtue of the sensor. The method is accurate in measurement, simple and practical, and low in implementation cost.
Description
Technical field
The present invention relates to seamless appliance in stomatology and rescue power field of measuring technique, particularly a kind of seamless appliance with coating thickness compensation is rescued force measuring method, can be used for measuring and analyzing the seamless stressing conditions of rescuing in process of tooth.
Background technology
Without bracket invisible orthotic device, in the 1997 Nian U.S., occur.Without bracket invisible orthotic device, on the basis of computer-aided design and processing, with its stealth, attractive in appearance, comfortable feature, receive numerous doctors and patient's concern.Without the development of bracket invisible orthotic device rapidly, it is rescued scope and is also constantly expanded in recent years.
The whole workflow of Invisible bracketless technique is: get tooth jaw formpiston or former, chromatography acquisition digitized tooth mould, malocclusion computer-aided diagnosis, correcting process calculating Aided Design, each stage master mold design of correcting process, each stage master mold processing of correcting process, each stage appliance making of correcting process.Advantage without bracket invisible orthotic device has: (1) good looking appearance, comfortable wearing; (2) oral hygiene is easy to safeguard; (3) occur that oral cavity emergency case number of times is less; (4) the other operating time of chair is relatively short.
At present, correcting the translation amount of each stage tooth and amount of spin is more to determine according to doctor's clinical experience, because the difference of individual tissue characteristics often causes in rescuing process active force excessive, makes patient produce pain.Therefore, by the active force system to invisible orthotic device and the research of action effect, can make correction doctor formulate more rationally effectively therapeutic scheme, designer also can design more perfectly personalized seamless appliance.
Survey the most direct method of invisalign power and use exactly force transducer, force transducer is placed in to the contact surface of tooth and appliance, measure extruding force between the two.Some scholar's research invisalign power is to have used foil gauge at present, force transducer etc., but due to stomatology invisalign to rescue power small, dental surface and invisible orthotic device contact area and contact gap are tight, high to the size of sensor, thickness and pliability requirement in measuring process, directly accurately to measure invisalign power and be difficult to accomplish.
Summary of the invention
The object of the present invention is to provide a kind of seamless appliance with coating thickness compensation to rescue force measuring method, the method is not only measured accurately, and simple, and implementation cost is low.
For achieving the above object, technical scheme of the present invention is: a kind of seamless appliance with coating thickness compensation is rescued force measuring method, after obtaining original dental jaw digital model, on described original dental jaw digital model, reserve sensor space, treating the relevant position removal of moving teeth surface and sensor coating thickness, the space that shape adapts, carry out coating thickness compensation, obtain the tooth jaw digital model in reserved sensor space, on described original dental jaw digital model, according to rescuing conceptual design, go out target tooth jaw digital model, then produce tooth jaw physical model and the target tooth jaw physical model in reserved sensor space, on described target tooth jaw physical model, produce seamless appliance, by installation of sensors on the tooth jaw physical model in described reserved sensor space, then described seamless appliance is worn on the tooth jaw physical model in described reserved sensor space, and goes out to rescue power by sensor measurement.
Further, the above-mentioned seamless appliance with coating thickness compensation is rescued force measuring method, comprises the steps:
Step S1, by 3 D laser scanning patient tooth jaw plaster model, obtains original dental jaw digital model;
Step S2 reserves sensor space on described original dental jaw digital model: the scheme of rescuing of formulating according to doctor, utilize digitized forward engineering software to treat that at described original dental jaw digital model relevant position, moving teeth surface removes and sensor coating thickness, space that shape is identical, obtain reserving the tooth jaw digital model in sensor space;
Step S3 obtains tooth jaw physical model: on described original dental jaw digital model, according to rescuing scheme, move tooth to be rescued position, obtain target tooth jaw digital model, then the tooth jaw digital model in reserved sensor space and target tooth jaw digital model are imported to rapidform machine, utilize Stereolithography technology to obtain tooth jaw physical model and the target tooth jaw physical model in reserved sensor space;
Step S4 utilizes vacuum forming technology to produce seamless appliance on described target tooth jaw physical model;
Step S5 controls temperature and humidity with simulation human body true oval environment by calorstat;
Step S6 measures the power of rescuing that is imposed on tooth by seamless appliance: after calibrating sensors, described sensor is fixed on to the lip-deep test point of tooth jaw physical model in described reserved sensor space, connecting circuit, then described seamless appliance is correctly worn on the tooth jaw physical model in described reserved sensor space, by described sensor, measures in real time the power of rescuing that is imposed on tooth by seamless appliance.
Further, described step S2 specifically comprises the steps:
Step S201, according to the stickup situation of the required sensor of dynamometry, measures sensor coating thickness and overall dimensions;
Step S202, based on described original dental jaw digital model, designs the outline dimensional drawing of sensor on digitized forward engineering software;
Step S203 treats on moving teeth at described original dental jaw digital model, the outline dimensional drawing of described sensor is carried out to projection to the normal direction of this dental surface;
Step S204 moves the distance identical with sensor coating thickness by the patch of projection gained along projecting direction, thereby is treating moving teeth surface removal and sensor coating thickness, the space that shape is identical;
Step S205 filling cavity, obtains the tooth jaw digital model in reserved sensor space.
Further, described sensor is thin film single-point force transducer.
Further, the paste position of described sensor, is chosen in tongue side or cheek side that described original dental jaw digital model is treated moving teeth.
Further, reserved sensor space is that a shape, the degree of depth adapt with overall dimensions, the coating thickness of described sensor respectively, so that described sensor can embed space therebetween.
Further, sensor coating thickness comprises the thickness summation of silica gel piece, bio-medical glue and sensor.
Compared to prior art, the invention has the beneficial effects as follows for the seamless appliance of stomatology and rescue in force measurement process, it is tight that seamless appliance is worn on dental surface contact gap, it is the stress that Tooth Movement amount adds the amount of movement of upper sensor adhered layer thickness that sensor sticks on the power that dental surface surveys, the inaccurate problem of dynamometry causing, a kind of force measuring method with coating thickness compensation is proposed, the method pastes with sensor the space that thickness is identical at digitized tooth model surface removal, produce original dental jaw and the target tooth jaw three-dimensional entity model in reserved sensor space, on the corresponding facing of target dentognathic model, adopt vacuum forming technology to produce seamless appliance, finally this seamless appliance is worn on the original dental gnathode of reserving sensor space and rescues force measurement, effectively solved the inaccurate problem of measurement that sensor coating thickness brings, and measuring method is simple, cost is low, there is very strong practicality and wide application prospect.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the inventive method.
Fig. 2 is the schematic diagram of measuring system corresponding to the inventive method.
The specific embodiment
The present invention has the seamless appliance of coating thickness compensation and rescues force measuring method, after obtaining original dental jaw digital model, on described original dental jaw digital model, reserve sensor space, treating the relevant position removal of moving teeth surface and sensor coating thickness, the space that shape adapts, carry out coating thickness compensation, obtain the tooth jaw digital model in reserved sensor space, on described original dental jaw digital model, according to rescuing conceptual design, go out target tooth jaw digital model, then according to the tooth jaw digital model in described reserved sensor space and target tooth jaw digital model, produce tooth jaw physical model and the target tooth jaw physical model in reserved sensor space respectively, on described target tooth jaw physical model, produce seamless appliance, by installation of sensors on the tooth jaw physical model in described reserved sensor space, then described seamless appliance is worn on the tooth jaw physical model in described reserved sensor space, and goes out to rescue power by sensor measurement.
Concrete, as shown in Figure 1, the above-mentioned seamless appliance with coating thickness compensation is rescued force measuring method, comprises the steps:
Step S1, by 3 D laser scanning patient tooth jaw plaster model, obtains original dental jaw digital model.
Step S2 reserves sensor space on described original dental jaw digital model: the scheme of rescuing of formulating according to doctor, utilize digitized forward engineering software to treat that at described original dental jaw digital model relevant position, moving teeth surface removes and sensor coating thickness, space that shape is identical, after filling-up hole, obtain reserving the tooth jaw digital model (Fig. 2) in sensor space.Wherein, filling-up hole refers to, translational surface tri patch on original dental jaw digital model certainly will produce cavity after moving on all-moving surface edge, therefore this hole need to be filled and done smooth treatment.Step S2 specifically comprises the steps:
Step S201, according to the stickup situation of the required sensor of dynamometry, measures sensor coating thickness and overall dimensions.In the present embodiment, described sensor is thin film single-point force transducer.
Step S202, based on described original dental jaw digital model, designs the outline dimensional drawing of sensor on digitized forward engineering software.
Step S203 treats on moving teeth at described original dental jaw digital model, the outline dimensional drawing of described sensor is carried out to projection to the normal direction of this dental surface.In the present embodiment, the paste position of described sensor, is chosen in tongue side or cheek side that described original dental jaw digital model is treated moving teeth.
Step S204 moves the distance identical with sensor coating thickness by the patch of projection gained along projecting direction, thereby is treating moving teeth surface removal and sensor coating thickness, the space that shape is identical.Sensor coating thickness comprises the thickness summation of silica gel piece, bio-medical glue and sensor.
Step S205 filling cavity, obtains the tooth jaw digital model in reserved sensor space.Reserved sensor space is that a shape, the degree of depth adapt with overall dimensions, the coating thickness of described sensor respectively, so that described sensor can embed space therebetween.
Step S3 obtains tooth jaw physical model: on described original dental jaw digital model, according to rescuing scheme, move tooth to be rescued position, obtain target tooth jaw digital model, then the tooth jaw digital model in reserved sensor space and target tooth jaw digital model are imported to rapidform machine, utilize Stereolithography technology to obtain tooth jaw physical model and the target tooth jaw physical model in reserved sensor space;
Step S4 utilizes vacuum forming technology to produce seamless appliance on described target tooth jaw physical model.
Step S5 controls temperature and humidity with simulation human body true oval environment by calorstat.
Step S6 measures the power of rescuing that is imposed on tooth by seamless appliance: after calibrating sensors, described sensor is fixed on to the lip-deep test point of tooth jaw physical model in described reserved sensor space, connecting circuit, obtains measuring system as shown in Figure 2.Then described seamless appliance is correctly worn on the tooth jaw physical model in described reserved sensor space, by described sensor, measures in real time the power of rescuing that is imposed on tooth by seamless appliance.
Below in conjunction with a specific embodiment, the invention will be further described.
The present invention has the seamless appliance of coating thickness compensation and rescues force measuring method, realizes as follows seamless appliance and rescues power measurement:
(1) tooth jaw three dimensional data collection.The patient's who is provided by odontologist tooth jaw physical model, utilizes 3-dimensional digital Laser Scanning Equipment to obtain the digitized geometric model of patient's tooth jaw plaster model.
(2) on patient's original dental jaw digital model, reserve sensor space.The individuation correcting scheme of formulating according to doctor, utilizes forward engineering software to treat in digital detal cast that moving teeth surface is removed with sensor and pastes the patch space that thickness is identical, obtains the original dental jaw digital model in reserved sensor space after filling-up hole.
(2.1) according to the stickup situation of the required thin film single-point force transducer of dynamometry, measure coating thickness and the sensor overall dimensions of sensor, design based on this headspace of sensor.
(2.2) based on original dental jaw digital model, on forward engineering software, set up sketch plane, design the planar profile dimensional drawing of sensor.
(2.3) choose the facing curved surface tri patch of testing force tooth position, try to achieve this normal to a surface direction, the sensor profile planar dimension figure, to carrying out projection along normal direction towards facing direction, has just been obtained to the outline dimensional drawing of sensor on facing.
(2.4) according to sensor coating thickness, the sensor curved profile figure of projection gained on facing is moved to corresponding distance along projecting direction, now on facing, there is the outer shape of indent, it is identical that this indent region and sensor are pasted shared space.
(2.5) fill up the cavity of above-mentioned model, can obtain the tooth jaw digital model in reserved sensor space.
(3) acquisition of tooth jaw physical model.On original dental gnathode, according to the scheme of rescuing, move tooth to be rescued position and obtain target tooth jaw digital model, the original dental jaw digital model in reserved sensor space and target tooth jaw digital model are imported to rapidform machine, utilize Stereolithography technology under the control of computer, to produce original dental jaw physical model and the target tooth jaw physical model in reserved sensor space.
(4) take target tooth jaw physical model is caster, utilizes vacuum forming technology to produce appliance blank, according to use, wears requirement, blank is processed and is repaired and make seamless appliance.
(5) select sensor and test macro.According to embodiment dental surface size to be measured, selecting induction region is thin film single-point force transducer and the test macro thereof of diameter 1mm, and this test macro comprises thin film single-point force transducer, data acquisition processing circuit, data connecting line etc.Data acquisition processing circuit mainly comprises the communication module of operational amplifier, ADC transducer and data output.
(6) calibration thin film single-point force transducer.According to different loading amount, by pull and push dynamometer, on thin film single-point force transducer, make F-R figure and F-1/R figure, recalibration repeatedly, until F-1/R figure is good linear relationship, stops calibration, guarantees sensor accuracy.
(7) utilize calorstat simulation human oral cavity environment.In calorstat, arrange and control the temperature and humidity in anthropoid oral cavity, model is put into the seamless power of rescuing that this calorstat is tested tooth.
(8) measure the miniature power of rescuing that is imposed on tooth by seamless appliance.Thin film single-point force transducer is fixed on to the lip-deep test point of original dental jaw physical model in reserved sensor space, connecting circuit, above-mentioned seamless appliance is correctly worn on the original dental jaw physical model in reserved sensor space, measures in real time the power of rescuing that is imposed on tooth by seamless appliance.
(8.1) at thin film single-point force transducer contact surface, paste silica gel piece, with bio-medical glue, sensor is fixed in tooth jaw physical model pilot to be measured, realize interlayer contact measurement, protection sensor.
(8.2) outfan of thin film single-point force transducer concatenation operation amplifying circuit, ADC change-over circuit successively, the communication module of finally exporting by data is connected on computer.
(8.3) seamless appliance is worn to the original dental jaw physical model into reserved sensor space, required seamless appliance completely in place, now just can show in real time the power of rescuing on computers.
Be more than preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention, when the function producing does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (7)
1. a seamless appliance with coating thickness compensation is rescued force measuring method, it is characterized in that, after obtaining original dental jaw digital model, on described original dental jaw digital model, reserve sensor space, treating the relevant position removal of moving teeth surface and sensor coating thickness, the space that shape adapts, carry out coating thickness compensation, obtain the tooth jaw digital model in reserved sensor space, on described original dental jaw digital model, according to rescuing conceptual design, go out target tooth jaw digital model, then produce tooth jaw physical model and the target tooth jaw physical model in reserved sensor space, on described target tooth jaw physical model, produce seamless appliance, by installation of sensors on the tooth jaw physical model in described reserved sensor space, then described seamless appliance is worn on the tooth jaw physical model in described reserved sensor space, and goes out to rescue power by sensor measurement.
2. a kind of seamless appliance with coating thickness compensation according to claim 1 is rescued force measuring method, it is characterized in that, comprises the steps:
Step S1, by 3 D laser scanning patient tooth jaw plaster model, obtains original dental jaw digital model;
Step S2 reserves sensor space on described original dental jaw digital model: the scheme of rescuing of formulating according to doctor, utilize digitized forward engineering software to treat that at described original dental jaw digital model relevant position, moving teeth surface removes and sensor coating thickness, space that shape is identical, obtain reserving the tooth jaw digital model in sensor space;
Step S3 obtains tooth jaw physical model: on described original dental jaw digital model, according to rescuing scheme, move tooth to be rescued position, obtain target tooth jaw digital model, then the tooth jaw digital model in reserved sensor space and target tooth jaw digital model are imported to rapidform machine, utilize Stereolithography technology to obtain tooth jaw physical model and the target tooth jaw physical model in reserved sensor space;
Step S4 utilizes vacuum forming technology to produce seamless appliance on described target tooth jaw physical model;
Step S5 controls temperature and humidity with simulation human body true oval environment by calorstat;
Step S6 measures the power of rescuing that is imposed on tooth by seamless appliance: after calibrating sensors, described sensor is fixed on to the lip-deep test point of tooth jaw physical model in described reserved sensor space, connecting circuit, then described seamless appliance is correctly worn on the tooth jaw physical model in described reserved sensor space, by described sensor, measures in real time the power of rescuing that is imposed on tooth by seamless appliance.
3. a kind of seamless appliance with coating thickness compensation according to claim 2 is rescued force measuring method, it is characterized in that, described step S2 specifically comprises the steps:
Step S201, according to the stickup situation of the required sensor of dynamometry, measures sensor coating thickness and overall dimensions;
Step S202, based on described original dental jaw digital model, designs the outline dimensional drawing of sensor on digitized forward engineering software;
Step S203 treats on moving teeth at described original dental jaw digital model, the outline dimensional drawing of described sensor is carried out to projection to the normal direction of this dental surface;
Step S204 moves the distance identical with sensor coating thickness by the patch of projection gained along projecting direction, thereby is treating moving teeth surface removal and sensor coating thickness, the space that shape is identical;
Step S205 filling cavity, obtains the tooth jaw digital model in reserved sensor space.
4. a kind of seamless appliance with coating thickness compensation according to claim 2 is rescued force measuring method, it is characterized in that, described sensor is thin film single-point force transducer.
5. a kind of seamless appliance with coating thickness compensation according to claim 2 is rescued force measuring method, it is characterized in that the paste position of described sensor is chosen in tongue side or cheek side that described original dental jaw digital model is treated moving teeth.
6. a kind of seamless appliance with coating thickness compensation according to claim 2 is rescued force measuring method, it is characterized in that, reserved sensor space is that a shape, the degree of depth adapt with overall dimensions, the coating thickness of described sensor respectively, so that described sensor can embed space therebetween.
7. a kind of seamless appliance with coating thickness compensation according to claim 2 is rescued force measuring method, it is characterized in that, sensor coating thickness comprises the thickness summation of silica gel piece, bio-medical glue and sensor.
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| WO2016139269A1 (en) * | 2015-03-02 | 2016-09-09 | Work for Smile GmbH | Method for determining the need for an orthodontic treatment, and devices |
| WO2016139271A1 (en) * | 2015-03-02 | 2016-09-09 | Work for Smile GmbH | Method for checking or determining the effect of an orthodontic treatment, and orthodontic devices |
| EP3135239A1 (en) * | 2015-08-31 | 2017-03-01 | Ormco Corporation | Orthodontic aligners and devices, methods, systems, and computer programs utilizing same |
| EP3471653A4 (en) * | 2016-06-17 | 2019-12-25 | Align Technology, Inc. | Orthodontic appliance performance monitor |
| CN112823761A (en) * | 2019-11-21 | 2021-05-21 | 西安博恩生物科技有限公司 | Orthodontic appliance forming process based on positive and negative pressure control |
| US11304778B2 (en) | 2016-06-17 | 2022-04-19 | Align Technology, Inc. | Intraoral appliances with proximity and contact sensing |
| US11432908B2 (en) | 2017-12-15 | 2022-09-06 | Align Technology, Inc. | Closed loop adaptive orthodontic treatment methods and apparatuses |
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