JP3903228B2 - Aesthetic occlusal plane determination device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an aesthetic occlusal plane determination device for the purpose of producing as quickly and accurately as possible a prosthetic device that is aesthetically and functionally satisfactory in dentistry.
[0002]
[Prior art]
When the occlusal plane is collapsed in the patient's oral cavity and a new occlusal plane has to be set, the position of the maxillary dentition relative to the skull can be determined with the conventional face bow transfer, It was impossible to predict the patient's aesthetic factors for that position.
[0003]
In general clinical practice, it is considered necessary to determine an aesthetic occlusal plane that matches the lipline or smileline desired by the patient unless temporomandibular disorders and systemic indefinite complaints due to occlusal insufficiency are observed.
For example, as shown in FIGS. 7A, 7B, and 7C, the line connecting the interpupillary line and the left and right external auditory canals is not parallel (see FIG. 7). (See (a)), even if the upper arch of the articulator and the upper dentition are parallel, the upper dentition is misaligned in the patient's face and the aesthetic balance is not achieved. Further, even if the lines connecting both pupil lines and the left and right external auditory canals are parallel, the maxillary dentition may not be balanced in the patient's face (see FIG. 7B). Furthermore, when the line connecting both pupil lines and the left and right external auditory canals is not balanced with the facial appearance (see FIG. 7C), the midline must be determined and an appropriate occlusal plane must be set. In such a case, it is possible to analyze the aesthetic occlusal plane by taking a face bow transfer in consideration of facial features.
FIG. 16 shows the relationship among the Camper plane, the Frankfort plane, and the occlusal plane.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and in the operation of the conventional face bow transfer, (1) midline, (2) interpupillary line, (3) aesthetic occlusal plane or as required. (4) Face bow transfer is performed by adding the facial elements of the lip line. By adding such facial elements, it is possible to correct the misalignment from the middle of the articulator when the upper jaw model is often attached in the conventional facebow transfer. In the general clinical practice, this deviation is corrected by the surgeon through several trials in the oral cavity, and the final prosthetic device is manufactured. It is possible to know in advance by doing face bow transfer in consideration, so by considering the deviation and looking at the model on the articulator, clinical work is simplified and less trouble with the dental technician It is to provide an apparatus for determining an aesthetic occlusal plane.
[0005]
[Means for Solving the Problems]
An apparatus for determining an aesthetic occlusal plane according to the present invention is an arcuate shape in which a face bow is detachably attached to an upper arch of an articulator, and a rear reference point position can be adjusted up and down at a position near the earpiece of the face bow. In addition to providing an aesthetic occlusal plane determination wire, the pupil line bar is provided on the front side of the face bow via a fixture so that the angle of the pupil line bar can be adjusted, and the inclination of the articulator according to the inclination of the pupil line bar with respect to the horizontal. An articulator inclination adjusting leg for adjusting the angle is provided, and a midline rod capable of fine adjustment of the angle is attached to the front side of the face bow via a fixture .
[0008]
The apparatus for determining an aesthetic occlusal plane according to the present invention is a three-dimensional method by trimming so that the dentition of the upper jaw model attached to the articulator matches the aesthetic occlusal plane by the aesthetic occlusal plane determination wire. An aesthetic spherical plate attached to the mandibular arch of the articulator slides up and down to fit the aesthetic occlusal plane so that adjustment is possible, and the aesthetic spherical plate is brought into contact with the upper jaw model Is.
[0009]
Furthermore, in the apparatus for determining an aesthetic occlusal plane according to the present invention, the aesthetic spherical plate attached to the mandibular arch of the articulator so as to move up and down is formed with a Monson spherical curvature, or in addition to the Monson spherical curvature. It is formed on an aesthetic spherical plate with one or more types of spherical curvature different from the Monson spherical curvature according to the patient.
[0010]
[Action]
Occlusal diagnosis and determination of aesthetic occlusal plane (1) The case where the occlusal plane is determined in consideration of facial elements in the face bow transfer will be described.
1. A median line is drawn on the face using a seal or the like (see FIG. 8A).
2. The face bow is attached to the lower edge of the orbit by a normal method (Frankfurt plane) (see FIG. 8B).
3. Wear both pupil line bars according to the face (see FIG. 9A). Both pupil line bars are adjusted to both pupils or both external eye angles regardless of the inclination of the face bow.
4). A midline stick is attached to the face (see FIG. 9B). The midline bar should be mounted as close to the midline as possible. Fix the midline bar at a finely adjusted position. Normally, the midline bar and both pupillary bars are orthogonal or right-angled.
5). Positioning of the aesthetic occlusal plane (see FIGS. 10 (a) and 10 (b)).
The starting point of the aesthetic occlusal plane is set to the height of the lower edge of the orbit on the face bow, and the Kampel plane is set. However, the left and right starting points are adjusted and finely adjusted to a position in harmony with both pupil lines and the midline. That is, the right side of the posterior reference point position of the aesthetic occlusal plane determination wire shows a case where it is lowered from the lower edge of the orbit ( see FIG. 10B) , and the left side shows the case where the height of the lower edge of the orbit is determined ( FIG. a) see). Thus, an aesthetic occlusal plane in harmony with both pupil lines and the midline is determined. Therefore, it may not always coincide with the conventional Kampel plane, and is determined in consideration of the patient's face.
[0011]
(2) About attachment of the articulator to the model (1) The upper jaw model is attached to the articulator by the usual method (see FIG. 11).
(2) The lower jaw model is attached to the articulator at the intercuspal position (see FIG. 12).
(3) Adjusting the inclination of the articulator (vertical and horizontal) Correction of the inclination with respect to the midline and the binocular line (1) Adjust the height of the articulator.
(2) Confirm the position of the articulator with respect to the horizontal plate (see FIG. 13 (a)).
(3) Adjust by leveling so that the patient's midline is vertical. That is, the articulator is tilted so that the patient's midline bar provided separately from the midline bar of the articulator is vertical (see FIG. 13B).
(4) Naturally both pupil lines (both pupil line bars) are also suitable.
[0012]
(4) Reproduction of the aesthetic occlusal plane on the articulator (1) Remove the upper jaw model and the bite fork.
(2) An aesthetic spherical plate and an articulator leg are prepared, and the aesthetic spherical plate and the articulator leg are attached to the articulator.
(3) Transfer the aesthetic occlusal plane on the face to the articulator.
(4) The right side of the patient is lower than the position of the ear canal (see FIG. 10 (a)). The position on the articulator is lowered accordingly.
(5) The left side of the patient is the same as the position of the ear canal (see FIG. 10B). The position on the articulator shall be the same position.
(6) Three-dimensionally adjust the aesthetic spherical plate attached to the mandibular arch of the articulator to the aesthetic occlusal plane with respect to the aesthetic occlusal plane determined by the aesthetic occlusal plane determination wire. , Match (see FIG. 14).
The aesthetic spherical plate is lowered vertically (see the solid line in FIG. 14) from the state where the aesthetic spherical plate is aligned with the aesthetic occlusal plane (see the imaginary line in FIG. 14).
The curvature of the aesthetic spherical plate is usually a Monson spherical curvature, but depending on the patient, it may not match the Monson spherical surface. Prepare and use.
[0013]
(7) Analysis of current occlusal plane and adjustment Check that the occlusal plane is in relation to the aesthetic occlusal plane.
After the three-dimensional adjustment of the aesthetic spherical plate to match the aesthetic occlusal plane, the aesthetic spherical plate is slid downward (see FIG. 14). An upper jaw model is attached to the articulator, and the aesthetic spherical plate is slid up and lifted upward so as to approach the model so as to contact the model. As a result, as shown in FIG. 15, the anterior tooth portion where the right molar is protruding is shortened due to wear. Therefore, the right molar is adjusted to be harmonious with the aesthetic occlusal plane.
The use of an aesthetic spherical plate creates a harmonious plane with respect to the aesthetic occlusal plane.
(8) Check for an incongruent mandibular molar with respect to the maxillary plane in harmony with the aesthetic occlusal plane. Adjust the lower jaw occlusal plane.
(9) Perform expected wax-up.
Perform diagnostic wax-up on the adjusted upper and lower dentition models.
[0014]
To summarize the above results, today, most prosthetic devices are manufactured by cooperation between dentists and dental technicians. In particular, in the TM crown system, there are many parts that depend on a dental technician, and therefore, it is necessary to convey more and more patient information correctly.
The dentist uses a semi-adjustable articulator, and at the same time as positioning the upper jaw model, inputs information that makes the facial image appear in the facebow transfer, and supplies the dental technician with easier-to-create data is required. This kind of face bow transfer is more important than ever.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a face bow. Reference numeral 2 denotes an earpiece provided at one end of the face bow 1, which is inserted into the patient's ear canal to determine an average condylar point (back reference point) and determine a horizontal reference plane. The face bow 1 records the positional relationship between the maxillary dentition or the ridge and the mandibular head (condylar head) on the living body, and reproduces this as the positional relationship between the maxillary arch of the articulator and the condylar sphere. It is a device to be used.
[0016]
The face bow 1 is detachably attached to the upper arch 4 of the articulator 3. Reference numeral 5 denotes an aesthetic plane determining wire having an arcuate shape with one end side 5a attached to a position near the earpiece 2 of the face bow 1. A wire reference hole 7 is provided in the level adjusting plate 6 so that the rear reference point position of the aesthetic occlusal plane determining wire 5 can be adjusted up and down around the position of the ear canal. The curved portion distal end 5b of the aesthetic occlusal plane determining wire 5 is supported by the aesthetic occlusal plane positioning rod 8 via the fixture 9. The aesthetic occlusal plane may coincide with the Camper plane (Kampel plane), which is the plane that includes the lower edge of the ear canal and the lower nasal wing in a living body. In consideration of the fact that there is, there is a name that emphasizes so-called patient-centered aesthetics.
[0017]
A pupillary bar 10 is provided on the front side of the face bow 1 via a fixture 11 so that the angle can be adjusted. The pupil line bar may be either a strip plate or a rod. A plate-like thing is good. In this example, the case of a strip shape is shown. The pupil line bars 10 are connected to each other by an angle adjusting portion by a sphere and a spherical hole portion into which the sphere is fitted so that the angle adjustment can be freely performed. Both pupil line bars 10 are adjusted to the patient's both pupils or both external eye angles regardless of the inclination of the face bow 1. When both pupillary bars 10 are attached to the articulator 3, the articulator tilt is adjusted to adjust the tilt angle below the articulator 3 in order to level the tilted pupillary bars 10 on the articulator 3. An adjustment leg 12 is provided.
[0018]
Reference numeral 13 denotes a midline rod mounted on the front side of the face bow 1 so that the angle can be finely adjusted via a fixture 14. A midline is drawn on the patient's face using a seal or the like, and the midline bar 13 is aligned while adjusting the angle to the midline. Normally, both pupil line bars 10 and the midline bar 13 are orthogonal or perpendicular.
[0019]
An aesthetic spherical plate 15 that slides up and down is attached to the lower arch 16 of the articulator 3 so that it can move up and down. The aesthetic spherical plate 15 is supported by a sphere and a spherical hole that fits the sphere so that the aesthetic occlusal plane 15 can be adjusted three-dimensionally to match the aesthetic occlusal plane by the aesthetic occlusal plane determining wire 5. ing. When the upper jaw model 17 is attached to the articulator 3 and the aesthetic spherical plate 15 is attached to the lower jaw arch 16 of the articulator 3, an articulator leg 18 is further attached to the lower leg of the articulator 3 and the aesthetic spherical plate is attached. 15 so that it does not get in the way of the vertical movement operation.
[0020]
The aesthetic spherical plate 15 has a Monson spherical curvature, or in addition to the Monson spherical curvature, an aesthetic spherical plate having one or a plurality of types of spherical curvatures different from the Monson spherical curvature is provided in accordance with the patient. In this way, the use of the aesthetic spherical plate 15 tailored to the patient's face facilitates trimming of the dentition of the upper jaw model and correction of the misalignment from the middle of the articulator, taking into account the patient's aesthetic factors. Prosthesis placed in can be made.
[0021]
【The invention's effect】
As can be seen from the above description, the aesthetic occlusal plane determining device according to the present invention has a face bow detachably mounted on the maxillary arch of the articulator, and a position of the rear reference point at a position near the earpiece of the face bow. Is provided with an arch-shaped occlusal plane determination wire that can be adjusted up and down, and both pupil line bars are provided on the front side of the face bow via a fixture so that the angle of the pupil lines can be adjusted, An articulator inclination adjustment leg for adjusting the inclination angle of the articulator according to the inclination is provided, and a midline bar capable of fine adjustment of the angle via a fixture is attached to the front side of the face bow. since, Ri innovative device der of aesthetic occlusal plane considering aesthetic elements of the patient can be readily determined, and not be a horizontally interpupillary line of the patient, pupil interpupillary line of the patient Align the line bars, The articulator can also be tilted correspondingly, and from this aspect, the aesthetic occlusal plane can be easily determined in consideration of the aesthetic factors of the patient, and the aesthetic occlusal plane can be determined comprehensively. .
[0024]
Further, in the determination apparatus aesthetic occlusal plane according to the present invention, teeth of the upper jaw model that was attached to the articulator, tertiary according trimmed to match the aesthetic occlusal plane according to the aesthetic occlusal plane determined wire An aesthetic spherical plate attached to the mandibular arch of the articulator slides up and down to fit the aesthetic occlusal plane so that the original adjustment is possible, and the aesthetic spherical plate contacts the upper jaw model. since it was decided to contact the aesthetic spherical plate match the aesthetic occlusal plane on the articulator corrected portion of the model teeth by abutting the upper jaw model can be quickly grasped, overall to the patient An aesthetic occlusal plane can be determined.
[0025]
In addition, since the aesthetic spherical plate is formed to have a Monson spherical curvature, or in addition to the Monson spherical curvature, it is formed to an aesthetic spherical plate having one or more types of spherical curvatures different from the Monson spherical curvature in accordance with the patient. Furthermore, a prosthesis suitable for the patient's facial appearance can be created.
[0026]
In the present invention, (1) midline, (2) interpupillary line, (3) aesthetic occlusal plane or (4) lipline facial elements are added to the conventional face bow transfer operation. Thus, since the face bow transfer is performed, it is possible to correct the deviation from the midline of the articulator when the upper jaw model is often attached in the conventional face bow transfer. In addition, in the present invention, it is possible to know in advance by performing face bow transfer taking into account the above facial elements, so the clinical work can be simplified by looking at the model on the articulator in consideration of the deviation. Troubles with the dental technician are reduced, and the determination of the aesthetic occlusal plane is facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view of an aesthetic occlusal plane determining wire according to the present invention mounted on a face bow.
FIG. 2 is a perspective view in which an aesthetic occlusal plane determining wire and both pupil line bars according to the present invention are respectively mounted on an articulator.
FIGS. 3A and 3B are schematic perspective views showing a state in which both pupil line bars are attached to the face bow so that the angle can be adjusted.
FIG. 4 is a perspective view in which an aesthetic occlusal plane determining wire, both pupil line bars, and a midline bar according to the present invention are respectively mounted on an articulator.
FIG. 5 is a perspective view of an aesthetic spherical plate according to the present invention mounted on an articulator.
FIG. 6 is an explanatory diagram when the curvature of the aesthetic spherical plate according to the present invention is changed.
FIGS. 7A, 7B, and 7C are explanatory diagrams showing a relationship among a maxillary dentition, a line between both pupils, and a lip line. FIG.
FIGS. 8A and 8B are explanatory diagrams when the occlusal diagnosis is performed and the plane to be engaged is determined. FIG. 8A shows the case where a midline is drawn on the face, and FIG. The case where it is attached to the lower edge is shown.
FIGS. 9A and 9B are explanatory diagrams when the occlusal diagnosis and determination of the occlusal plane are performed. FIGS. 9A and 9B show both pupil lines corresponding to both pupils or both outer eye angles regardless of the inclination of the face bow. The case where the bar is attached to the face is shown, and (b) shows the case where the midline bar is attached to the face.
FIGS. 10A and 10B are explanatory diagrams when the occlusal diagnosis and the plane to be engaged are determined, and FIG. 10A is the right side of the posterior reference point position of the aesthetic occlusal plane determination wire from the lower edge of the orbit (B) shows the case where the left side of the posterior reference point position of the aesthetic occlusal plane determination wire is determined as the height of the lower orbital edge.
FIG. 11 is an explanatory diagram in the case of determining occlusal planes for occlusion diagnosis, and shows a case where an upper jaw model is attached to an articulator by a conventional method.
FIG. 12 is an explanatory diagram in the case of determining occlusal planes for occlusion diagnosis, and showing a case where a lower jaw model is attached to an articulator at a cusp fitting position.
FIGS. 13A and 13B are explanatory diagrams for adjusting the inclination (vertical and horizontal) of the articulator, and FIG. 13A shows a case where the position of the articulator is confirmed with respect to the horizontal plate; b) shows the case where the articulator is tilted so that the midline bar of the patient provided separately from the midline bar of the articulator is vertical.
FIG. 14 three-dimensionally adjusts the aesthetic spherical plate attached to the lower arch of the articulator to the aesthetic occlusal plane with respect to the aesthetic occlusal plane determined by the aesthetic occlusal plane determining wire. In the explanatory diagram for matching, the case where the aesthetic spherical plate is lowered vertically (solid line) from the state where the aesthetic spherical plate is matched with the aesthetic occlusal plane (imaginary line) is shown.
FIG. 15 is an explanatory diagram showing the analysis and adjustment of the current occlusal plane, showing how the occlusal plane looks with respect to the aesthetic occlusal plane, and shows an aesthetic sphere so that it approaches the upper jaw model It is explanatory drawing which shows the case where a face plate is slid and lifted upwards and a dentition is adjusted so that it may touch a model.
FIG. 16 is an explanatory diagram illustrating a relationship among a Camper plane, a Frankfort plane, and an occlusal plane.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Face bow 2 Earpiece 3 Articulator 4 Maxillary arch 5 Wire for aesthetic occlusal plane determination 6 Level adjustment board 7 Wire locking hole 8 Positioning rod 9 Mounting tool 10 Both pupil line bar 11 Mounting tool 12 Articulator inclination adjustment leg 13 Middle Wire rod 14 fixture 15 aesthetic spherical plate 16 mandibular arch 17 maxillary model 18 articulator leg

Claims (3)

A face bow is detachably attached to the maxillary arch of the articulator, an arch-shaped occlusal plane determining wire having an arcuate shape whose rear reference point position can be adjusted up and down is provided at a position near the earpiece of the face bow and the face Both pupillary bars are provided on the front side of the bow via a fixture so that the angle of the pupillary bars can be adjusted, and an articulator inclination adjusting leg for adjusting the inclination angle of the articulator according to the inclination of the pupillary bars with respect to the horizontal is provided, and A device for determining an aesthetic occlusal plane, characterized in that a midline bar capable of fine adjustment of the angle is attached to the front side of the face bow via a fixture . The maxillary model dentition attached to the articulator can be adjusted in a three-dimensional manner by trimming to match the aesthetic occlusal plane with the aesthetic occlusal plane determining wire. 2. The aesthetic occlusal plane according to claim 1, wherein an aesthetic spherical plate attached to the slidable slides up and down to fit the aesthetic occlusal plane, and the aesthetic spherical plate is brought into contact with the upper jaw model. Decision device. The aesthetic spherical plate attached to the mandibular arch of the articulator so as to move up and down is formed to have a Monson spherical curvature, or in addition to the Monson spherical curvature, one or more kinds of spherical surfaces different from the Monson spherical curvature according to the patient 3. The aesthetic occlusal plane determining device according to claim 1 , wherein the aesthetic occlusal plane determining device is formed on an aesthetic spherical plate having a curvature.

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