CN101912267B - Mandible movement track recording system - Google Patents
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- CN101912267B CN101912267B CN2010102630407A CN201010263040A CN101912267B CN 101912267 B CN101912267 B CN 101912267B CN 2010102630407 A CN2010102630407 A CN 2010102630407A CN 201010263040 A CN201010263040 A CN 201010263040A CN 101912267 B CN101912267 B CN 101912267B
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Abstract
The invention discloses a mandible movement track recording method, including the following steps: a, the rear end of a test marking rod is fixed at the mandible incisor part of a tester, the front end of the test marking rod is connected with a marker exposing port and moves along with the mandible; b, the movement track of the marker at the front end of the test marking rod is recorded by virtue of at least two infrared cameras provided with an infrared launching device, and movement track data is transmitted to a computer host to be analyzed and processed; c, the movement track of the marker is reconstructed in the computer, so as to correspondingly reflect three-dimensional track of mandible movement of the tester, and the recorded mandible movement three-dimensional track and calculated relevant parameters are respectively compared with mandible standard movement track and standard parameters which are stored by the system, so as to judge whether mandible movement and occlusion of upper and lower dentitions are normal or not. Besides, the invention also discloses a mandible movement track recording system.
Description
Technical field
The present invention relates to a kind of medical inspection device, relate in particular to a kind of Mandible movement track recording system and method.
Background technology
The human body mandibular movement is the three-dimensional motion by a kind of complicacy of tooth, masticatory muscles and TMJ fellowship; The health status of its motor pattern and stomatognathic system is closely related; Feature analysis that can be through mandibular movement and understanding is chewed, swallowed and function such as language; Perform an analysis diagnosis and curative effect of TMJ pathological changes judged; Also can also need design and produce dummy according to rule design
frame of mandibular movement according to the personal feature of mandibular movement.
The recording means of mandibular movement track is to explore the mandibular movement rule through obduction at first; Nineteen twenty-one; B.McCollum has developed a kind of mechanical mandibular kinesiograph, through the motion of clamping plate, facebow and recording stylus plate record lower jaw, although the motion facebow of using has at present been done many improvement; Still too loaded down with trivial details and complicated, be unfavorable for promoting.Jankelson in 1975 etc. have invented the mandibular movement instrument system; This system is a kind of recording instrument of magnetoelectricity amount conversion regime; Can observe infradentale point of contact movement locus from sagittal plane, coronalplane and horizontal plane, but receive extraneous little magnetic field or electromagnetic field environmental interference easily; The eighties in 20th century, the condyle movement track recording instrument that U.S. Grbh company succeeds in developing is traced the condyle movement track of classics with computer and is combined, and can also carry out qualitative, quantitative research through analysis software; In recent years, German KaVo company has researched and developed ARCUS digma mandibular movement track record appearance, and lower jaw masticatory movement track can measured and show to this equipment is integrated ultrasonic sensor technology and computer technology.But these apparatus structure complicacies are expensive not only, and inconvenient operation, and input cost is too high on links such as plant maintenance, material consumption.
Summary of the invention
The objective of the invention is to: a kind of Mandible movement track recording system is provided, this system's low cost of manufacture, more convenient operation, test accuracy height are effective.
To achieve these goals; The invention provides a kind of mandibular movement track record analytical system; It comprises test badge bar, at least two infrared cameras and is used to analyze the host computer of shooting record data, and the test badge rod rear end is fixed on tester's lower jaw incisor position, and test badge bar front end connects a label and exposes mouthful outer along with lower jaw moves together; Reflection mandibular movement track; The movement locus of infrared camera record test badge bar front end label sends motion trace data to the host computer analyzing and processing, judges whether mandibular movement and upper and lower dentition interlock be normal.
Further, the position bending that said test badge pole pair should be gone up incisor is spill, is used for the interlock that correspondence is dodged incisor, does not influence said test badge bar along with lower jaw moves together.
Further, said test badge rod rear end is fixed on lower jaw incisor position by steel wire or plastics silk through diastema; Perhaps said test badge rod rear end is fixed on lower jaw incisor position through magnetic devices; Perhaps said test badge rod rear end is fixed on lower jaw incisor table position through the press mold mode.
Further, the label of said test badge bar front end can move along with lower jaw for the surperficial little ball that scribbles reflectorized material together, reflection mandibular movement track.
Further; The support of said two infrared cameras through adjustable height and angle is fixed on around tester's face; One of them infrared camera is put in the facial dead ahead of tester, and the label that writes down said test badge bar front end is at frontal plane, i.e. movement locus on the coronalplane; Another infrared camera is put in tester's side, writes down the movement locus of label on sagittal plane of said test badge bar front end.
The present invention also provides a kind of mandibular movement track recording method, and it may further comprise the steps:
A, the test badge rod rear end is fixed on lower jaw incisor position, test badge bar front end connects a label and exposes mouthful outer and move with lower jaw;
The movement locus of b, the infrared camera record test badge bar front end label through at least 2 band infrared launchers send motion trace data to the host computer analyzing and processing;
C, through in computer, rebuilding the movement locus of said label; Correspondence has reflected the three-dimensional track of tester's mandibular movement; The mandibular movement three-dimensional track of record is made comparisons with lower jaw standard movement track and canonical parameter that system stores respectively with the relevant parameter that calculates, judge whether mandibular movement and upper and lower dentition interlock be normal.
Further, said test badge rod rear end is fixed on lower jaw incisor position by steel wire or plastics silk through diastema; Perhaps said test badge rod rear end is fixed on lower jaw incisor position through magnetic devices; Perhaps said test badge rod rear end is fixed on lower jaw incisor position through the press mold mode.
Further, also comprise step a1 after the step a: infrared camera is proofreaied and correct, adjusted said infrared camera parameter, be used to strengthen the accuracy of the said test badge bar front end label movement locus of record.
Further; Step b specifically comprises: when carrying out jaw position and
stability test; From the stationary position position opening entry that the tester remains silent; Dehisce to maximum position, the supreme incisor of the mandibular protraction of remaining silent is then got back to the stationary position position of remaining silent to lower incisor, and system synchronization shows its movement locus and shift value; Repeat this motion at least 2 times, data are passed to said host computer analyzing and processing;
When movement rate that opens and closes mouthful track and smoothness test; From tester's intercuspal position opening entry, open and close mouth 1 time naturally earlier, open and close mouth then 1 time greatly and soon; Data are passed to said host computer analyzing and processing, and system synchronization demonstrates the track and the speed of 2 motions;
When carrying out the test of mandibular border movement locus; The tester accomplishes the maximum mouthful motion that opens and closes successively; Maximum protrusive movement, maximum left and right side motion, requiring every motion is starting point and terminal point with the stationary position position of remaining silent all; Data are passed to said host computer analyzing and processing, and the system synchronization record shows the mandibular border movement locus.
Further; Step c specifically comprises: when carrying out jaw position and
stability test; It is poor at the moving displacement of vertical direction, fore-and-aft direction and side direction to try to achieve respectively more than 2 times; Try to achieve the average of vertical direction, fore-and-aft direction and side direction moving displacement difference more respectively; Make comparisons with the threshold values of setting respectively; If exceed threshold values; Show that then the tester judges that mandibular movement is stable undesired with
, need cure;
When movement rate that opens and closes mouthful track and smoothness test; The mandibular movement three-dimensional track and the speed of record are made comparisons with lower jaw standard movement track and standard speed that system stores respectively; Whether the mandibular movement index of judging said three-dimensional track is the same; If different, show that then mandibular movement and dental articulation are undesired;
When carrying out mandibular border movement locus when test, systematic comparison is maximum to open and close the opening track in mouthful motion and whether the shift length between the track of remaining silent surpasses the threshold values of regulation; Perhaps whether opening track in the maximum protrusive movement of systematic comparison and the shift length between the track of remaining silent surpass the threshold values of regulation; The perhaps opening track in the maximum left and right side motion of systematic comparison and remain silent whether shift length surpasses the threshold values of regulation between the track if judge and surpass threshold values, shows that then the interlock and the flesh function of corresponding certain direction is inharmonious.
Adopt Mandible movement track recording system of the present invention and method can write down the tester open remain silent, lateral movement, mandibular protraction, retreat, the movement locus at labial teeth point of contact down in the typical motion such as masticatory movement; Directly reflect mandibular movement and dental articulation matching degree, and can be familiar with the objective phenomenon of flesh dysfunction by the characteristic of movement locus figure.For example normal open and close mouth track is a basically identical, if the track of remaining silent breaks away from the opening track apart from excessive, such as surpassing more than the 0.5mm, shows that then interlock and flesh function are inharmonious.So the performance of mandibular movement track is mandibular movement, is actually the whether normal objective sign of jawbone flesh function, is very useful medical examination means.
Certainly; The improvement of mandibular movement track record pattern of the present invention and method; Interlock to the reparation of oral medicine tooth body, the making of Oral Repair artificial tooth, oral cavity periodontal section grinds, the Orthodontics interlock is adjusted, and especially the diagnosis of TMJ training temporomandibular disorder and treatment are all significant.The foundation of this method is the basis of TMJ rehabilitation training system and method, also is the follow-up basis of setting up cranium jaw face sports system.
Mandible movement track recording system low cost of manufacture of the present invention, more convenient operation, coupling utilization track calculating analysis software improve test accuracy.
Description of drawings
Fig. 1 is in the Mandible movement track recording system of the present invention, the structural representation of the embodiment one of test badge bar.
Fig. 2 is in the Mandible movement track recording system of the present invention, the structural representation of the embodiment two of test badge bar.
Fig. 3 is the block diagram of mandibular movement track record analytical method of the present invention.
Fig. 4 is the normal mandibular movement track record ideograph that utilizes system of the present invention to take.
Fig. 5 is that chew and the mandibular border movement locus figure of the pain-suffered patient of dehiscing in the left side that utilizes system of the present invention to take.
The specific embodiment
In order to make the object of the invention, technical scheme and advantage clearer, will combine Figure of description that the present invention is done to describe in detail further below.
Mandibular movement track record analytical system of the present invention comprises, test badge bar, at least 2 infrared cameras, and the infrared camera of best zone of preference infrared launcher, infrared camera are connected with the host computer that is used to analyze the shooting record data.The test badge rod rear end is fixed on tester's lower jaw incisor position; Test badge bar front end connects a label and exposes outside the mouth and along with lower jaw moves together; Reflection mandibular movement track; The movement locus of infrared camera record test badge bar front end label sends motion trace data to the host computer analyzing and processing, judges whether mandibular movement and upper and lower dentition interlock be normal.
Concrete; There is 3 D motion trace to rebuild software, three-dimensional track analytical judgment program in the host computer; And data base; Store all ages and classes, different sexes crowd's lower jaw standard movement track and parameters, parameter comprises the lower jaw decision threshold of standard speed, each direction of motion etc. that moves up and down.
As shown in Figure 1, the position bending that the test badge pole pair should be gone up incisor is spill 1, is used for the interlock that correspondence is dodged incisor, and front tooth stops that the test badge bar moves with lower jaw before promptly preventing.The test badge rod rear end is fixed on tester's lower jaw incisor, and front end connects a label 2 and exposes outside the mouth along with lower jaw moves together.According to other embodiments of the present invention, as shown in Figure 2, the test badge rod rear end is arch 3, is used for fixing to be stuck on the lower incisor.
But label is the little ball of a reflects infrared light, and little ball scribbles reflectorized material, can make things convenient for its movement locus of infrared camera record like this.The test badge rod rear end is fixed on lower jaw incisor position by steel wire or plastics silk through diastema; Perhaps the test badge rod rear end is fixed on lower jaw incisor position through magnetic devices, fixes such as holding the test badge rod rear end with 2 powerful small magnets; Perhaps the test badge rod rear end is fixed on lower jaw incisor surface through the press mold mode, such as with gum elastic cover or press mold the test badge rod rear end being fixed on 4 lower jaw incisor surfaces.
The support of infrared camera through adjustable height and angle is fixed on around tester's face, adopts at least two infrared cameras.For example, when adopting two infrared cameras, one of them infrared camera can be placed on the facial dead ahead of tester, the label of record test badge bar front end at frontal plane, i.e. movement locus on the coronalplane; Another infrared camera can be placed on tester's side, the movement locus on sagittal plane of the label of record test badge bar front end.Two movement locus of taking from diverse location combine, and can obtain the 3 D motion trace of test badge pole brand thing, the promptly corresponding lower jaw 3 D motion trace that meets the tester through the coordinate algorithm for reconstructing in the computer.Such as photographic head take x (about) direction and z (up and down) direction, another one photographic head shooting y (front and back) direction and z (up and down) direction, two photographic head shooting picture are combined in one just can reduce x, y, the coordinate of three directions of z.If adopt three photographic head to take certainly, effect can be better, but also increased some costs.
System is through host computer analyzing and processing tester's lower jaw 3 D motion trace; Compare with standard mandibular movement track and threshold values; Specifically be open remain silent, lateral movement, mandibular protraction, retreat, the movement locus at labial teeth point of contact down in the typical motion such as masticatory movement, whether can be familiar with lower jaw muscle function disorderly situation and dental articulation situation by the characteristic of movement locus figure normal.
As shown in Figure 3, the invention also discloses a kind of mandibular movement track recording method, it may further comprise the steps:
101, the test badge rod rear end is fixed on tester's lower jaw incisor position, label of test badge bar front end connection exposes mouth and moves outward and with lower jaw;
102, write down the motion track of test badge bar front end label at least through the infrared camera of 2 band infrared launchers, send mobile trajectory data to the host computer analyzing and processing;
103, through in computer, rebuilding the deformation trace of label; Correspondence has reflected the three-dimensional track of tester's mandibular movement; The mandibular movement three-dimensional track of record is made comparisons with lower jaw standard movement track and canonical parameter that system stores respectively with the relevant parameter that calculates, judge whether mandibular movement and upper and lower dentition interlock be normal.
Concrete, mandibular movement track recording method disclosed by the invention comprises step:
1, with the infrared camera cross fixation of 2 band infrared light emission functions around patient's face; One of them infrared camera can be placed on the facial dead ahead of tester; The movement locus on volume (hat) shape face of the label of record test badge bar front end; Another infrared camera can be placed on tester's side, the movement locus on sagittal plane of the label of record test badge bar front end.
2, the experimenter sits up straight, and the double vision plane is parallel with ground level, and the head position is fixing, and the above nothing of shoulder supports.The test badge rod rear end is fixed on tester's the lower incisor, outside the labelling bead extending port of test badge bar front end.The test badge rod rear end is fixed on lower jaw incisor position by steel wire or plastics silk through diastema; Perhaps the test badge rod rear end is fixed on lower jaw incisor position through magnetic devices; Perhaps the test badge rod rear end is fixed on lower jaw incisor surface through the press mold mode.Open the mandibular movement track record software system in the host computer, and carry out the calibration of photographic head, affirmation labelling bead is suitably adjusted in image pickup scope.
3, advise the tester to keep intercuspal position, parallel the motion of remaining silent after obtaining continuous 6 seconds stable recording data, begins to test.
4, when carrying out jaw position and
stability test; Experimenter's clicking the teeth 2 times; From the posture position (mandibleposture position, MPP) opening entry is promptly from stationary position position opening entry that the tester remains silent; Slowly dehisce to maximum position; Slowly remain silent then, mandibular protraction to tooth is cut the stationary position position of remaining silent to switching back to, and system synchronization shows its movement locus and shift value; Repeat this motion at least 2 times, data are passed to the host computer analyzing and processing.It is poor at the moving displacement of vertical direction, fore-and-aft direction and side direction that control software in the host computer is tried to achieve respectively more than 2 times; Try to achieve the average of vertical direction, fore-and-aft direction and side direction moving displacement difference more respectively; Make comparisons with the threshold values of setting respectively; The threshold value setting scope is 0.05-0.50mm, can adjust according to tester's age, sex.Such as setting threshold values is 0.25mm; If wherein the displacement difference of arbitrary direction (vertical direction, fore-and-aft direction, side direction) is greater than 0.25mm; Show that then this patient MPP-ICP is unstable; Be that mandibular movement is stable undesired with
, need cure.
When movement rate that opens and closes mouthful track and smoothness test; The experimenter is from intercuspal position (intercuspal position; ICP) opening entry opens and closes mouth 1 time earlier naturally, opens and closes mouth then 1 time greatly and soon; Data are passed to the host computer analyzing and processing, and system synchronization demonstrates the track and the speed of 2 motions.Control software in the host computer is made comparisons the mandibular movement three-dimensional track of record and the lower jaw standard movement track and the standard speed of speed and system's storage respectively; Whether the mandibular movement index of judging these tracks is the same; If different, judge that then mandibular movement and dental articulation are undesired.
When carrying out the test of mandibular border movement locus; The tester accomplishes the maximum mouthful motion that opens and closes successively; Maximum protrusive movement, maximum left and right side motion, requiring every motion is starting point and terminal point with the stationary position position of remaining silent all; Data are passed to the host computer analyzing and processing, and the system synchronization record shows the mandibular border movement locus.(mandibular movement index, MMI), MMI mainly utilizes the coronalplane track to carry out to the mandibular movement index of calculating and these tracks of comparison.Control software in the host computer is relatively maximum to open and close the opening track in mouthful motion and whether the shift length between the track of remaining silent surpasses the threshold values of regulation; Perhaps whether opening track in the maximum protrusive movement of systematic comparison and the shift length between the track of remaining silent surpass the threshold values of regulation; Perhaps whether opening track in the maximum left and right side motion of systematic comparison and the shift length between the track of remaining silent surpass the threshold values of regulation.If judge to surpass threshold values, show that then the interlock and the flesh function of corresponding certain direction is inharmonious.The threshold value setting scope is 0.20-0.60mm, can adjust according to tester's age, sex.For example, normal open and close mouth track is a basically identical, for 25 years old male, breaks away from the opening track apart from excessive if maximum opens and closes the track of remaining silent in mouthful motion, surpasses more than the 0.5mm, shows that then interlock and flesh function are inharmonious, needs to cure.
Fig. 4 is the normal mandibular movement track record ideograph that utilizes system that the present invention sets up to take.Wherein left hand view is a sagittal plane border movement fundamental figure: write down the maximum motion of remaining silent of opening, maximum is protracted and setback.The maximum protrusive position of P point expression; The maximum mouth-open of O point expression; RCP point expression retruded contact position; The maximum intercuspal position of ICP point expression.Under the normal condition, constant from maximum protrusive position (P) to maximum mouth-open (O) track, under the back, be a smooth curve on the past, and the track that protracts (being that the ICP point is to the P locus of points) is influenced by incisal guide, curve is than irregularity.
Right part of flg is a coronalplane border movement track among Fig. 4, and the reflection maximum is dehisced and maximum lateral movement.R point expression right side edge motion interlock position; L point expression left side edge motion interlock position; The maximum mouth-open of O point expression; The maximum intercuspal position of ICP point expression.Under the normal condition, open the motion of remaining silent and be the middle straight line of vertical direction (the left and right directions bending change is little); Symmetrical basically about the lateral edge motion.More stable from lateral edge interlock position to the track of maximum mouth-open (being that R point or L point are to the O locus of points).
Fig. 5 is that chew and the mandibular border movement locus of the pain-suffered patient of dehiscing in a left side.The movement locus of all directions, particularly left side edge are unusual for the track of dehiscing, and each turning point departs from normal border movement ideograph, and remarkable with Ipsilateral.In addition, range of movement, particularly mouth opening reduces.Irregular beat appears in left and right sides lateral movement, the vertical movement locus of remaining silent of opening; Estimate that the intraarticular disorder appears in this patient; The variation of type causes dehiscing; And the weak point of the track that protracts and irregular, prompting maybe this patient has that to cover
dark, cover shallow occlusion condition.
According to the announcement and the instruction of above-mentioned description, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this description, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (4)
1. Mandible movement track recording system; It is characterized in that: comprise test badge bar, at least two infrared cameras and be used to analyze the shooting record data host computer; The test badge rod rear end is fixed on tester's lower jaw incisor position, and test badge bar front end connects a label and exposes outside the mouth and along with lower jaw moves together, reflection mandibular movement track; Two infrared cameras support through adjustable height and angle is fixed on around tester's face; One of them infrared camera is put in the facial dead ahead of tester, writes down the movement locus of label on coronalplane of said test badge bar front end, and another infrared camera is put in tester's side; Write down the movement locus of label on sagittal plane of said test badge bar front end, send motion trace data to the host computer analyzing and processing;
There is 3 D motion trace to rebuild software, three-dimensional track analytical judgment program in the said host computer, and a data base, stores all ages and classes, different sexes crowd's lower jaw standard movement track and parameters,
Through in computer, rebuilding the movement locus of label; Correspondence has reflected the three-dimensional track of tester's mandibular movement; The mandibular movement three-dimensional track of record is made comparisons with lower jaw standard movement track and canonical parameter that system stores respectively with the relevant parameter that calculates, judge whether mandibular movement and upper and lower dentition interlock be normal.
2. Mandible movement track recording system according to claim 1 is characterized in that: the position bending that said test badge pole pair should be gone up incisor is spill, is used for the interlock that correspondence is dodged incisor.
3. Mandible movement track recording system according to claim 1 and 2 is characterized in that: said test badge rod rear end is fixed on lower jaw incisor position by steel wire or plastics silk through diastema; Perhaps said test badge rod rear end is fixed on lower jaw incisor position through magnetic devices; Perhaps said test badge rod rear end is fixed on lower jaw incisor position through the press mold mode.
4. Mandible movement track recording system according to claim 1 and 2 is characterized in that: the label of said test badge bar front end is the little ball that a surface scribbles reflectorized material, can move reflection mandibular movement track along with lower jaw together.
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|---|---|---|---|---|
| US4673352A (en) * | 1985-01-10 | 1987-06-16 | Markus Hansen | Device for measuring relative jaw positions and movements |
| US5340309A (en) * | 1990-09-06 | 1994-08-23 | Robertson James G | Apparatus and method for recording jaw motion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100608997B1 (en) * | 2002-08-26 | 2006-08-09 | 한국과학기술연구원 | Apparatus and method for measuring jaw motion |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4673352A (en) * | 1985-01-10 | 1987-06-16 | Markus Hansen | Device for measuring relative jaw positions and movements |
| US5340309A (en) * | 1990-09-06 | 1994-08-23 | Robertson James G | Apparatus and method for recording jaw motion |
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| CN101912267A (en) | 2010-12-15 |
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