US20230389825A1 - Method for recording a mandibular kinematics of an individual - Google Patents
Method for recording a mandibular kinematics of an individual Download PDFInfo
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- US20230389825A1 US20230389825A1 US18/451,958 US202318451958A US2023389825A1 US 20230389825 A1 US20230389825 A1 US 20230389825A1 US 202318451958 A US202318451958 A US 202318451958A US 2023389825 A1 US2023389825 A1 US 2023389825A1
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- marker
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- attachment device
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- 230000004807 localization Effects 0.000 description 12
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- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
- A61B5/1127—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique using markers
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Abstract
A method for recording a mandibular kinematics of an individual comprises:
-
- attaching a first marker comprising a plurality of reflective patches or beads to an attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the attachment device comprises:
- an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the mandibular arch,
- an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the first marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
- a connecting portion connecting the intra-oral portion and the extra-oral portion,
- attaching a second marker provided with a plurality of reflective patches or beads to a forehead of the individual, and
- recording relative displacements of said first and second markers during mandibular movements made by the individual with the infrared camera.
- attaching a first marker comprising a plurality of reflective patches or beads to an attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the attachment device comprises:
Description
- The present invention relates to a device for mandibular attachment of a localization marker, notably intended to be used for recording the mandibular kinematics of an individual.
- The document WO 2013/030511 describes a method for designing a dental apparatus for an individual in which the mandibular kinematics recorded on said individual are used to animate digital models of the upper and lower dental arches of the individual.
- To do so, it is firstly necessary to calibrate the digital models of the arches to the planes and reference points of the individual.
- Next, the mandibular kinematics of the individual are recorded. To this end, the individual is equipped with several markers:
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- one or more markers are positioned at the level of the forehead of the individual, through a support encircling the forehead,
- one or more markers are positioned at the level of the lower jaw (mandible) and rigidly attached to the teeth of the lower arch.
- A camera suitable for detecting said markers is oriented towards the face of the patient and records the displacements of the markers during movements of the mandible.
- The mandibular markers may be attached directly onto the teeth of the lower arch, but this requires the use of a device for moving apart the lips to make them visible by the camera.
- Another solution is to attach the marker to an intermediate support which is itself attached to the mandible. Said intermediate support must be attached in a rigid manner to the mandible, because any relative displacement with respect to the mandible during the acquisition of the mandibular kinematics would deteriorate the precision of the recording. In addition, the wearing of this intermediate support must be comfortable for the individual.
- The marker is preferably supplied separately from the support, to enable firstly putting in place the support alone in the mouth of the patient, then, once the support is attached on the mandible, the marker is mounted on the support. However, if the force for putting in place the marker on the support is too high, the support may be displaced with respect to the mandible.
- An aim of the invention is thus to design a support for a mandibular localization marker that enables a rigid attachment of the marker with respect the individual, with a system for attaching the marker that minimises the force of mounting the marker on the support.
- To this end, the invention proposes a device for attaching a localization marker to the lower jaw of an individual, said marker comprising an inner face provided with two attachment lugs, comprising:
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- an intra-oral portion having a general U-shape suitable for coming into contact with the outer face of the teeth of the lower jaw,
- an extra-oral portion comprising an element for attaching the marker,
- a connecting portion connecting the intra-oral portion and the extra-oral portion,
- characterised in that the attachment element comprises two recesses each suitable for receiving a respective lug of the marker, said recesses being separated by a tab suitable for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug.
- According to an embodiment, the attachment element further comprises two lateral fins suitable for being deformed elastically when each lug is engaged in a respective recess so as to exert a pressure force on the inner face of the marker.
- In a particularly advantageous manner, the intra-oral portion is flexible in the plane of the U.
- According to a preferred embodiment, the face of the intra-oral portion oriented towards the teeth has a rough surface.
- In an advantageous manner, the face of the intra-oral portion oriented towards the teeth comprises at least one notch suitable for engaging in a relief of the teeth of the lower jaw.
- Preferably, the intra-oral portion is provided at its ends with divisible segments.
- According to an embodiment, the attachment element comprises means for guiding and/or abutting the marker.
- In a preferred manner, the attachment element is configured to enable dismantling of the marker.
- In an advantageous manner, the connecting portion is designed so that, when the device is in place in the mouth of the individual, a section of said connecting portion extends substantially in the plane of the closing of the lips.
- According to an embodiment, the intra-oral portion, the extra-oral portion and the connecting portion are integrally formed.
- The intra-oral portion, the extra-oral portion and the connecting portion are advantageously constituted of a biocompatible material.
- The invention also relates to a localization device comprising an attachment device such as described above and a marker comprising an inner face provided with two attachment lugs, said marker being attached to the extra-oral portion by engagement of each lug in a respective recess, the tab exerting a pressure force on one of the lugs.
- According to an embodiment, the marker comprises a plurality of reflective patches.
- The invention also relates to a localization system comprising an infrared camera and an assembly formed of the attachment device and the marker such as described previously.
- Finally, the invention relates to a method for recording the mandibular kinematics of an individual by means of the localization system such as described previously, in which the marker is attached on the teeth of the mandibular arch of the individual through the attachment device, another marker provided with a plurality of reflective patches is attached on the forehead of the individual, and the relative displacements of said markers during mandibular movements made by the individual are recorded with the infrared camera.
- To attach the marker on the attachment device, the inner face of the marker provided with two attachment lugs is presented facing the extra-oral portion of the device, a first lug is engaged in a first recess then a second lug in a second recess while elastically deforming the tab such that said tab exerts a pressure force on the second lug.
- Other characteristics and advantages of the invention will become clear from the detailed description that follows, with reference to the appended drawings in which:
-
FIG. 1 is a perspective view of the mandibular attachment device equipped with a localization marker, -
FIG. 2 is a perspective view of the mandibular attachment device ofFIG. 1 in the absence of the localization marker, -
FIG. 3 is a front view of the mandibular attachment device ofFIG. 2 , -
FIG. 4 is a side view of the mandibular attachment device ofFIG. 2 , -
FIG. 5 is a top view of the mandibular attachment device ofFIG. 2 , -
FIG. 6 is a side view of the mandibular marker. -
FIG. 1 is a perspective view of amarker 2 mounted on amandibular attachment device 1 according to the invention. - The localization technology of the marker is not limiting.
- In the example illustrated on
FIG. 1 , the marker comprises fourreflective patches 20, the size and the relative position of which are known, detectable by an infrared camera. The shape of the patches is not limiting. Thus, said patches could be replaced by reflective elements having any other appropriate shape, for example beads. - In an alternative manner, the reflective patches could be replaced by a chart formed of a two-coloured pattern of known geometry.
- According to other embodiments, the reflective patches could be replaced by diodes, electromagnetic coils, or any other appropriate localization means, such as IMUs (inertial measurement units), accelerometers, gyroscopes, etc.
- As illustrated in
FIG. 1 , thedevice 1 comprises: -
- an
intra-oral portion 10 intended to be maintained against the outer face of the teeth of the lower jaw (not represented), - an extra-oral portion 12 (more clearly visible in
FIGS. 2 to 5 ) comprising an attachment element for themarker 2, - a connecting
portion 11 making it possible to connect theintra-oral portion 10 to theextra-oral portion 12.
- an
- In a particularly advantageous manner, the whole of the three
parts - For example, this material may be polyamide, polypropylene, PEEK (non-exhaustive list).
- The
device 1 is typically single-use and may thus be discarded after use. - With a view to its use, and depending on potential regulatory requirements, the mandibular attachment device may be supplied sterilised in a sealed envelope protecting it from any external contamination.
-
FIGS. 2 to 5 illustrate views of the mandibular attachment device without the marker. - The
intra-oral portion 10 has a general U-shape. - The material and the thickness of the intra-oral portion are chosen to have a certain flexibility in a direction of moving apart or coming closer of the legs of the U in their plane.
- Thus, the two
legs 100 may be moved apart with respect to their initial position to be inserted in the mouth of the individual without rubbing against the teeth or the gums, then released once they have been correctly positioned. - At rest, that is to say before insertion in the mouth of the individual, the width L of the intra-oral portion is defined as being the maximum distance between the two legs of the U.
- Preferably, the width of the intra-oral portion at rest is slightly less than the average width of the jaw of the individual (defined as being the distance between the outer surfaces of the molars of the lower jaw), such that once inserted into the mouth of the patient, the elasticity of the
legs 100 exerts a slight compressive force on the teeth, in order to ensure the intra-oral portion is maintained correctly. - According to an optional but advantageous embodiment, the end of the legs of the U is made divisible by the presence of one or
more notches 101 which define one or moredetachable segments 102. Thus, one or more of said detachable segments may be removed until a length of thelegs 100 is obtained adapted to the length of the jaw of the individual. The length of said segments 102 (distance between two adjacent notches 101) is typically of the order of 5 to 10 mm. Thenotches 101 may extend from the lower face or the upper face of thelegs 100; they may also extend from two faces opposite each other, as is the case inFIGS. 1 to 5 . The depth of the notches 101 (or the sum of the depths in the case of opposite notches) is typically of the order of half of the height h of each leg. - In an advantageous manner, the mechanical strength of the
intra-oral portion 10 on the jaw of the patient is ensured at least in part by a biocompatible adhesive (not represented) deposited between the surface of the teeth and the inner face of the intra-oral portion. Such a biocompatible adhesive is frequently used in the dentistry field. - Furthermore, the
inner face 103 of the intra-oral portion, that is to say the face intended to come into contact with the teeth, may have a certain roughness. For example, a part made by 3D printing (using the so called SLS (selective laser sintering) technique) has an appropriate roughness. In the case of a part made by moulding, the injection mould may undergo a treatment, for example a sanding or a chemical etching, conferring on it a non-smooth surface state. This roughness makes it possible to improve the mechanical strength of the adhesive vis-a-vis theinner face 103. - On the other hand, the
inner face 103 of the intra-oral portion may be provided withnotches 104. Said notches are arranged in such a way as to be located facing parts in relief on the outer surface of the teeth when the device is in place in the mouth of the individual. Thenotches 104 thus fulfil a function of blocking the intra-oral portion, notably in the antero-posterior direction, which stabilise the device in the mouth. - In a particularly advantageous manner, the height h of the intra-oral portion is chosen sufficiently low (typically less than the average height of the teeth) in order not to go beyond the plane formed by the upper surface of the teeth of the lower jaw when the device is in place in the mouth of the individual. For example, the height h is of the order to 5 mm.
- Thus, the intra-oral portion does not interfere with the mandibular kinematics (clenching of the teeth, chewing movements and others).
- The
extra-oral portion 12 has for its part anattachment element 120 for a marker. - In the example illustrated in the appended figures, the
marker 2 is attached by snap coupling on theextra-oral portion 12. To this end, as illustrated inFIG. 6 , themandibular marker 2 comprises, on its inner face (i.e. opposite to the reflective patches), twolugs attachment element 120 comprises tworecesses elastic tab 123. To put in place themarker 2 on theattachment device 1, theupper lug 21 is firstly engaged in therecess 121, then the lower lug is engaged in therecess 122, this engagement causing a slight deformation of thetab 123 rearwards (that is to say on the side opposite the reflective patches). The marker is thus maintained on theextra-oral portion 12 by engagement of thelugs recesses deformed tab 123. - The assembly of the
marker 2 on the attachment device is advantageously carried out once the attachment device has been put in place in the mouth of the patient and attached using the aforesaid biocompatible adhesive. Thus, the marker does not hinder this putting in place operation. - Thanks to the attachment mechanism described above, the marker can be manipulated with a single hand by the practitioner to be put in place on the extra-oral portion of the device.
- Furthermore, the force required to put in place the marker on the extra-oral portion is very low, such that it does not affect the mechanical strength of the attachment device vis-a-vis the mandible.
- In a particularly advantageous manner, the
attachment element 120 further comprises two lateralelastic fins 124, which are deformed during the putting in place of the mandibular marker on theextra-oral portion 12. Said fins then exert a pressure force on the inner face of the marker, which further stabilises its attachment. - It will be noted that the putting in place of the marker is particularly facilitated when the lugs and recesses are arranged one above the other in the use position of the device, because the upper recess is easily accessible to the practitioner. However, a similar architecture with an alignment of the recesses and the tab in a horizontal plane, or according to any inclination, could also be implemented without however going beyond the scope of the present invention. For example, the extra-oral portion could comprise a right recess and a left recess aligned in a horizontal plane and, for the assembly, the marker should be presented in front of the extra-oral portion with the lugs aligned along a horizontal plane, in order to enable the engagement of the lugs in the recesses and the deformation of the tab in a horizontal plane.
- The extra-oral portion is designed to be sufficiently rigid to support the weight of said marker without being deformed.
- Preferably, the mode for attaching the
marker 2 on theextra-oral portion 12 is chosen so as not to require any tool. For example, the extra-oral portion may have an element enabling the snap connection of the marker, a quarter turn type attachment, or even a magnetic force, etc. In the latter case, the extra-oral portion and the marker are respectively provided with a magnet and/or an element made of ferrous material intended to cooperate with the magnet. - In a particularly advantageous manner, the marker can be detached from the attachment device.
- According to an embodiment, the attachment for the marker is moreover reproducible, that is to say that each time that the marker is put in place on the device, the position of the marker with respect to the device is identical.
- To this end, the
attachment element 120 provided on theextra-oral portion 12 comprises means for guiding and/or abutting the marker. - According to a less preferred embodiment, the marker could form an integral part of the extra-oral portion.
- When the
device 1 is in place in the mouth of the individual, theextra-oral portion 12 is advantageously situated below the plane of the lips of the individual (themarker 20 being able for its part to go beyond this plane). - For reasons of stability of the device, said device is substantially symmetrical with respect to the antero-posterior plane of the individual.
- The connecting
portion 11 between the intra-oral 10 and extra-oral 12 portions is like a bridge clamp extending from the central region of theintra-oral portion 10. This bridge clamp has afirst section 110 extending towards the upper jaw, asecond section 111 extending through the lips and athird section 112 for connecting to theextra-oral portion 12. - The shape and the dimensions of the connecting portion are chosen so that, when the device is in place in the mouth of the individual, the
second section 111 extends to the level of the plane of the lips, without exerting pressure on the lips. Thedevice 1 remains immobile even in the event of swallowing. - Furthermore, the connecting
portion 11 is designed to be sufficiently rigid so as not to deform when themarker 20 is attached to theextra-oral portion 12. - The
device 1 and themarker 2 form part of a localization system in which they are associated with a camera, notably an infrared camera in the case of a marker provided with reflective patches. - To record the mandibular kinematics of an individual, the intra-oral portion is attached in contact with the teeth of the lower arch of the individual, then the marker is attached to the extra-oral portion.
- The individual is also equipped with a forehead support also bearing a localization marker according to the same technology as the mandibular marker. Optionally, it is possible to do without such a forehead support by equipping the upper jaw with an attachment device similar to that which has just been described, with shapes and dimensions adapted to this jaw.
- The putting in place of these markers on the individual is naturally carried out in a non-invasive manner.
- The camera is placed opposite the patient, such that the forehead marker and the mandibular marker are permanently within his field of vision.
- The individual then carries out a certain number of mandibular movements (chewing, etc.) according to the recommendations of the practitioner.
- The camera detects and records the relative displacements of the markers.
- After the acquisition, this recording is applied to digital models of the dental arches of the individual, which makes it possible to animate them.
Claims (22)
1. A method for recording a mandibular kinematics of an individual, comprising:
attaching a first marker comprising a plurality of reflective patches or beads to an attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the mandibular arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the first marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion,
attaching a second marker provided with a plurality of reflective patches or beads to a forehead of the individual, and
recording relative displacements of said first and second markers during mandibular movements made by the individual with the infrared camera.
2. The method of claim 1 , wherein attaching the first marker on the attachment device comprises:
presenting the inner face of the marker provided with the two attachment lugs facing the extra-oral portion of the attachment device, and
engaging a first lug in a first recess then a second lug in a second recess while elastically deforming the tab such that said tab exerts a pressure force on the second lug.
3. The method of claim 2 , wherein the extra-oral portion further comprises two lateral fins and wherein attaching the first marker on the attachment device comprises deforming elastically each lateral fin when each lug is engaged in a respective recess so as to exert a pressure force on the inner face of the marker.
4. The method of claim 1 , wherein a face of the intra-oral portion oriented towards the teeth comprises at least one notch engaging in a relief of the teeth of the mandibular ach.
5. The method of claim 1 , wherein the intra-oral portion does not extend beyond a plane formed by an upper surface of the teeth of the mandibular arch.
6. The method of claim 1 , wherein the extra-oral portion is situated below a plane of the individual's lips.
7. The method of claim 1 , wherein the intra-oral portion comprises two ends with divisible segments, the method further comprising cutting at least one divisible segment to adjust a size of the intra-oral portion to a size of the mandibular arch.
8. The method of claim 1 , wherein the first marker is releasably attached to the attachment device.
9. A method for recording a mandibular kinematics of an individual, comprising:
attaching a first marker comprising a plurality of reflective patches or beads to a first attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the first attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the mandibular arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the first marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion,
attaching a second marker comprising a plurality of reflective patches or beads to a second attachment device fixed to a maxillar arch of the individual, wherein the second marker comprises an inner face provided with two attachment lugs and the second attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the maxillar arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the second marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion,
recording relative displacements of said first and second markers during mandibular movements made by the individual with the infrared camera.
10. The method of claim 9 , wherein attaching the first or second marker on the first or second attachment device comprises:
presenting the inner face of the first or second marker provided with the two attachment lugs facing the extra-oral portion of the respective first or second attachment device, and
engaging a first lug in a first recess then a second lug in a second recess while elastically deforming the tab such that said tab exerts a pressure force on the second lug.
11. The method of claim 10 , wherein the extra-oral portion of the first or second attachment device further comprises two lateral fins and wherein attaching the first or second marker on the first or second attachment device comprises deforming elastically each lateral fin when each lug is engaged in a respective recess so as to exert a pressure force on the inner face of the first or second marker.
12. The method of claim 9 , wherein the intra-oral portion of the first or second attachment device comprises two ends with divisible segments, the method further comprising cutting at least one divisible segment to adjust a size of the intra-oral portion to a size of the mandibular or maxillar arch.
13. The method of claim 9 , wherein at least one of the first and the second marker is releasably attached to the respective first or second attachment device.
14. A method for recording a mandibular kinematics of an individual, comprising:
attaching a first marker to an attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the mandibular arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the first marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion, attaching a second marker to a forehead of the individual,
wherein the first and second markers each comprise at least one of: a chart formed of a two-coloured pattern of known geometry, a diode, an electromagnetic coil, an inertial measurement unit, an accelerometer and a gyroscope, and
recording relative displacements of said first and second markers during mandibular movements made by the individual.
15. The method of claim 14 , wherein attaching the first marker on the attachment device comprises:
presenting the inner face of the marker provided with the two attachment lugs facing the extra-oral portion of the attachment device, and
engaging a first lug in a first recess then a second lug in a second recess while elastically deforming the tab such that said tab exerts a pressure force on the second lug.
16. The method of claim 15 , wherein the extra-oral portion further comprises two lateral fins and wherein attaching the first marker on the attachment device comprises deforming elastically each lateral fin when each lug is engaged in a respective recess so as to exert a pressure force on the inner face of the marker.
17. The method of claim 14 , wherein a face of the intra-oral portion oriented towards the teeth comprises at least one notch engaging in a relief of the teeth of the mandibular ach.
18. The method of claim 14 , wherein the intra-oral portion does not extend beyond a plane formed by an upper surface of the teeth of the mandibular arch.
19. The method of claim 14 , wherein the extra-oral portion is situated below a plane of the individual's lips.
20. The method of claim 14 , wherein the intra-oral portion comprises two ends with divisible segments, the method further comprising cutting at least one divisible segment to adjust a size of the intra-oral portion to a size of the mandibular arch.
21. The method of claim 14 , wherein the first marker is releasably attached to the attachment device.
22. A method for recording a mandibular kinematics of an individual, comprising:
attaching a first marker to a first attachment device fixed to a mandibular arch of the individual, wherein the first marker comprises an inner face provided with two attachment lugs and the first attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the mandibular arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the first marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion,
attaching a second marker to a second attachment device fixed to a maxillar arch of the individual, wherein the second marker comprises an inner face provided with two attachment lugs and the second attachment device comprises:
an intra-oral portion having a general U shape coming into contact with an outer face of teeth of the maxillar arch,
an extra-oral portion comprising two recesses each adapted for receiving a respective lug of the second marker, said recesses being separated by a tab adapted for being elastically deformed when one of the lugs is engaged in a respective recess so as to exert a pressure force on said lug, and
a connecting portion connecting the intra-oral portion and the extra-oral portion,
wherein the first and second markers each comprise at least one of: a chart formed of a two-coloured pattern of known geometry, a diode, an electromagnetic coil, an inertial measurement unit, an accelerometer and a gyroscope,
recording relative displacements of said first and second markers during mandibular movements made by the individual.
Priority Applications (1)
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US18/451,958 US20230389825A1 (en) | 2017-03-03 | 2023-08-18 | Method for recording a mandibular kinematics of an individual |
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FR1751748A FR3063427B1 (en) | 2017-03-03 | 2017-03-03 | DEVICE FOR MANDIBULAR FIXATION OF A LOCALIZATION MARKER |
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PCT/FR2018/050498 WO2018158551A1 (en) | 2017-03-03 | 2018-03-05 | Device for mandibular attachment of a location marker |
US201916490412A | 2019-08-30 | 2019-08-30 | |
US18/451,958 US20230389825A1 (en) | 2017-03-03 | 2023-08-18 | Method for recording a mandibular kinematics of an individual |
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US20220184824A1 (en) * | 2020-12-11 | 2022-06-16 | Depuy Ireland Unlimited Company | High accuracy molded navigation arrays, systems, and methods |
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US4432728A (en) * | 1978-08-07 | 1984-02-21 | Skarky Floyd E | Dental tray |
US6217334B1 (en) * | 1997-01-28 | 2001-04-17 | Iris Development Corporation | Dental scanning method and apparatus |
US20050106529A1 (en) * | 2003-11-19 | 2005-05-19 | Align Technology, Inc. | Dental impression tray with detachable portions |
US20060201520A1 (en) * | 2005-03-10 | 2006-09-14 | Christensen Robert W Iii | Multifunctional mouthpiece system |
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CN102389335B (en) * | 2011-07-21 | 2015-02-11 | 中国医学科学院整形外科医院 | Digital jaw surgical guide plate and manufacturing method thereof |
FR2979226B1 (en) | 2011-08-31 | 2014-11-21 | Maxime Jaisson | METHOD FOR DESIGNING A DENTAL APPARATUS |
CN103202729B (en) * | 2012-01-16 | 2016-08-10 | 王旭东 | A kind of individuation upper jaw bone osteotomy and relocate the manufacture method of guide entity |
WO2014004730A2 (en) * | 2012-06-26 | 2014-01-03 | Loma Linda University | Device, system and methods for determining and measuring temporomandibular joint positions and movements |
US10265090B2 (en) * | 2013-01-16 | 2019-04-23 | Covidien Lp | Hand held electromechanical surgical system including battery compartment diagnostic display |
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