KR20060043928A - Tooth preparation by outer guidance - Google Patents

Abstract

The present invention is an invention in which a dentist provides a procedure for deleting and matching teeth in the oral cavity by inducing the intraoral device outside the oral cavity without directly using the dental treatment device in the oral cavity of the patient.

The U-shaped frame and the U-shaped frame can be freely fixed inside the oral anatomical structure and the imprinted model (hereinafter referred to as the model) to be positioned on the same plane and fixed at a position that results in double symmetrical movement. A movable attachment structure, a device for fixing the U-shaped frame in the oral cavity and a model (hereinafter referred to as a working model), and a device in which two handpieces are connected to perform the same exercise (hereinafter referred to as a handpiece composite), The device connects the U-shaped frame on the same plane and at the same time induces the handpiece to be three-dimensionally deleted. Apparatus and treatment method which allow the handpiece inside to delete the teeth in the oral cavity depending on the movement The.

Tooth removal, handpiece, induction removal

Description

Tooth preparation by outer guidance}

1 connected Oblique view of the whole invention

Figure 2 seen from above

Figure 3 seen from below

4, 5, 6, 7 are different side structure diagrams

8 is a structure diagram separated U-shaped frame

9 is a structural diagram of a small plate for fixing the U-shaped frame in the oral cavity

10 is a cross-sectional view of the small plate for fixing the oral U-shaped frame

11 is a view showing the principle of the third hand movement of the composite handpiece

12 shows a handpiece composite;

13 is a view of rotating the handpiece composite

14 U-shaped frame mounted on the oral cavity or model

Figure 15 is the appearance of the handpiece complex in the oral cavity and model

In dental surgery, dentists directly restore the teeth in the patient's mouth in the procedure of restoring the teeth after the removal of the teeth, such as prostheses (Cr & Br), preservative restorations (Inlay, onlay, etc.) and other laminates for aesthetic treatment. You should delete it.

With the patient lying on or sitting in the dental chair, the dentist (the surgeon) is placed near the patient's head using a luminaire attached to the dental chair or a lighting device attached to the handpiece. The tooth should be removed either by looking directly at the camera or by using a dental mirror to view the reflected image. The narrow, dark environment inside the oral cavity makes it difficult for the operator to reach the instrument and provides difficulty in securing vision. In addition, precise and delicate operations and techniques are required to avoid harming adjacent tissues around the object to be deleted. Narrow oral conditions in the oral cavity may result in inaccurate deletion or injuries to adjacent tissues and may cause mental and physical stress with the operator.

The present invention is to solve the above-described problems and in the oral cavity outside the oral cavity

It is a device that provides a way to remove oral teeth by manipulating the handpiece.

The cusps, cutting edges, or cutting planes of three teeth (more teeth, if necessary) determine one plane, a device for fixing the formed plane to a U-shaped frame shaped like an arch, and replicating the anatomical structures in the oral cavity. The U-shaped frame, which is located in the same plane as described above, is composed of another U-shaped frame, a handpiece complex in which two handpieces are connected, and a device connecting two U-shaped frames. The piece complex consists of a device that allows three-dimensional movement. The handpiece includes a high speed handpiece, a low speed handpiece, and a polishing tool for polishing. It is also possible to input a three-dimensional shape of a pre-deleted tooth model into a computer and attach a mechanism that operates based on the information.

Referring to the specific examples based on the drawings as follows.

Impression Acquisition and Cloning Model Creation and Tooth Deletion

When the impression is taken, the tissue around the tooth to be deleted is accurately obtained using an impression material having excellent micropart reproducibility. Delete the appearance of abutment based on exactly popular appearance. In most cases, the ocular appearance with gingival margin is indicated. To remove a gingival margin, the impression must be taken by gingivating the gingiva.

In most cases, the col region between the interdental papillas does not appear when the impression is taken, but it is relatively contraindicated when the appearance of col cannot be predicted at all or even when the extension line of the col adjacent marginal gingiva meets. After all, the margin of gingival around the tooth to be deleted is the best indication for the use of the present invention, and if the appearance of the gingival of col area can be expected sufficiently, it can be said to be a relative indication. An example would be an abutment with a large loss of interdental papilla and a large interdental space. Also included are partial overlying prostheses that are not fully overlying prostheses.

The abutment removal of the model can be achieved by fixing the model in the dental surveyor, deleting it with the tapered bur while keeping the axis in line with the direction of the removal bur and the long axis or insertion of the tooth. . In addition, if the bur is drilled to a certain depth and the index of the long axis of the bur is left, the long axis may be reproduced by inserting the bur of the handpiece into the hole when the tooth in the oral cavity is deleted.

Determination of the plane to which the U-shaped frame is attached

One unique plane is determined based on at least three points. In the oral cavity, three drip elements (tooth cusps, cutting edges, cutting edges and other cusps) are used to select one plane. The tooth to be treated is then excluded in determining points for plane determination. This plane is different from the occlusal plane. The occlusal plane may or may not be. Also, even if the occlusal plane is not determined, the determined plane induces the present invention such that the intraoral structure moves in parallel in the direction of movement belonging to the plane. However, when the number of the tooth to be deleted is large or continuous at a long distance, since the remaining teeth are small, it is difficult to determine the plane on which the U-shaped frame 1 is to be fixed. Therefore, the present invention is an indication that the tooth to be deleted has a small number or forms a short distance. The plane may be determined by a model obtained by replicating a patient's intraoral structure after taking an impression. The tooth to be in contact with the moving plate in the planar determination must be firmly in contact with at least one adjacent tooth, and the agitation should not be so severe that the U-shaped frame (1) cannot be fixed, and the interdental gap with the adjacent tooth is defined by the wedge 6a. There must be enough space to be inserted. When the above conditions are met, the wedge is inserted into the interdental cavity and the wedge lift screw 4 is adjusted so that the contact portion of the tooth can be firmly pinched between the wedge and the moving plate 3.

Secure the U-shaped mold to the oral arch

When the plane on which the U-shaped frame 1 is to be determined is determined, the moving plate 3 is moved inside the U-shaped frame to each of the three pointed portions to move to the position where the tooth can be contacted. The width of the moving plate is wide enough to contact the cusps of the teeth and allow the wedge to be inserted between the tooth voids. When positioning the U-shaped frame, adjust the wedge screw 6 sufficiently to move away from the interdental gap so that the wedge 6a does not interfere with the U-shaped frame in the plane. If the oral cavity is narrower than the average person, the length of the wedge screw 6 is selected to be appropriate. Once the moving plate 3 is moved above the contact tooth, the moving plate 3 is precisely adjusted so that the wedge is in the correct position where it can be inserted into the interdental gap. Tighten the wedge screw (6) so that the wedge passes through the interdental space below the contact point. Thereafter, the wedge lifter moves the wedge in the direction of the occlusal surface through the wedge lifter screw so that the tooth can be firmly fixed between the wedge and the moving plate. In this way, the U-shaped frame is fixed to the oral arch.

Fix to model of U-shaped frame

Fix it to the model in the same way that the U-shaped frame is fixed in the oral cavity. In this case, the interdental cavity will be firmly different from the oral cavity, so the wedge should be formed in advance. The size of the interdental pores will not cause a big problem for the moving plate to be fixed to the U-shaped frame as long as the wedge does not escape in the direction of the occlusal surface and only a solid fixation can be obtained. Eventually you will get a plane that is the same as the plane formed by the oral anatomy. However, the model and the U-shaped frame are not fixed firmly. This is because, after connecting the intraoral U-shaped frame and the extraoral U-shaped frame, the position of the model must be finely adjusted to place the intraoral structure and the structure on the model at the line symmetry position.

Mounted on U-shaped frame connecting block of U handpiece composite

The intraoral handpiece 12 head and the four or more wires 16 and 17 on the side of the oral handpiece 13 to guide the handpiece head to the same movement. At this time, the connection portion connecting the wire rod and the handpiece head is made of a rotatable pin-shaped connecting device (19, 20). Only rotation is possible, no other movement. Only then can the two handpiece heads move in the same direction without error. The hand piece connection has the same structure as in FIG. 12, so that when the extraoral hand piece rotates to the sagittal cross section, the upper wire 16 and the lower wire 17 move in different directions, and the gap is narrowed, and the intraoral hand piece is narrowed. The head also does the same tilting motion. Therefore, the long axis of Bur moves in the same direction. In FIG. 11, the hand piece suture is moved back and forth by the wire guide pipe 18 which keeps the handpiece connecting lower wire 17 back and forth on both sides of the handpiece. Therefore, the two handpieces move in the same direction and the same amount of movement in the forward and backward directions. The intraoral hand piece is equipped with a removable bur 24 and the non-oral hand piece is equipped with a non-deleting bur 25 that only serves as a guide of the same specification. The bur should have no run out or small enough to be negligible after mounting. The bur exposed outside the hand piece should be long enough to allow for tooth removal and the same length should be exposed. This is because the amount of deletion must be the same. The handpiece composite translates the lower wire guide tube to which the lower wire 17 bearing can be smoothly flowed. The lower wire guide tube is connected by a shaft adjusting screw to be rotatable within a vertical point and a limited point. As shown in FIG. 13, the long axis of the Bur can be adjusted by converting the power within a limited range. The long axis of the bur is fixed through the shaft adjustment screw (10). This deformation of the Bur long axis is to be used when deleting the tilting tooth (tilting tooth). 11, the hand piece composite can have independent translational degrees in three directions. This can make it possible to delete teeth in three dimensions. The lateral movement block 7 is configured to allow only linear movement in the block 8 connecting the U-shaped frame. The vertical axis 9 also allows only vertical movement in the transverse block. The bearing is built in, so it can move smoothly and without great resistance. The parts are made so that there is no play in the play or deformation of the parts themselves so that both Burs move the same mass.

U-shaped frame connection

The intraoral U-shaped frame 1 and the U-shaped frame 2 with the U-shaped frame connecting block 8 are attached to each other by inserting the connection key 22 into the connection key hole 23. Likewise, the U-shaped frame connecting screw is locked to the stage just before fixation.

Model structure adjusts to oral structure in parallel

Intra-oral U-shaped frame (1) is attached to the oral U-shaped frame (2) in the oral cavity and the intraoral handpiece 12 is placed in the oral cavity Bur (24) and the oral cavity attached to the oral handpiece Bur (25) attached to the handpiece (13) is used to keep the oral anatomical structure and the anatomical structure of the model at the same distance. In other words, the bur's leading distance of the handpiece composite is fixed and constant, so the bur is used as a caliper. In other words, the sharp attachment of Bur is inserted into the fixed recognition point of the tooth in the oral cavity, for example, the posterior part of the molar, the centrifugal and the central fovea, so that the intraoral structure and the model structure are all at the same distance. Since the U-shaped frame was originally manufactured to be coplanar at the time of thermal cracking, the plane formed by three points in the oral cavity and the plane formed by three identical points in the model are eventually located in one plane. Also, using the handpiece composite as a caliper, the intraoral structure and the model structure are located at the same distance, and then tighten the wedge lifting screw (4) on the U-shaped connecting screw and the extra-oral U-shaped frame to Let the device invented be fixed. This will result in the intraoral structure moving in parallel on the plane of the U-shaped frame.

Removal of Oral Teeth Using Handpiece Complexes

As shown in FIG. 15, the previously deleted abutment existing in the model is used as a guide surface to delete the tooth in the oral cavity. The non-cutting bur (25) attached to the extraoral handpiece is spaced apart as it is erased on the outer surface of the tooth on the model. At the initial point, the deleting bur (24) mounted on the intraoral handpiece begins to delete the tooth. Once removed by the amount of non-deletion Bur (25) of the extraoral handpiece will be in contact with the tooth surface in the model. If the non-cutting bur of the extraoral handpiece continues to move in contact with the surface of the tooth in the model, the intraoral tooth will be removed in the shape of the tooth in the model. When adjusting the long axis of Bur, it is as follows. In the front-rear direction, that is, the posterior direction in the posterior direction, the snow direction in the anterior portion will be inclined in the desired direction if the in-oral handpiece is inclined in the desired direction as shown in FIG. In addition, the longitudinal direction in the lateral direction, that is, the narrowing in the posterior part and the palatal direction anterior part has a structure as shown in FIG. If necessary, a fixing device for fixing the long axis can be maintained. As a result, the axial wall angle of the prosthesis can be maintained at 6 degrees, and the holding force can be largely obtained. As a method of protecting the surrounding tissue during the removal process, it is possible to add a structure to isolate the buccal mucosa and the tongue outside the U-shaped frame or to use the gingival depressor to protect the marginal gingival. There is also a method of isolating adjacent teeth with a thin metallic film that can protect them.

1. Induction control of the oral cavity outside the oral cavity can overcome the difficulty of visual access and instrument reach.                     

2. Since the model has been deleted in advance, the temporary brass can be used in advance, and in some cases, the prosthesis and the conservative restoration can be manufactured in advance by indirect method without making the temporary brass.

3. The shape of the tooth to be deleted can be induced to be deleted as predicted shape in the model.

4. If the tooth of the model is removed by fixing it to the surveyor device based on the model that was taken by imprinting the patient's oral cavity prior to tooth removal, the long axis of the determined bur can be maintained and the long axis of the bur If the trace is left at a sufficient depth in any one part, the long axis can be reproduced by inserting a bur attached to the hand piece complex into the bur trace when the tooth in the oral cavity is deleted.

5. Deletion of teeth from the model The margin can be designed and precisely deleted, so the above invention can be used according to the desired design and treatment plan.

can do.

6. Prostheses that are difficult to form directly in the mouth such as 7/8 Crown and 4/5 Crown

The tooth of the replica model can be prepared by deleting it outside the oral cavity so that the shape of the prosthesis can be easily formed even in the oral cavity.

Claims (6)

A method of securing the invented frame or tooth-like base in such a manner as to determine the plane using three or more cusps of specific teeth and insert the wedge into the interdental cavity, if necessary. Method in which two planes determined by claim 1 are located on the same plane and connected, and then the two connected handpieces move the same distance in three dimensions in the same direction with respect to each plane. The device according to claim 2, wherein the two handpieces allow for independent translation in three directions and the axis to be changed at the same time. Method of fabrication before removal of temporary brass, prosthesis, Cr & Br, inlay, only Method of deleting tooth with a certain deletion axis with survayer device when deleting tooth from model; Reproducing the axis of bur used when deleting model by inserting the deletion axis into the trace by inserting the deletion axis into the model and using the same Computational input processing of pre-deleted tooth contours to guide the removal tool in the oral cavity using guided models other than oral cavity to automatically delete the tooth in the oral cavity and its treatment

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