Plane transfer device and plane determination method
By designing a simple structured plane transfer device, using arc-shaped transfer sheets and universal brackets, the problem of inaccurate determination of planes in full-mouth denture production is solved, and the precise overlap between jaw frame and planes on the gypsum model is achieved, and the production accuracy and quality of dentures are improved.
Patent Information
- Application Number
- CN202411823884.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-03-14
AI Technical Summary
During the production of full-mouth dentures, the process of determining the plane of 𬌗 is cumbersome and not accurate enough, which affects the wearing comfort and use effect of dentures.
A simple structure and easy operation are designed. The 𬌗 plane transfer device on the gypsum model is transferred to the jaw frame through a series of precise adjustment steps.
The precise overlap between the 𬌗 plane on the jaw frame and the 𬌗 plane on the gypsum model is achieved, which improves the production accuracy and quality of the full denture and simplifies the operation process.
Smart Images
Figure CN119606581A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of oral medicine, in particular to a dental plane shifter and a method for determining a dental plane using the dental plane shifter. Background Art
[0002] When making full dentures, how to determine the occlusal plane is a very important operation step. The occlusal plane here is a proprietary concept in the field of oral medicine. It refers to the contact surface of the upper and lower teeth in the occlusal state. However, since there are no native teeth in the patient's mouth at this time, there is no definite reference basis for this occlusal plane. It is very difficult to accurately determine the occlusal plane.
[0003] Theoretically, it is believed that the plane determined by the three points at half the height of the bilateral molar back pads and half the height of the central incisor midline is the intraoral posterior plane.
[0004] In order to determine this plane, dentists will use a jaw frame for auxiliary operations. In actual operations, the occlusal plane determined by the jaw frame needs to be accurately aligned with the occlusal plane on the plaster model. This process is called the transfer of the intraoral occlusal plane to the jaw frame.
[0005] Traditionally, the facebow and abutment are used to achieve the transfer of the posterior plane, but this method is cumbersome, and the final posterior plane is not accurate enough, which may affect the wearing comfort of the complete denture.
[0006] Some dentists will directly use the relevant data and records of the patient's maxillary teeth to transfer the jaw plane to the jaw frame. The problem with this method is that the determined jaw plane is not accurate enough.
[0007] If there is a deviation in the jaw plane, the complete denture made with it as a reference may have many problems: warping of the complete denture, loosening of the complete denture, excessive tenderness, etc. In severe cases, it may even lead to rapid absorption of the jawbone.
[0008] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention
[0009] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a jaw plane transfer device with simple structure, ingenious design and easy operation. It also discloses a method for using the jaw plane transfer device to determine the jaw plane on a plaster model and then transferring the jaw plane to a jaw frame.
[0010] The technical solution of the present invention is: a plane transfer device, characterized in that: the transfer device comprises a base 1, a universal bracket 2 is arranged on the base 1, and the free end of the universal bracket 2 is connected to the transfer device body 3,
[0011] The transfer device body 3 includes a connecting handle 4, the end of which is connected to the root of an arc-shaped transfer piece 6 through a connecting seat 5. The surface of the connecting seat 5 is provided with grooves, and the two ends of the arc-shaped transfer piece 6 are a first calibration point 7 and a second calibration point 8.
[0012] A method for determining a plane, characterized in that the method is carried out in the following steps in sequence: first, the connecting handle 4 of the transfer body 3 is inserted into the clamping claw of the universal bracket 2 and fixed, and the universal bracket 2 is adjusted so that the arc-shaped transfer sheet 6 on the transfer body 3 is in a horizontal state.
[0013] The plaster model 9 is fixed on the positioner 10, and the positioner 10 is adsorbed on the upper magnet of the jaw frame 11.
[0014] The universal bracket 2 is moved as a whole, so that the first calibration point 7 on the arc transfer piece 6 contacts the spherical plane groove 13 opened in the middle of the left column 12 of the mandibular frame 11. The arc transfer piece 6 is driven by the universal bracket 2 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state, until the second calibration point 8 contacts the left retromolar pad 14 on the plaster model 9. The positioner 10 is adjusted according to the horizontal height of the second calibration point 8 to ensure that the half point on the left retromolar pad 14 contacts the second calibration point 8, thereby determining the first point of the spherical plane.
[0015] Flip the arc transfer piece 6 180°, readjust the arc transfer piece 6 to a horizontal state, and then move the universal bracket 2 as a whole, so that the first calibration point 7 on the arc transfer piece 6 contacts the groove 13 on the right plane opened in the middle of the right column 15 of the jaw frame 11, and drive the arc transfer piece 6 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state through the universal bracket 2, until the second calibration point 8 contacts the right side of the molar back pad 14 on the plaster model 9, and adjust the positioner 10 according to the horizontal height of the second calibration point 8 to ensure that the half point on the right side of the molar back pad 14 contacts the second calibration point 8, thereby determining the second point of the plane.
[0016] The universal bracket 2 is moved as a whole, so that the first calibration point 7 on the arc transfer piece 6 contacts the groove 13 on the cutting guide column 15 of the jaw frame 11, and the arc transfer piece 6 is driven by the universal bracket 2 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state, until the second calibration point 8 contacts the midpoint line of the central incisor on the plaster model 9, and the positioner 10 is adjusted according to the horizontal height of the second calibration point 8 to ensure that the half point on the midpoint line of the central incisor contacts the second calibration point 8, thereby determining the third point of the plane.
[0017] After the above adjustment, the upper surface of the plaster model 9 coincides with the theoretical upper surface marked on the jaw frame 11, that is, the upper surface on the plaster model 9 is determined.
[0018] When adjusting the arc transfer sheet 6 to a horizontal state, use a ruler to measure the horizontal heights of the base of the connecting handle 4 and the two calibration points 7 on the arc transfer sheet 6 respectively. If the heights of the three measuring points are the same, the arc transfer sheet 6 can be considered to be in a horizontal state.
[0019] Compared with the prior art, the present invention has the following advantages:
[0020] The jaw plane transferor of this structural form has a simple structure, ingenious design and reasonable layout. It designs a special structure to address the problems existing in the traditional jaw plane determination process. By using this jaw plane transferor in combination with the method disclosed in the present invention, it is possible to conveniently, quickly and efficiently achieve the operation of accurately aligning the jaw plane on the jaw frame with the jaw plane on the plaster model (i.e., the process of transferring the jaw plane in the mouth to the jaw frame), thereby providing accurate parameters for the production of complete dentures, thereby improving the production accuracy and production quality of complete dentures.
[0021] At the same time, the manufacturing process of this flat plane transfer device is simple and the manufacturing cost is low. The process of flat plane transfer and determination is also relatively simple, and the operation is convenient and fast. Therefore, it can be said that this device and method have many advantages, and are particularly suitable for promotion and application in this field, and its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 Schematic diagram of the structure of the transfer device body in the embodiment of the present invention.
[0023] Figure 2 It is a schematic diagram of the structure of the base and the universal bracket in an embodiment of the present invention.
[0024] Figure 3 Schematic diagram of the use state of an embodiment of the present invention (main viewing direction).
[0025] Figure 4Schematic diagram of the use state of an embodiment of the present invention (viewed from above).
[0026] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 4 As shown: a plane transfer device, which includes a base 1 as a basis, a universal bracket 2 is arranged on the base 1, and a transfer device body 3 is connected to the free end of the universal bracket 2.
[0027] The transfer device body 3 includes a connecting handle 4, the end of which is connected to the root of an arc-shaped transfer piece 6 through a connecting seat 5. The surface of the connecting seat 5 is provided with grooves, and the two ends of the arc-shaped transfer piece 6 are a first calibration point 7 and a second calibration point 8.
[0028] A method for determining the plane of the transfer device using the above-mentioned plane of the transfer device is carried out in the following steps: first, the connecting handle 4 of the transfer device body 3 is inserted into the clamping claw of the universal bracket 2 and fixed, and the universal bracket 2 is adjusted so that the arc-shaped transfer piece 6 on the transfer device body 3 is in a horizontal state.
[0029] When adjusting the arc transfer sheet 6 to a horizontal state, use a ruler to measure the horizontal heights of the base of the connecting handle 4 and the two calibration points 7 on the arc transfer sheet 6. If the heights of the three measurement points are the same, it can be considered that the arc transfer sheet 6 is in a horizontal state.
[0030] Then fix the plaster model 9 on the positioner 10, and adsorb the positioner 10 on the upper magnet of the jaw frame 11, and the preparation work is completed;
[0031] The universal bracket 2 is moved as a whole, so that the first calibration point 7 on the arc transfer piece 6 contacts the spherical plane groove 13 opened in the middle of the left column 12 of the mandibular frame 11. The arc transfer piece 6 is driven by the universal bracket 2 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state, until the second calibration point 8 contacts the left retromolar pad 14 on the plaster model 9. The positioner 10 is adjusted according to the horizontal height of the second calibration point 8 to ensure that the half point on the left retromolar pad 14 contacts the second calibration point 8, thereby determining the first point of the spherical plane.
[0032] Flip the arc transfer sheet 6 180° (i.e., flip it to a state that is a mirror image of the state in the previous step), readjust the arc transfer sheet 6 to a horizontal state, and then move the universal bracket 2 as a whole, so that the first calibration point 7 on the arc transfer sheet 6 contacts the groove 13 on the right plane opened in the middle of the right column 15 of the mandibular frame 11, and drive the arc transfer sheet 6 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state through the universal bracket 2, until the second calibration point 8 contacts the right side of the molar back pad 14 on the plaster model 9, and adjust the positioner 10 according to the horizontal height of the second calibration point 8 to ensure that the half point on the right side of the molar back pad 14 contacts the second calibration point 8, thereby determining the second point of the plane.
[0033] The universal bracket 2 is moved as a whole, so that the first calibration point 7 on the arc transfer piece 6 contacts the groove 13 on the cutting guide column 15 of the jaw frame 11, and the arc transfer piece 6 is driven by the universal bracket 2 to swing with the first calibration point 7 as a fulcrum while maintaining a horizontal state, until the second calibration point 8 contacts the midpoint line of the central incisor on the plaster model 9, and the positioner 10 is adjusted according to the horizontal height of the second calibration point 8 to ensure that the half point on the midpoint line of the central incisor contacts the second calibration point 8, thereby determining the third point of the plane.
[0034] Since three points can determine a surface, the above three points can determine the theoretical 𬌗 plane in space.
[0035] After the above adjustment, the upper surface of the plaster model 9 coincides with the theoretical upper surface marked on the jaw frame 11, that is, the upper surface on the plaster model 9 is determined.
[0036] It should be noted that the positioner 10 and the jaw frame 11 used in the present method are both existing devices in the art.
Claims
1. A planar transfer device, characterized in that: The transfer device comprises a base (1), a universal bracket (2) is arranged on the base (1), and the free end of the universal bracket (2) is connected to the transfer device body (3). The transfer device body (3) comprises a connecting handle (4), the end of the connecting handle (4) is connected to the root of the arc-shaped transfer sheet (6) through a connecting seat (5), the surface of the connecting seat (5) is provided with engravings, and the two ends of the arc-shaped transfer sheet (6) are a first calibration point (7) and a second calibration point (8).
2. A method for determining a spherical plane, characterized in that: The method is carried out in the following steps: first, the connecting handle (4) of the transfer body (3) is inserted into the clamping claw of the universal bracket (2) and fixed, and the universal bracket (2) is adjusted so that the arc-shaped transfer piece (6) on the transfer body (3) is in a horizontal state. The plaster model (9) is fixed on the positioner (10), and the positioner (10) is adsorbed on the upper magnet of the jaw frame (11). The universal bracket (2) is moved as a whole, so that the first calibration point (7) on the arc transfer piece (6) contacts the slit plane groove (13) opened in the middle of the left column (12) of the jaw frame (11), and the arc transfer piece (6) is driven by the universal bracket (2) to swing with the first calibration point (7) as a fulcrum while maintaining a horizontal state, until the second calibration point (8) contacts the left side of the molar back pad (14) on the plaster model (9), and the positioner (10) is adjusted according to the horizontal height of the second calibration point (8) to ensure that the half point on the left side of the molar back pad (14) contacts the second calibration point (8), thereby determining the first point of the slit plane. The arc transfer piece (6) is flipped 180°, and the arc transfer piece (6) is readjusted to a horizontal state. Then, the universal bracket (2) is moved as a whole, so that the first calibration point (7) on the arc transfer piece (6) contacts the groove (13) of the right plane opened in the middle of the right column (15) of the jaw frame (11). The arc transfer piece (6) is driven by the universal bracket (2) to swing with the first calibration point (7) as a fulcrum while maintaining a horizontal state, until the second calibration point (8) contacts the right side of the molar back pad (14) on the plaster model (9). The positioner (10) is adjusted according to the horizontal height of the second calibration point (8) to ensure that the half point on the right side of the molar back pad (14) contacts the second calibration point (8), thereby determining the second point of the plane. The universal bracket (2) is moved as a whole, so that the first calibration point (7) on the arc transfer piece (6) contacts the groove (13) on the cutting guide column (15) of the jaw frame (11), and the arc transfer piece (6) is driven by the universal bracket (2) to swing with the first calibration point (7) as a fulcrum while maintaining a horizontal state, until the second calibration point (8) contacts the midpoint line of the central incisor on the plaster model (9), and the positioner (10) is adjusted according to the horizontal height of the second calibration point (8) to ensure that the half point on the midpoint line of the central incisor contacts the second calibration point (8), thereby determining the third point of the plane. After the above adjustment, the upper surface of the plaster model (9) coincides with the theoretical upper surface marked on the jaw frame (11), that is, the upper surface of the plaster model (9) is determined.
3. The method for determining the spherical plane according to claim 2, wherein: When adjusting the arc-shaped transfer sheet (6) to a horizontal state, the horizontal heights of the base of the connecting handle (4) and the two calibration points (7) on the arc-shaped transfer sheet (6) are measured using a ruler. If the heights of the three measurement points are the same, the arc-shaped transfer sheet (6) can be considered to be in a horizontal state.