WO2001019248A1 - Device and method for establishing stability in an implant or unit - Google Patents
Device and method for establishing stability in an implant or unit Download PDFInfo
- Publication number
- WO2001019248A1 WO2001019248A1 PCT/SE2000/001762 SE0001762W WO0119248A1 WO 2001019248 A1 WO2001019248 A1 WO 2001019248A1 SE 0001762 W SE0001762 W SE 0001762W WO 0119248 A1 WO0119248 A1 WO 0119248A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stability
- implant
- unit
- information
- signal
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4504—Bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0001—Means for transferring electromagnetic energy to implants
Definitions
- the invention relates to a device and method for the measurement of implant stability as a function of, amongst other things, the resonance frequency of the implant, of the implant with an attached structure and/or of a transducer in contact with the implant or a structure that is attached to the implant
- the invention also relates to establish the stability of an anchorage of a first unit It also relates to the preamble of claims 1, 2, 3, 9 and 12 Bone anchored threaded any cylindrical metallic, endosseous implants are now widely used in Medicine and Dentistry Such implants are inserted into a pre-d ⁇ lled hole in the facial skeleton and used to provide a means of anchorage for a dental or facial prosthesis which may be a single replacement tooth, a bridge, a denture or even a false eye or ear Implants may be placed as a one or two stage procedure In a one stage procedure the implant is placed and exposed immediately in, for instance, the patient's mouth A prosthesis may then be con- structed and the implant loaded immediately This method is less popular because immediate loading carries
- Implant stability is the resistance of an implant to movement and reflects its ability to distribute stresses
- the stability of an implant at placement is a function of a number of parameters These relate to the implant itself, its length, diameter, and surface characteristics They also relate to the type of surgical procedure, the size of hole that is drilled and the amount of tissue removed Equally important is the quality of the bone, which may vary from a dense cortical plate in the anterior part of the man- dible to an open trabecular network in the posterior part of the maxilla
- Following implant placement stability changes as a healing and remodelling process takes place within the bone It is likely that there is a degree of stress relaxation following the placement of the implant followed by an inflammatory response with wound healing Following this there will be remodelling until an equilibrium stage is reached
- a suc- cessful, osseointegrated implant shows no decrease in the height of bone surrounding it nor a decrease in stiffness
- the current most commonly used method for assessing implant performance is the use of radiographs, however these are two dimensional in nature and difficult to reproduce It
- a measurement of implant stability is a useful parameter for both the diagnosis of problem implants and the monitoring of implants throughout their lifetime It is generally referred to in WO92/18053, US 5,518,008, US 5,392,779 and US 4 499,906
- the resonance frequency is used as a parameter, but this causes problems when the resonance is used for determing the stability and is affected by another factors than the stability
- F r resonance frequency
- the resonance frequency can have a substantial variation, which means that an instrument that can cover a wide frequency range is necessary In normal situations, the clinically interesting range is smaller than what is actually possible, leading to dif- Acuities in achieving good resolution in that range It is an objective of the invention to solve this problem
- the presented value has to be comparable between implants of different types, different lengths and also between situations with different clinical/surgical conditions (for instance the drill hole diame- ter, the bone quality and the anatomical area)
- a device contains receiving organs which receives the respective frequency signal and transforms it to a digital information signal which is related to and/or is representing the stability and/or, under the above specific circumstances, distinctive features in the implant situation
- Further characteristics are the it works together with organs that contains information which shows or is working with information which represents those distinctive features and that it also contains a calculation unit (for example a microcomputer), or is working together with such a unit which with a software program processes one or more information s ⁇ gnal(-s) with the above information
- the processing with a preferably mainly known program results in a presentation information, which could be trans- ferred to a presentation unit which could be separate or included in the calculation unit and arranged to present the stability independent of the implant type, geometry et cetera It is also referred to the characteristic parts of claims 1
- the invention proposes l a the use of internal memory circuits and/or an external memory unit and/or memory circuits in the transducer
- the memory circuits con- tains in use information about the present implant system, I e the distinctive features of the implant of the patient to be assessed
- the memory contents is used in an arithmetic unit (for example a microcomputer), which can be built in the instrument or be external
- the arithmetic unit uses the information in the memory circuits to compensate the measurement value for differences in the geometry and other factors between different implant systems
- the system of the invention uses knowledge about which is the clinically interesting frequency range, to map F r to a scale with good resolution in that range
- the scale could run from, for instance 0 to 100
- These previous versions have the form of a system or device, which translates Fr to a compensated value, given the abutment, dimensions (if an abutment is used) and information about the implant system used, as input It could also be used to compensate for other clinical parameters, such as the diameter of the drilled hole, the quality of the bone, the anatomical area et cetera, which can be added by the clinician or otherwise communicated to the arithmetic unit
- the mentioned receiving organs contains or co-operates with one or more storage units, internal and/or external, which stores the digital information signal, and/or its presentation, for each respective measurement, such that the s ⁇ gnal(-s) and/or presentat ⁇ on(-s) is/are reusable in order to be run together or compared with other corresponding information signals and/or pres- entations that are received at consecutive interactions, separated in time, between the ⁇ mplant(-s) and one or more vibration effectuating unit It is also referred to the characteristic part of claim 9 According to a yet further aspect of the present invention there is provided a method as claimed in claim 12 of the claims hereinafter
- stability values are stored in the instrument or in external memory circuits, to make it possible to compare measurements made at different occasions, and simplify for the clinician and/or let the arithmetic unit make calculations based upon these comparisons
- a working set-up and method according to the invention may look and work according to the attached drawing, which partly and principally shows a longitudinally sectioned view of an implant in bone, and an instrument, in a block diagram, for measuring implant stability
- An embodiment of the present invention will now be more particularly described by way of example with references to the accompanying drawing, which principally discloses components and signals included and attained in the actual apparatus
- the drawing shows a bone K
- the implant I has been applied in the bone according to known procedures, and can be selected from a range of diameters D and lengths L
- a vibration- or force effectuating and vibration detecting unit (I) is brought in contact with the implant (or an attached structure)
- the umt is connected or possible to connect to an instrument In, through a connection I ed
- the instrument includes a vibration effectuating unit (2), an A/D-converter (3), an arithmetic unit (microcom- puter) (4), one or more memories (5, 6), a presentation umt (7), a memory for storing measurement data (8), and a comparing unit (9)
- a frequency signal ⁇ o is sent from the unit, and a frequency signal ⁇ l5 is achieved from the unit ( 1 ) when it is activated against the implant (or attached structure)
- the unit (3) converts the signal i ⁇ to a digital information signal ⁇ 2
- the unit (4) which can work with a known program, processes the signal ⁇ 2 combimng it with the signal ⁇ 3 which is representative for distortion factors such as differences in diameter and length (D and L), and more The result is a presentation signal ⁇ 4 which relates only to the stability and not to any of the distortion factors
- Fi preferably has values around 5000 Hz (4500-5500 Hz), and F h preferably has values around 10000 Hz (9000-1 1000 Hz)
- sensors are used Each model of sensor is then applied on several calibrating block having a known stability and in which a function is decided by means of a resonance frequency as a function of the stability (defined as ISQ, scaled with 0-100)
- the factors of this function are pro- grammed in a memory applied in the connecting member of the sensor, together with an individual calibrating factor for each sensor (this one is decided on one or more calibrating blocks after the manufacture of the sensor) If the sensor is to be adapted on distance level, the procedure is the same, apart from the fact that the resonance frequency is measured for several different lengths of dis- tances on respective calibrating block. Factors, which compensate for the distance length, are also memorised in the memory of the connection member.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001522890A JP2003524475A (en) | 1999-09-16 | 2000-09-12 | Method and apparatus for establishing implant or unit stability |
EP00963223A EP1280450A1 (en) | 1999-09-16 | 2000-09-12 | Device and method for establishing stability in an implant or unit |
US10/100,392 US20020177790A1 (en) | 1999-09-16 | 2002-03-18 | Device and method for establishingstability in an implant or unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9903304A SE9903304L (en) | 1999-09-16 | 1999-09-16 | Device and method of implants located in bone |
SE9903304-5 | 1999-09-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001019248A1 true WO2001019248A1 (en) | 2001-03-22 |
WO2001019248A8 WO2001019248A8 (en) | 2001-06-14 |
Family
ID=20417005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2000/001762 WO2001019248A1 (en) | 1999-09-16 | 2000-09-12 | Device and method for establishing stability in an implant or unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020177790A1 (en) |
EP (1) | EP1280450A1 (en) |
JP (1) | JP2003524475A (en) |
SE (1) | SE9903304L (en) |
WO (1) | WO2001019248A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004110272A1 (en) * | 2003-06-19 | 2004-12-23 | Integration Diagnostics Ltd | Method and arrangement relating to testing objects |
US7435232B2 (en) | 2003-09-05 | 2008-10-14 | William Marsh Rice University | Noninvasive tissue assessment |
US8391958B2 (en) | 2003-06-19 | 2013-03-05 | Osstell Ab | Method and arrangement relating to testing objects |
US8486070B2 (en) | 2005-08-23 | 2013-07-16 | Smith & Nephew, Inc. | Telemetric orthopaedic implant |
US9492210B2 (en) | 2008-10-15 | 2016-11-15 | Smith & Nephew, Inc. | Composite internal fixators |
US11935649B2 (en) * | 2018-11-07 | 2024-03-19 | W&H Dentalwerk Burmoos Gmbh | Method for web-based data transfer for a dental or dental-surgical treatment or diagnosis system and such a treatment or diagnosis system |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070270684A1 (en) * | 2004-06-21 | 2007-11-22 | Integration Diagnostics Ltd. | Method and Arrangement Relating to Testing Objects |
AU2005304912A1 (en) | 2004-11-04 | 2006-05-18 | Smith & Nephew, Inc. | Cycle and load measurement device |
US9849216B2 (en) | 2006-03-03 | 2017-12-26 | Smith & Nephew, Inc. | Systems and methods for delivering a medicament |
EP2114247B1 (en) | 2007-02-23 | 2013-10-30 | Smith & Nephew, Inc. | Processing sensed accelerometer data for determination of bone healing |
US8915866B2 (en) | 2008-01-18 | 2014-12-23 | Warsaw Orthopedic, Inc. | Implantable sensor and associated methods |
KR100992994B1 (en) | 2009-01-08 | 2010-11-09 | 연세대학교 산학협력단 | Dental operating device |
US8685093B2 (en) | 2009-01-23 | 2014-04-01 | Warsaw Orthopedic, Inc. | Methods and systems for diagnosing, treating, or tracking spinal disorders |
US8126736B2 (en) | 2009-01-23 | 2012-02-28 | Warsaw Orthopedic, Inc. | Methods and systems for diagnosing, treating, or tracking spinal disorders |
EP3510940B1 (en) | 2010-06-19 | 2020-10-07 | Perimetrics, LLC | System and method for determining structural characteristics of an object |
US9869606B2 (en) | 2011-06-18 | 2018-01-16 | Perimetrics, Llc | System and method for determining structural characteristics of an object |
TWI546060B (en) | 2013-12-02 | 2016-08-21 | 國立中央大學 | System, apparatus and method for detecting bone defects |
JP2017144061A (en) * | 2016-02-17 | 2017-08-24 | 学校法人慶應義塾 | Method for evaluating installation strength of orthopedic implant, orthopedic implant, and orthopedic jig |
KR101778064B1 (en) | 2016-06-21 | 2017-09-26 | 연세대학교 원주산학협력단 | Apparatus for measure osseointegration of implant |
GB2554456A (en) * | 2016-09-29 | 2018-04-04 | Osstell Ab | A probe |
WO2018126244A1 (en) * | 2016-12-30 | 2018-07-05 | Perimetrics, Llc | System and method for determining structural characteristics of an object |
JP7281770B2 (en) | 2017-09-14 | 2023-05-26 | 慶應義塾 | IMPLANT INSTALLATION STRENGTH EVALUATION METHOD, IMPLANT INSTALLATION STRENGTH EVALUATION DEVICE, AND PROGRAM |
JPWO2021201240A1 (en) * | 2020-04-02 | 2021-10-07 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499906A (en) * | 1982-04-26 | 1985-02-19 | Siemens Aktiengesellschaft | Percussion instrument |
US4926143A (en) * | 1988-05-27 | 1990-05-15 | Yokogawa Electric Corporation | Oscillator using H-shaped single crystal silicon vibrator |
US5392779A (en) * | 1991-04-11 | 1995-02-28 | Imperial College Of Science, Technology & Medicine | Testing implants |
US5518008A (en) * | 1994-08-25 | 1996-05-21 | Spectral Sciences Research Corporation | Structural analyzer, in particular for medical implants |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5024239A (en) * | 1988-12-21 | 1991-06-18 | Rosenstein Alexander D | Method and apparatus for determining osseous implant fixation integrity |
-
1999
- 1999-09-16 SE SE9903304A patent/SE9903304L/en not_active Application Discontinuation
-
2000
- 2000-09-12 EP EP00963223A patent/EP1280450A1/en not_active Withdrawn
- 2000-09-12 JP JP2001522890A patent/JP2003524475A/en active Pending
- 2000-09-12 WO PCT/SE2000/001762 patent/WO2001019248A1/en not_active Application Discontinuation
-
2002
- 2002-03-18 US US10/100,392 patent/US20020177790A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4499906A (en) * | 1982-04-26 | 1985-02-19 | Siemens Aktiengesellschaft | Percussion instrument |
US4926143A (en) * | 1988-05-27 | 1990-05-15 | Yokogawa Electric Corporation | Oscillator using H-shaped single crystal silicon vibrator |
US5392779A (en) * | 1991-04-11 | 1995-02-28 | Imperial College Of Science, Technology & Medicine | Testing implants |
US5518008A (en) * | 1994-08-25 | 1996-05-21 | Spectral Sciences Research Corporation | Structural analyzer, in particular for medical implants |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004110272A1 (en) * | 2003-06-19 | 2004-12-23 | Integration Diagnostics Ltd | Method and arrangement relating to testing objects |
JP2006527627A (en) * | 2003-06-19 | 2006-12-07 | インテグレイシヨン・ダイアグノステイツクス・リミテツド | Method and apparatus for testing an object |
JP4806348B2 (en) * | 2003-06-19 | 2011-11-02 | インテグレイシヨン・ダイアグノステイツクス・リミテツド | Method and apparatus for testing an object |
US8391958B2 (en) | 2003-06-19 | 2013-03-05 | Osstell Ab | Method and arrangement relating to testing objects |
US8979532B2 (en) | 2003-06-19 | 2015-03-17 | Osstell Ab | Dental attachment quality testing device |
US7435232B2 (en) | 2003-09-05 | 2008-10-14 | William Marsh Rice University | Noninvasive tissue assessment |
US8486070B2 (en) | 2005-08-23 | 2013-07-16 | Smith & Nephew, Inc. | Telemetric orthopaedic implant |
US9492210B2 (en) | 2008-10-15 | 2016-11-15 | Smith & Nephew, Inc. | Composite internal fixators |
US10357292B2 (en) | 2008-10-15 | 2019-07-23 | Smith & Nephew, Inc. | Composite internal fixators |
US11096726B2 (en) | 2008-10-15 | 2021-08-24 | Smith & Nephew, Inc. | Composite internal fixators |
US11935649B2 (en) * | 2018-11-07 | 2024-03-19 | W&H Dentalwerk Burmoos Gmbh | Method for web-based data transfer for a dental or dental-surgical treatment or diagnosis system and such a treatment or diagnosis system |
Also Published As
Publication number | Publication date |
---|---|
US20020177790A1 (en) | 2002-11-28 |
JP2003524475A (en) | 2003-08-19 |
SE9903304D0 (en) | 1999-09-16 |
WO2001019248A8 (en) | 2001-06-14 |
EP1280450A1 (en) | 2003-02-05 |
SE9903304L (en) | 2001-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1280450A1 (en) | Device and method for establishing stability in an implant or unit | |
US7775985B2 (en) | Method for analysing pressure signals derivable from a body cavity | |
Meredith et al. | Quantitative determination of the stability of the implant‐tissue interface using resonance frequency analysis | |
Meredith | Assessment of implant stability as a prognostic determinant. | |
Winter et al. | Parameters of implant stability measurements based on resonance frequency and damping capacity: a comparative finite element analysis. | |
Chavez et al. | Assessment of oral implant mobility | |
EP1387635B1 (en) | Non invasive measurement of blood pressure | |
US20020143268A1 (en) | Bone implant testing | |
Dario et al. | Electronic monitoring of dental implant osseointegration | |
Rokn et al. | Evaluation of stability changes in tapered and parallel wall implants: a human clinical trial | |
Winkler et al. | Stability of implants and natural teeth as determined by the Periotest over 60 months of function | |
Law et al. | Mandibular flexure and its significance on implant fixed prostheses: a review | |
EP0702942A1 (en) | Apparatus for measuring tooth mobility | |
Clelland et al. | Comparison of strains transferred to a bone simulant among implant overdenture bars with various levels of misfit | |
Li et al. | Finite element based bone remodeling and resonance frequency analysis for osseointegration assessment of dental implants | |
Ramp et al. | Dynamic behavior of implants as a measure of osseointegration. | |
Drago | A prospective study to assess osseointegration of dental endosseous implants with the Periotest instrument. | |
Veltri et al. | Soft bone primary stability of 3 different miniscrews for orthodontic anchorage: a resonance frequency investigation | |
Feng et al. | Influence of simulated bone quality and cortical bone thickness on implant stability detection using resonance frequency and damping factor analysis. | |
US20060229534A1 (en) | System and method for measuring coefficient variance of resonance frequency of musculoskeletal system | |
JPH1147095A (en) | Electronic medical treatment assisting apparatus | |
de Vasconcellos et al. | A microstrain comparison of passively fitting screw-retained and cemented titanium frameworks | |
Grognard et al. | Updated secondary implant stability data of two dental implant systems. A retrospective cohort study | |
Alberts et al. | A biologic model for assessment of osseous strain patterns and plating systems in the human maxilla | |
Shah et al. | Fracture stiffness measurement in tibial shaft fractures: a non-invasive method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
AK | Designated states |
Kind code of ref document: C1 Designated state(s): CA JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: C1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WR | Later publication of a revised version of an international search report | ||
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2001 522890 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2000963223 Country of ref document: EP |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWP | Wipo information: published in national office |
Ref document number: 2000963223 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2000963223 Country of ref document: EP |