CN113349956A - Positioning device and transfer positioning method for tooth correction target - Google Patents
Positioning device and transfer positioning method for tooth correction target Download PDFInfo
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- CN113349956A CN113349956A CN202010149100.6A CN202010149100A CN113349956A CN 113349956 A CN113349956 A CN 113349956A CN 202010149100 A CN202010149100 A CN 202010149100A CN 113349956 A CN113349956 A CN 113349956A
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- 238000012546 transfer Methods 0.000 title claims abstract description 45
- 238000012937 correction Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 16
- 210000001983 hard palate Anatomy 0.000 claims abstract description 11
- 201000000615 hard palate cancer Diseases 0.000 claims abstract description 11
- 210000000214 mouth Anatomy 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 claims description 12
- 210000000332 tooth crown Anatomy 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 210000004283 incisor Anatomy 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000007943 implant Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 238000010603 microCT Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
- A61C7/14—Brackets; Fixing brackets to teeth
- A61C7/146—Positioning or placement of brackets; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
- A61C7/28—Securing arch wire to bracket
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention relates to a positioning device and a transfer positioning method for a tooth correction target, wherein the device comprises a positioning ruler, a sleeve, an arch wire bracket and an arch wire; the method is characterized in that a computer-designed correction target is formed on a tooth model by using a positioning ruler and a sleeve, and then transferred into a mouth by using an arch wire bracket and an arch wire and fixed on a hard palate to form a controllable method of the correction target. The invention has the characteristics of unique conception, reasonable structure of the positioning device, simple operation of target transfer and easy control in clinic.
Description
The technical field is as follows:
the invention belongs to the field of orthodontic treatment, and particularly relates to a positioning device and a transfer positioning method for a tooth correction target, in particular to a correction method which can transfer a target designed by computer assistance into a mouth by means of the positioning device and form a target reference.
Background art:
the existing computer aided design plays an important role in various industries, not only can design and simulate a real product, but also can predict a change result or a design target result. In the field of orthodontic treatment, a target design thought is introduced, a correction result can be predicted, a change process can be deduced in stages, and a traditional unpredictable correction process is changed into a predictable target. But still difficult to grasp in clinic because the computer design target can not be accurately transferred into the mouth and can only be used as an operation reference of a clinician.
To this end, equipment and methods are provided that can shift design goals into, and become the subject of the present study.
The invention content is as follows:
the invention aims to design a tooth correction target positioning device and a transfer positioning method, which can transfer a correction target designed by a computer to an intraoral hard palate part through a positioning ruler to form a correction reference.
The technical scheme of the invention is realized as follows:
a tooth correction target positioning device is characterized in that: comprises the following steps:
the positioning ruler is provided with a center rod, a front tooth adjusting rod, a left tooth adjusting rod and a right tooth adjusting rod, is placed on crowns of front teeth, left teeth and right teeth of the tooth model, determines an occlusion plane of a corrected target and provides a central axis datum;
the sleeve is provided with a rectangular hole matched with the front end of the central rod, can be sleeved at the front end of the central rod and is bonded on the front tooth seam of the tooth model to be used as a fulcrum of the arch wire positioning bracket;
the arch wire bracket is sequentially connected into a whole by a connecting rod, an arch wire groove and an anchoring frame; the connecting rod penetrates through the rectangular hole of the sleeve to form constraint, the constraint is adjusted to a position corresponding to the correction amount of the anterior teeth, and the anchoring frame can be fixed on the hard palate part by the implant anchorage nail;
the arch wire is made of hard material, is of an arc-shaped non-deforming structure designed according to the correction target, and the middle part of the arch wire can be locked in the arch wire groove.
The front tooth adjusting rod in the positioning ruler is movably arranged at the front part of the central rod, is parallel to the front end of the central rod, can be adjusted in the vertical direction and is placed on the front tooth crown to form a middle fulcrum; the left tooth adjusting rod is perpendicular to the central rod and movably arranged at the rear part of the central rod, can slide back and forth along the central rod and can be adjusted in the vertical direction, and is placed on the left rear tooth crown to form a left fulcrum; the right tooth adjusting rod is perpendicular to the central rod and movably arranged at the rear part of the central rod, can slide back and forth along the central rod and can be adjusted in the vertical direction, and the right tooth adjusting rod is placed on the lateral rear dental crown to form a right side supporting point.
The section of the central rod is of a rectangular structure, a vertical groove is formed in the front of the central rod, a reference rod extends forwards from the vertical groove, and the sleeve is positioned by means of the reference rod; the vertical groove is used for positioning a front tooth adjusting rod, and a front vertical rod connected with the end part of the front tooth adjusting rod is slidably arranged in the vertical groove in a penetrating manner; the left tooth adjusting rod is positioned on the central rod in a sliding mode through a left sliding seat, a left vertical groove is formed in the left sliding seat, and a left vertical rod connected with the end of the left tooth adjusting rod penetrates through the left vertical groove in a sliding mode; the right tooth adjusting rod is positioned on the central rod in a sliding mode through the right sliding seat, a right vertical groove is formed in the right sliding seat, and a right vertical rod connected with the end of the right tooth adjusting rod penetrates through the right vertical groove in a sliding mode.
And the vertical groove, the left vertical groove and the right vertical groove of the central rod are all provided with locking jackscrews which penetrate through the vertical grooves.
A method for realizing tooth correction target transfer positioning by using the tooth correction target positioning device comprises the following specific steps:
firstly, determining an orthodontic treatment target, introducing an oral cavity image through a computer, designing a treatment target on the basis of the oral cavity image, and determining the orthodontic amount and the occlusion plane position of anterior teeth; and making a tooth model;
determining an occlusion plane, wherein the occlusion plane is determined at three points on the tooth model by means of the front tooth adjusting rod on the positioning ruler being abutted against a pair of incisors, the left and right tooth adjusting rods being correspondingly abutted against the left and right rear tooth crowns, and adjusting the end surface of the front tooth adjusting rod to be flush with the front tooth surface;
thirdly, adhering a sleeve, wherein the sleeve is sleeved and adhered on the incisors of the tooth model by taking the reference rod at the front end of the center rod of the positioning ruler as a reference, the occlusal plane determined by the positioning ruler is transferred to the sleeve, and the sleeve is taken as the reference of the occlusal plane guided by the appliance;
fourthly, placing the arch wire bracket, inserting the sleeve and adjusting the forward and backward movement amount of the arch wire bracket by means of a connecting rod at the front end of the arch wire bracket, wherein the movement amount is the sum of the thickness of the lingual bracket and the correction amount of the corrected target anterior tooth;
placing the arch wire into an arch wire groove of the arch wire bracket, adjusting the center position and ligating;
sixthly, casting a transfer guide plate, wherein the transfer guide plate is cast on the dental crown by adopting resin, and the sleeve, the arch wire bracket and the arch wire are connected into a whole; after curing, the whole body is separated from the tooth model to form a transfer guide plate with an arch wire bracket and an arch wire;
seventhly, placing the prepared transfer guide plate into the transfer opening, and adjusting the transfer guide plate to enable the crown indentation of the transfer guide plate to be aligned with and inosculated with the crown of the tooth; implanting an anchorage nail at the hard palate part, and ligating and fixing the arch wire bracket;
and eighthly, taking down the transfer guide plate, cutting the connecting rod of the arch wire bracket, taking down the transfer guide plate, and leaving the arch wire and the anchoring frame of the arch wire bracket, wherein the arch wire is the corrected target position.
The invention has the characteristics of unique conception, reasonable structure of the positioning device, simple operation of target transfer and easy control in clinic; and quantifying the intangible correction target simulated by the computer by using a positioning device, forming a correction standard on the tooth model, transferring the correction standard into the mouth and fixing the correction standard on the hard palate part to form a scheme with controllable correction target.
Description of the drawings:
the invention is further illustrated with reference to the following specific figures:
FIG. 1 is a schematic view of a positioning ruler
FIG. 2 is an exploded view of the positioning ruler
Fig. 3 is a schematic view of the relationship between the arch wire bracket and the sleeve
FIG. 4 is a schematic view of the set rule resting on the dental model
FIG. 5 is a schematic view of the top of the front teeth of the socket bonded tooth model
FIG. 6 is a schematic view of the anterior dentition of the socket and tooth model
Figure 7 is a schematic representation of the relationship of an archwire bracket to a sleeve
Figure 8 is a schematic view of the relationship of an arch wire bracket and an arch wire
FIG. 9 is a schematic view of a casting transfer guide
Figure 10 is a schematic view of an archwire-carrying bracket transfer guide plate
FIG. 11 is a schematic view of a transfer guide placed over a tooth in the mouth
FIG. 12 is a schematic view of intraoral target positioning
FIG. 13 is a schematic view of the relationship between target positioning and bracket
Wherein
1-positioning rule 11-central rod 111-vertical groove 112-reference rod
12-front tooth adjusting rod 121-front vertical rod 13-left tooth adjusting rod 131-left vertical rod
14-right tooth adjusting rod 141-right vertical rod 15-left sliding seat 151-left vertical groove
16-right slide carriage 161-right vertical groove 17-locking jackscrew 2-sleeve
21-rectangular hole 3-arch wire bracket 31-connecting rod 311-scale mark
32-arch wire groove 33-anchoring frame 4-arch wire 5-tooth model
51-bracket 6-transfer guide plate 7-anchorage nail
The specific implementation mode is as follows:
referring to fig. 1, 2 and 3, a dental appliance target positioning device includes the following components: a positioning ruler 1, a sleeve 2, an arch wire bracket 3 and an arch wire 4.
The positioning ruler 1 is provided with a central rod 11, a front tooth adjusting rod 12, a left tooth adjusting rod 13 and a right tooth adjusting rod 14; wherein:
the section of the center rod 11 is of a rectangular structure, the bottom plane is used as an observation and measurement reference plane, such as an XY plane of a three-dimensional coordinate system, and the center plane of the center rod 11 is an XZ plane; the front part of the central rod 11 is provided with a vertical groove 111, the vertical groove 111 extends forwards to form a reference rod 112, and the sleeve is positioned by the reference rod 112;
the front tooth adjusting rod 12 is movably arranged in a vertical groove 111 in the front part of the central rod, namely, the front tooth adjusting rod 12 is slidably arranged in the vertical groove 111 by virtue of a front vertical rod 121 with a connected end part, is parallel to a reference rod 112 at the front end of the central rod 11, can be adjusted in the vertical direction along the vertical groove 111, and adjusts an occlusion plane, namely, a plane parallel to XY; the front tooth adjusting rod 12 is placed on the front tooth crown to form a central pivot, and the front end surface is adjusted to be flush with the tooth surface, namely the front end surface is a YZ plane with three-dimensional coordinates.
And the left tooth adjusting rod 13 is perpendicular to the central rod 11 and movably arranged at the rear part of the central rod, can slide back and forth along the central rod 11 and can be adjusted in the vertical direction, and is placed on the left rear crown to form a left fulcrum. More specifically, the left tooth adjusting rod 13 is slidably positioned on the central rod 11 by means of the left sliding seat 15, a left vertical groove 151 is formed in the left sliding seat 15, and a left vertical rod 131 connected with the end of the left tooth adjusting rod 13 is slidably arranged in the left vertical groove 151 in a penetrating manner, so that the adjustment in the vertical direction is realized.
The right tooth adjusting rod 14 is perpendicular to the central rod 11 and movably arranged at the rear part of the central rod 11, can slide back and forth along the central rod 11 and can be adjusted in the vertical direction, and is placed on the lateral rear dental crown to form a right side fulcrum. More specifically, the right tooth adjusting rod 14 is slidably positioned on the central rod 11 by means of a right sliding seat 16, a right vertical groove 161 is formed in the right sliding seat 16, and a right vertical rod 141 connected to the end of the right tooth adjusting rod 14 is slidably disposed in the right vertical groove 161, so as to achieve adjustment in the vertical direction.
The front and back movement of the left tooth adjusting rod 13 and the right tooth adjusting rod 14 can select the position of the laid dental crown so as to adjust the occlusal plane. Namely, the positioning ruler 1 is placed on the crowns of the front teeth, the left back teeth and the right back teeth of the tooth model 5, the occlusion plane of the orthodontic target is determined by three points, and the central axis datum is provided. And on the vertical groove 111, the left vertical groove 151 and the right vertical groove 161 of the central rod, locking jackscrews 17 penetrating through the vertical grooves are arranged for locking three supporting points to enable the central rod 11 to be in a stable position for other operations.
The sleeve 2 is provided with a rectangular hole 21 matched with a reference rod 112 at the front end of the central rod 11, can be sleeved on the reference rod 112 at the front end of the central rod, is bonded on a front tooth seam of the tooth model 5 and is used as a fulcrum for positioning the arch wire support 3; the gauge 1 is also passed through the sleeve 2, transferred and cured on the dental model 5.
The arch wire bracket 3 is sequentially connected into a whole by a connecting rod 31, an arch wire groove 32 and an anchoring frame 33; the connecting rod 31 is arranged in the rectangular hole 21 of the sleeve in a penetrating way to form restraint, and the position is adjusted to the position corresponding to the correction amount of the anterior teeth; during processing, the arch wire bracket 3 and the bracket 51 are matched with each other, and the connecting rod 31 is provided with a scale mark 311 for observing and adjusting the movement amount.
The arch wire 4 is made of hard material, has an arc-shaped non-deforming structure designed according to the correction target, and the middle part can be locked in the arch wire groove 32. Because the arch wire 4 is hard and does not deform, the position of the arch wire is the correction target position; the brackets bonded on the lingual side gradually draw close to the arch wire 4 and form abutting alignment under the action of ligation force or other abutting force. For this reason, the arch wire 4 is designed as an orthodontic reference position unlike an arch wire in the conventional sense.
Referring to fig. 4 to 13, the dental model 5, i.e., the dental model before correction, generates the dental model 5 for the transfer operation of the correction target reference; that is, after the bracket 51 is bonded to the lingual side of the tooth model 5 and ligated with the archwire 4, the sleeve 2, the archwire bracket 3 and the archwire 4 are integrally connected by casting resin on the crown, and are detached after curing to form a transfer guide 6 with the archwire bracket and the archwire for clinical transfer into the mouth and fixation, and then ligated with the lingual bracket 51.
With reference to fig. 4 to 13, the following is a method for positioning a orthodontic target transfer by using the orthodontic target positioning device, and the method includes the following specific steps:
firstly, determining an orthodontic treatment target, introducing an oral cavity image through a computer, or acquiring an oral cavity three-dimensional image by adopting Micro-CT scanning, designing a treatment target on the basis of the oral cavity image, and determining the orthodontic amount and the occlusal plane position; and according to the image data, making an original tooth model 5 before correction, as shown in fig. 4;
secondly, determining an occlusal plane, wherein the occlusal plane is determined on the tooth model 5 by means of the positioning ruler 1; a front tooth adjusting rod 12 on the positioning ruler is abutted against a pair of incisors, left and right tooth adjusting rods 13 and 14 are correspondingly abutted against left and right rear tooth crowns, the end surface of the front tooth adjusting rod 12 is adjusted to be flush with the front tooth surface, and an occlusion plane is determined at three points on the tooth model 5; the correction scheme of adduction of 2mm and depression of 1mm in anterior teeth is explained as an example: the positioning ruler 1 is in an initial design state, the bottom surface of the front tooth adjusting rod 12 is flush with the bottom surface of the central rod 11 to serve as an original plane, when the correcting pressure is reduced by 1mm, the front tooth adjusting rod 12 is lifted by 1mm along the vertical direction, the front tooth adjusting rod 12 is placed on a front tooth crown at the moment, and the bottom surface of the central rod 11 is an occlusal plane of a correcting target; as shown in FIG. 4;
thirdly, a sleeve is bonded, the sleeve 2 is sleeved and bonded on the incisors of the tooth model 5 by taking the reference rod 112 at the front end of the center rod of the positioning ruler as a reference, the occlusal plane determined by the positioning ruler 1 is transferred to the sleeve 2, and then the sleeve 2 is taken as the reference of the occlusal plane guided by the appliance; as in fig. 5 and 6;
fourthly, placing the arch wire bracket, inserting the sleeve 2 by the connecting rod 31 at the front end of the arch wire bracket 3 and adjusting the forward and backward movement amount of the arch wire bracket 3, wherein the movement amount is the sum of the thickness of the lingual bracket 51 and the correction amount of the corrected target anterior tooth; when the arch wire bracket 3 is designed and manufactured, one scale mark 311 of the connecting rod 31 is a specific alignment line which is flush with the inner end surface of the sleeve 2, and the distance between the arch wire groove 32 and the inner end surface of the sleeve 2 is just one tooth thickness, therefore, the connecting rod 31 is adjusted by adding the adduction amount of 2mm and the thickness of the specific bracket 51. Assuming that the thickness of the patient's teeth exceeds the design parameters, either the adhesive compensation is used or the actual measurement difference is adjusted again by the scale lines 311 on the connecting rod; the correction amount can be determined through the arch wire bracket 3; as in fig. 6 and 7;
placing the arch wire, placing the arch wire 4 into an arch wire groove 32 of the arch wire bracket, adjusting the central position and ligating; namely, the correcting target is transferred to the hard and non-deformable arch wire 4; as shown in FIG. 8;
sixthly, casting a transfer guide plate, namely casting a transfer guide plate 6 on the dental crown by adopting resin, and connecting the sleeve 2, the arch wire bracket 3 and the arch wire 4 into a whole; after solidification, the whole body is separated from the tooth model 5 to form a transfer guide plate 6 with an arch wire bracket and an arch wire, and preparation is made for transferring the orthodontic target into the mouth; as in fig. 9 and 10;
seventhly, placing the prepared transfer guide plate 6 into the transfer opening, and adjusting the transfer guide plate 6 to enable the crown indentation of the transfer guide plate to be aligned with and inosculated with the crown of the tooth; implanting an anchorage nail 7 in the hard palate part, ligating and fixing the arch wire bracket 3, and more specifically, anchoring the anchoring frame 33 on the hard palate through the anchorage nail 7; connecting the correction target with the intraoral hard palate; as shown in FIG. 11;
eighthly, the transfer guide plate is taken down, the connecting rod 31 of the arch wire bracket is cut, namely, the connecting part of the arch wire bracket and the arch wire groove 32 is cut, the transfer guide plate 6 is taken down, the arch wire 4 and the anchoring frame 33 of the arch wire bracket are left, the arch wire 4 is locked at the hard palate part by the anchoring frame 33, and the position of the arch wire 4 is the correcting target position; clinically, the corresponding brackets 51 are bonded on the lingual side of the teeth, and are ligated with the arch wire 4 one by one, the orthodontic force is adjusted, the orthodontic force gradually contracts the teeth to the arch wire 4, that is, the teeth touch the arch wire 4, and the orthodontic aim is completed, as shown in fig. 12 and 13.
In summary, the positioning device for the dental correction target can transfer the computer virtual correction target into the mouth to implement precise customization, thereby solving the clinical operation.
Claims (5)
1. A tooth correction target positioning device is characterized in that: comprises the following steps:
the positioning ruler (1) is provided with a center rod (11), a front tooth adjusting rod (12), a left tooth adjusting rod (13) and a right tooth adjusting rod (14), is placed on crowns of a front tooth, a left tooth and a right tooth of a tooth model (5), determines an occlusion plane of an orthodontic target and provides a central axis datum;
the sleeve (2) is provided with a rectangular hole (21) matched with the front end of the central rod (11), can be sleeved at the front end of the central rod (11), is bonded on a front tooth seam of the tooth model (5) and is used as a fulcrum of the positioning arch wire support (3);
the arch wire bracket (3) is connected into a whole by a connecting rod (31), an arch wire groove (32) and an anchoring frame (33) in sequence; the connecting rod (31) penetrates through the rectangular hole (21) of the sleeve (2) to form constraint, the constraint is adjusted to a position corresponding to the correction amount of the anterior teeth, and the anchoring frame (33) can be fixed on a hard palate part by the implant anchorage nail (7);
the arch wire (4) is made of hard material, is designed into an arc-shaped non-deformable structure according to the correction target, and the middle part of the arch wire (4) can be locked in the arch wire groove (32).
2. The dental appliance target positioning device of claim 1, wherein: a front tooth adjusting rod (12) in the positioning ruler (1) is movably arranged at the front part of the central rod (11), is parallel to the front end of the central rod (11), can be adjusted in the vertical direction, and is placed on a front tooth crown to form a central fulcrum; the left tooth adjusting rod (13) is perpendicular to the central rod (11), movably arranged at the rear part of the central rod (11), can slide back and forth along the central rod (11) and can be adjusted in the vertical direction, and is placed on the left rear crown to form a left fulcrum; the right tooth adjusting rod (14) is perpendicular to the central rod (11) and movably arranged at the rear part of the central rod (11), can slide back and forth along the central rod (11) and can be adjusted in the vertical direction, and is placed on the lateral rear dental crown to form a right fulcrum.
3. The dental appliance target positioning device of claim 1 or 2, wherein: the section of the central rod (11) is of a rectangular structure, a vertical groove (111) is formed in the front of the central rod, a reference rod (112) extends forwards from the vertical groove (111), and the sleeve (2) is positioned by means of the reference rod (112); the vertical groove (111) is used for positioning the front tooth adjusting rod (12), and a front vertical rod (121) connected with the end part of the front tooth adjusting rod (12) penetrates through the vertical groove (111) in a sliding mode; the left tooth adjusting rod (13) is positioned on the central rod (11) in a sliding mode through the left sliding seat (15), a left vertical groove (151) is formed in the left sliding seat (15), and a left vertical rod (131) connected with the end of the left tooth adjusting rod (13) penetrates through the left vertical groove (151) in a sliding mode; the right tooth adjusting rod (14) is positioned on the central rod (11) in a sliding mode through the right sliding seat (16), a right vertical groove (161) is formed in the right sliding seat (16), and a right vertical rod (141) connected with the end of the right tooth adjusting rod (14) penetrates through the right vertical groove (161) in a sliding mode.
4. The dental appliance target positioning device of claim 3, wherein: and locking jackscrews (17) penetrating through the vertical grooves are arranged on the vertical groove (111), the left vertical groove (151) and the right vertical groove (161) of the central rod (11).
5. A tooth correction target transfer positioning method is characterized by comprising the following steps: the method comprises the following specific steps:
firstly, determining an orthodontic treatment target, introducing an oral cavity image through a computer, designing a treatment target on the basis of the oral cavity image, and determining the orthodontic amount and the occlusion plane position of anterior teeth; and making a tooth model (5);
secondly, determining an occlusion plane, wherein the front tooth adjusting rod (12) on the positioning ruler (1) is abutted against a pair of incisors on the tooth model (5), the left and right tooth adjusting rods (13) and (14) are correspondingly abutted against the left and right rear tooth crowns, the end surface of the front tooth adjusting rod (12) is adjusted to be flush with the front tooth surface, and the occlusion plane is determined at three points on the tooth model (5);
thirdly, a sleeve (2) is bonded, the sleeve (2) is sleeved on and bonded to incisors of the tooth model (5) by taking a reference rod (112) at the front end of a center rod (11) of the positioning ruler as a reference, an occlusal plane determined by the positioning ruler (1) is transferred to the sleeve (2), and then the sleeve (2) is taken as an occlusal plane reference for guiding the appliance;
fourthly, placing the arch wire bracket (3), inserting the sleeve (2) by means of a connecting rod (31) at the front end of the arch wire bracket (3) and adjusting the forward and backward movement amount of the arch wire bracket (3), wherein the movement amount is the sum of the thickness of the lingual bracket and the correction amount of the corrected target anterior tooth;
fifthly, placing the arch wire (4) into an arch wire groove (32) of the arch wire bracket (3), adjusting the central position and ligating;
sixthly, a casting transfer guide plate (6) is used for casting the transfer guide plate (6) on the dental crown by adopting resin, and the sleeve (2), the arch wire bracket (3) and the arch wire (4) are connected into a whole; after curing, the whole body is separated from the tooth model (5) to form a transfer guide plate (6) with an arch wire bracket (3) and an arch wire (4);
seventhly, placing the prepared transfer guide plate (6) into the mouth, and adjusting the transfer guide plate (6) to enable the dental crown indentation to be aligned with and inosculated with the dental crown; then implanting an anchorage nail (7) at the hard palate part, and ligating and fixing the arch wire bracket (3);
eighthly, taking down the transfer guide plate (6), cutting the connecting rod (31) of the arch wire bracket (3), taking down the transfer guide plate (6), leaving the arch wire (4) and the anchoring frame (33) of the arch wire bracket, and enabling the arch wire (4) to be the correcting target position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010149100.6A CN113349956A (en) | 2020-03-06 | 2020-03-06 | Positioning device and transfer positioning method for tooth correction target |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010149100.6A CN113349956A (en) | 2020-03-06 | 2020-03-06 | Positioning device and transfer positioning method for tooth correction target |
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| CN106644220A (en) * | 2016-11-30 | 2017-05-10 | 浙江工业大学 | Multi-degree-of-freedom deformation simulation-based arch wire restoring force measurement method and device |
| CN212066904U (en) * | 2020-03-06 | 2020-12-04 | 陈启锋 | Positioning device for tooth correction target |
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2020
- 2020-03-06 CN CN202010149100.6A patent/CN113349956A/en active Pending
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|---|---|---|---|---|
| CN1613431A (en) * | 2004-11-30 | 2005-05-11 | 哈尔滨工业大学 | Simulator for friction force between denture groove and correction string |
| US20110097682A1 (en) * | 2007-10-31 | 2011-04-28 | H 32 | Method for producing a customised orthodontic device, and device produced in this manner |
| CN106644220A (en) * | 2016-11-30 | 2017-05-10 | 浙江工业大学 | Multi-degree-of-freedom deformation simulation-based arch wire restoring force measurement method and device |
| CN212066904U (en) * | 2020-03-06 | 2020-12-04 | 陈启锋 | Positioning device for tooth correction target |
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