CN110200721B

CN110200721B - Front tooth aesthetic diagnosis guide plate

Info

Publication number: CN110200721B
Application number: CN201910609994.XA
Authority: CN
Inventors: 孙迎春; 李莺; 李晓萌; 尤亚鹏; 李睿; 臧程程; 马士卿; 钟雪
Original assignee: STOMATOLOGICAL HOSPITAL TIANJIN MEDICAL UNIVERSITY
Current assignee: STOMATOLOGICAL HOSPITAL TIANJIN MEDICAL UNIVERSITY
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2024-02-23
Anticipated expiration: 2039-07-08
Also published as: CN110200721A

Abstract

The invention relates to an aesthetic diagnosis guide plate for front teeth. The device comprises a cuboid-shaped box-shaped shell, wherein a long shaft is arranged between two large rectangular front and rear plates of the shell, and two end parts of the long shaft are fixedly connected to bearings of the front and rear plates; the long shaft is fixedly connected with a large, medium, small and three width ratio gears and a width and length ratio gear; three long, middle and short racks which are horizontally arranged are respectively meshed with the large, middle and small width ratio gears in a relative manner, and one vertically arranged width-length ratio rack is meshed with the width-length ratio gear; in addition, three width ratio pointers are fixedly connected with the free ends of the long, medium and short racks, and one width ratio pointer is fixedly connected with the free ends of the width ratio racks; and a rotary button fixedly connected with one end of the long shaft outside the cuboid box-shaped shell. Compared with the prior art, the front tooth aesthetic diagnosis guide plate device is more visual through shooting comparison or doctor dictation, and the visibility is improved. Meanwhile, the gear can be adjusted in a stepless way according to a proportion in a certain range through four gear linkages.

Description

Front tooth aesthetic diagnosis guide plate

Technical Field

The invention belongs to a device for repairing teeth, and particularly relates to an aesthetic diagnosis guide plate for front teeth.

Background

With the increasing concern of people for oral health, the public's demand for aesthetics is also increasing. In particular, aesthetic problems caused by anterior teeth loss, defects, and misalignment often cause social disability and psychological anxiety in patients than posterior teeth loss, defects, and misalignment, resulting in urgent medical attention demands.

Meanwhile, since the judgment of the aesthetic appearance has a certain subjectivity, the judgment standard also varies from person to person, so that in order to realize the satisfactory aesthetic repairing effect of doctors and patients, the future aesthetic repairing needs to be expected through good doctor-patient communication and medical skill communication before the aesthetic repairing is carried out. The full and effective communication can be successfully realized, and the conflict of reworking of the prosthesis after the prosthesis is manufactured and even the doctor-patient after the oral wearing caused by the fact that the communication between the doctor-patient or the doctor-patient is not in place can be successfully avoided. In the aspect of realizing the doctor-patient communication of anterior teeth aesthetics, the prior art generally adopts an intraoral photographing mode and then uses a ruler to measure on a computer, and doctors explain the existing aesthetic problems to patients in the forms of orally describing the comparison, explanation and the like of the difference between the existing anterior teeth proportional relation standard value and the actual corresponding parameters in the mouth of the patients, so that the doctor-patient communication is realized. The medical technology communication is generally introduced by adopting the modes of providing pictures in the front teeth of the patient by doctors, preparing reference models and the like, so that technicians have a concept on the proportion problem of the front teeth of the patient and the expected aesthetic proportion of the front teeth of the prosthesis, and the prosthesis is manufactured according to the proportion problem. Although the transparent template for aesthetic diagnosis of front teeth (patent number CN 106361457) in the prior art can achieve the above effect, the transparent template with single or fixed size cannot achieve stepless adjustment due to the existence of clinical individual difference, so that the requirements of different front tooth widths of patients different from one person to another clinically are difficult to meet, and the flexibility and convenience are insufficient. Even if a series of transparent templates are manufactured according to different sizes, the operation is relatively complicated and inconvenient.

However, the prior art has problems in that: because of lack of visual reference objects in doctor-patient communication and medical technology communication, ambiguity and understanding deviation are easy to generate in communication, so that accuracy and efficiency of doctor-patient communication and medical technology communication are reduced. Transparent templates capable of achieving similar purposes lack flexibility and convenience. Therefore, an objective reference object which is flexible and convenient to operate is urgently needed in oral clinical diagnosis to realize quick and effective communication, and unified standards among doctors, patients and technicians are obtained before repairing design, so that the front teeth of the patients are better restored.

Disclosure of Invention

The invention provides the front tooth aesthetic diagnosis guide plate which is flexible, convenient and objective to operate and convenient for better restoring the beauty of the front teeth of a patient under the unified standard among doctors, patients and technicians, so as to solve the technical problems in the prior art.

The invention aims to solve the technical problems in the prior art, and adopts the technical scheme that the invention comprises a cuboid-shaped box-shaped shell, wherein a long shaft is arranged between two large rectangular front and rear plates of the shell, and two ends of the long shaft are fixed on the front and rear plates by bearings fixedly connected with the front and rear plates; four gears are fixedly connected to the long shaft, wherein the gears comprise three width ratio gears with large, medium and small widths and one width ratio gear; three long, medium and short racks which are horizontally arranged are respectively meshed with the large, medium and small width ratio gears in a relative manner, and one vertically arranged width-length ratio rack is meshed with the width-length ratio gear; the special-shaped shell is provided with a gear cavity which can just accommodate the four gears, the special-shaped shell also comprises a guide groove which just accommodates the three long, middle and short racks which are meshed with the three gears with large, middle and small width ratios and are horizontally arranged, and the special-shaped shell also comprises a guide groove which can just accommodate the vertically arranged rack with the width and length ratio which is meshed with the gear with the width and length ratio; the front plate and the rear plate of the cuboid box-shaped shell are fixedly connected to the special-shaped shell; the guide groove of the long, middle and short width ratio racks and the guide groove of the one width and length ratio rack extend out of the right side plate of the cuboid box type shell and the top plate of the cuboid box type shell respectively; in addition, three width ratio pointers which are fixedly connected with the free ends of the long, medium and short racks and can indicate the width ratio change of the anterior teeth of the upper jaw, and one width ratio pointer which is fixedly connected with the free ends of the width ratio racks and can indicate the width ratio change of the central incisors of the upper jaw; and a rotating button which is fixedly connected with one end part of the long shaft outside the cuboid box-shaped shell and is used for rotating the long shaft and driving the four gears to rotate.

The invention has the advantages and positive effects that: due to the adoption of the front tooth aesthetic diagnosis guide plate device, compared with the prior art, the front tooth aesthetic diagnosis guide plate device is more visual through shooting comparison or doctor dictation, and the visibility is improved. Meanwhile, the transparent template can be adjusted in proportion in a certain range through linkage of four gears, so that the transparent template has flexibility and convenience compared with a transparent template with a fixed size. The specific description is as follows:

1. visual and visual

Compared with the prior art, the method has the advantages that the method adopts the real object of the gear combination of the front tooth aesthetic diagnosis guide plate, has intuitiveness which is obvious through shooting comparison or doctor dictation, and enhances the visibility.

2. Electrodeless regulation and convenient operation

Compared with the template with fixed aesthetic proportion of the transparent template for the aesthetic diagnosis of the anterior teeth in the prior art, the invention drives the rack to generate proportional vertical displacement (indicating the width-to-length ratio of the incisors in the upper jaw) and horizontal displacement (indicating the width ratio of the anterior teeth in the upper jaw) through the linkage rotation of the concentric gears, and can effectively indicate the ideal anterior tooth edge position meeting aesthetic requirements through the pointer. Thereby the aesthetic parameters such as the width ratio of the anterior teeth of the upper jaw and/or the width and length ratio of the central incisors of the upper jaw which meet the aesthetic proportion are materialized/visualized, and the stepless adjustment can be realized, thereby meeting the requirements of individual differences of patients and the requirements of convenient operation of doctors.

Drawings

FIG. 1 is a schematic diagram of the internal structure of the device of the present invention;

FIG. 2 is a schematic view of the structure of the device of the present invention;

FIG. 3 is a schematic view of the cross-sectional A-A configuration of FIG. 2;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

fig. 5 is a right side view of fig. 2.

Detailed Description

For a further understanding of the nature, features, and efficacy of the present invention, the following examples are set forth in order to provide a further understanding of the invention, and are intended to be described in connection with the accompanying drawings:

as shown in fig. 1 and 3, three width ratio gears A1, A2, A3 which indicate the width ratio of the anterior teeth of the upper jaw and are coaxial and can rotate at the same angle, large, medium and small three horizontal racks A1, A2, A3 which are respectively meshed with the three width ratio gears A1, A2, A3, and pointers Z1, Z2, Z3 which are fixed at the free ends of the large, medium and small three horizontal racks A1, A2, A3 and are mutually perpendicular to the large, medium and small three horizontal racks A1, A2, A3. A pair of width-to-length ratio gears A1, A2 and A3 for indicating the width-to-length ratio of the incisors in the upper jaw are provided with a pair of coaxial width-to-length ratio gears A4 capable of rotating at the same angle, a vertical rack A4 meshed with the gears A4, and a pointer Z4 perpendicular to the rack A4.

The parameters of the gears are as follows:

(1) Determining the upper intermediate incisor width/length ratio:

as shown in fig. 1, according to the standard of the upper intermediate incisor crown width/length ratio of 0.78, since the radius of the gear A1 is 9.55 mm, the radius of the gear A4 is 12.24 mm. Therefore, when the gear rotates clockwise by an angle θ of 30 degrees, racks A1 and A4 engaged with gears A1 and A4 move horizontally rightward by 5 mm and vertically upward by 6.41 mm, respectively, under the drive of the gears; the racks a1 and a4 respectively drive the pointer Z1 to move horizontally from a position e1 pointing at 6 mm from the origin D to a position f1 pointing at 11 mm from the origin D, and at the same time, the pointer Z4 moves vertically from a position e4 pointing at 7.69 mm from the origin D to a position f4 pointing at 14.1 mm from the origin D.

(2) Determination of the ratio of the upper to the side incisor crown to the cuspid crown

As shown in fig. 1, when the pointer Z1 is moved a distance m from the original position according to the standard of 1.618/1/0.618 for the upper center incisor crown width/side incisor crown width/cuspid crown width, since the distance n by which the pointer Z2 is moved relative to the original position should be m/1.618+the distance m=1.618 m by which the pointer Z1 is moved; the distance o that the similar pointer Z3 moves relative to the original position should be m/1.618 x 0.618+the distance n=2m that the pointer Z2 moves. When the clockwise rotation angle of the gear is θ under the driving of the rotation knob, the distance of the pointer moving is the gear radius (θ/180), so the embodiment can be designed as follows: the radius of gear A1 is 9.55 mm, the radius of gear A2 is 15.45 mm, and the radius of gear A3 is 19.1 mm.

Specifically, according to the standards of 1.618/1/0.618 for the width of the maxillary central incisor crown/the width of the lateral incisor crown, when the pointer Z1 indicating the width of the maxillary central incisor crown moves by 5 mm, the values of the increase in the width of the maxillary lateral incisor crown and the width of the maxillary dental cuspid crown corresponding thereto are 3.09 mm and 1.91 mm, respectively. Therefore, the moving distance of the pointer Z2 is the sum of the moving distance of the pointer Z1 and the width of the maxillary incisor crown, and is 8.09 mm. Meanwhile, the moving distance of the pointer Z3 is the sum of the moving distance of the pointer Z2 and the width of the dental crown of the maxillary cuspid, and is 10 mm.

Thus, we can set the original positions to 6 mm, 3.71 mm and 2.29 mm for the mid-maxillary incisor crown width/side incisor crown width/cuspid crown width, and the corresponding pointers Z1, Z2 and Z3 indicate positions 6 mm (e 1), 9.71 mm (e 2) and 12 mm (e 3) from the origin D, respectively. When the gear rotates clockwise for 30 degrees, racks A1, A2 and A3 respectively meshed with the gears A1, A2 and A3 respectively move horizontally by 5 millimeters, 8.09 millimeters and 10 millimeters under the drive of the gears; the racks a1, a2 and a3 drive the pointer Z1 to move from the position (e 1) pointing at 6 mm from the origin D to the position (f 1) pointing at 11 mm from the origin D, and at the same time, the pointer Z2 moves from the position (e 2) pointing at 9.71 mm from the origin D to the position (f 2) pointing at 17.8 mm from the origin D, and the pointer Z3 moves from the position (e 3) pointing at 12 mm from the origin D to the position (f 3) pointing at 22 mm from the origin D.

The thin and thick dashed lines of the tooth shape to which the 4 pointers Z1, Z2, Z3, Z4 are commonly directed in fig. 1 represent schematic views of the initial and final shapes of the upper intermediate incisor crown, the side incisor crown, and the cuspid crown width and the upper intermediate incisor length before and after the movement of the 4 pointers Z1, Z2, Z3, Z4 from the origin D, respectively.

As shown in fig. 2, 3, 4 and 5, three width ratio gears A1, A2, A3 and one width ratio gear A4 are jointly fixed on one rotating shaft 3 and sleeved in the gear cavity of the special-shaped shell 2. The three horizontal racks A1, A2, A3 and one vertical rack A4 are respectively sleeved in the three horizontal rack guide rail cavities C1, C2 and C3 and one vertical rack guide rail cavity C4 of the special-shaped shell 2 and are respectively meshed with the three width ratio gears A1, A2 and A3 and one width-length ratio gear A4. Both ends of the rotating shaft 3 are fixed in bearings in the front and rear plates of a rectangular parallelepiped box-shaped casing 1. The front plate and the rear plate of the rectangular box-shaped casing 1 are fixed with the special-shaped casing 2 by screws or adhesion. The three horizontal rack rail cavities C1, C2, C3 extend out of the rectangular parallelepiped-shaped cassette housing 1 through the corresponding three holes in the right side plate of the rectangular parallelepiped-shaped cassette housing 1, and one vertical rack rail cavity C4 extends out of the rectangular parallelepiped-shaped cassette housing 1 through the corresponding one hole in the top plate of the rectangular parallelepiped-shaped cassette housing 1. One end of the rotating shaft 3 extending out of the front plate of the cuboid-shaped box-shaped shell 1 is also fixed with a rotating knob 4 for rotating the four gears A1, A2, A3 and A4.

In the use process, a doctor drives racks A1, A2, A3 and A4 to generate proportional displacement in the horizontal and vertical directions through the coaxial same-angle linkage rotation of four gears A1, A2, A3 and A4, and further indicates ideal anterior teeth proportion through corresponding pointers Z1, Z2, Z3 and Z4. Because the gears A1, A2, A3 and A4 rotate in a certain range, the racks and the pointers can be driven to be adjusted steplessly in the corresponding range. The adjusting mode can meet the individual difference of the proportion of teeth of a patient clinically in a larger range, and has more flexibility and convenience compared with a transparent template with fixed size which plays a similar role.

The invention prepares the gears A1, A2, A3 and A4 with the radius of corresponding proportion according to the most common aesthetic parameters of the anterior teeth (such as the width proportion of the anterior teeth and the width and length proportion of the central incisors of the upper jaw). Because the gears are coaxial, when the four gears A1, A2, A3 and A4 synchronously rotate, the corresponding racks A1, A2, A3 and A4 are driven to horizontally and vertically displace according to the corresponding proportion. The pointers Z1, Z2, Z3, Z4 fixedly connected with the racks a1, a2, a3 and a4 indicate the positions which are in accordance with the aesthetic proportion to the teeth. The practitioner can evaluate whether the patient's existing anterior proportion meets aesthetic requirements based on the indication of the aesthetic diagnostic template device and thereby facilitate visual interpretation of the aesthetic effects and improvements to the patient or technician.

When the device is used in a mouth, the four coaxial gears A1, A2, A3 and A4 are rotated to enable the pointer Z1 to coincide with a tangent line of the far middle edge of the middle incisor of the upper jaw, and at the moment, the pointers Z2 and Z3 respectively indicate the positions of the ideal tangents of the far middle edges of the upper jaw side incisor and the cuspid according to the width ratio aesthetic ratio of the front teeth of the upper jaw; and pointer Z4 indicates the position of the neck-border tangent of the ideal mid-maxillary incisors that corresponds to the aesthetic ratio of the mid-maxillary incisors to the width to length ratio.

Claims

1. An anterior aesthetic diagnostic guide plate, characterized in that: the device comprises a cuboid-shaped box-type shell, wherein a long shaft is arranged between two large rectangular front and rear plates of the shell, and two ends of the long shaft are fixed on the front and rear plates by bearings fixedly connected with the front and rear plates; four gears are fixedly connected to the long shaft, wherein the gears comprise three width ratio gears with large, medium and small widths and one width ratio gear; three long, medium and short racks which are horizontally arranged are respectively meshed with the large, medium and small width ratio gears in a relative manner, and one vertically arranged width-length ratio rack is meshed with the width-length ratio gear; the special-shaped shell is provided with a gear cavity which can just accommodate the four gears, the special-shaped shell also comprises a guide groove which just accommodates the three long, middle and short racks which are meshed with the three gears with large, middle and small width ratios and are horizontally arranged, and the special-shaped shell also comprises a guide groove which can just accommodate the vertically arranged rack with the width and length ratio which is meshed with the gear with the width and length ratio; the front plate and the rear plate of the cuboid box-shaped shell are fixedly connected to the special-shaped shell; the guide groove of the long, middle and short width ratio racks and the guide groove of the one width and length ratio rack extend out of the right side plate of the cuboid box type shell and the top plate of the cuboid box type shell respectively; in addition, three width ratio pointers which are fixedly connected with the free ends of the long, medium and short racks and can indicate the width ratio change of the anterior teeth of the upper jaw, and one width ratio pointer which is fixedly connected with the free ends of the width ratio racks and can indicate the width ratio change of the central incisors of the upper jaw; and a rotating button which is fixedly connected with one end part of the long shaft outside the cuboid box-shaped shell and is used for rotating the long shaft and driving the four gears to rotate.