KR101478720B1 - Guide device of dental drill and method for making stent - Google Patents

Abstract

Disclosed are a guide device of a dental drill and a method for producing a stent. The guide device of a dental drill of the present invention is a device for guiding a dental drill when removing a tooth and comprises: a slider coupled with a dental drill to be able to be attached and detached and having a rod formed therein to be horizontal with respect to a drill bit; and a stent coupled in the mouth when a tooth is removed, having a through-hole through which the drill bit passes without contact, and including a guide groove in which the rod is inserted to be able to move. A projection unit having a shape which is substantially the same as a state in which a tooth is completely removed is formed in the guide groove. By means of the present invention, the period until a final prosthetic appliance can be mounted on a tooth and the number of hospital visits a patient must make can be minimized. Even though an impression is not taken or a temporary prosthetic appliance is not produced, a crown or a bridge which fits in place of a removed tooth can be rapidly produced. A tooth covered with a crown or a bridge can be optimally removed, irrespective of the proficiency of the medical personnel.

Description

TECHNICAL FIELD [0001] The present invention relates to a guiding device for a dental drill and a method for manufacturing the same,

The present invention relates to a guiding device for a dental drill and a method for manufacturing the same, and more particularly, to a dental drill for a dental drill which can quickly produce a crown or a bridge that fits into a deleted tooth without impression or making a temporary prosthesis. And a method of manufacturing the stent.

Prosthetics refers to restoration of function by replenishing artifacts against a large substantial defect of the tooth in the dental area, or a reduction in oral function caused by a tooth defect or morphological abnormality.

If tooth decays or breaks due to tooth decay, tooth decay, or gum disease due to tooth decay, the prosthetic treatment will be used to restore the problematic tooth to its original shape.

Types of dental prosthesis are classified into fixed prosthesis and removable prosthesis. Fixed prosthesis is made of a structure that removes about one or two teeth when the tooth is missing, but when the tooth is damaged or broken and needs to be reinforced, it is necessary to make an artificial tooth. In the case of removable prosthesis, .

The types of fixed prostheses include crowns, bridges, resins, inlays, and amalgam. The crown is a prosthesis that uses gold or ceramics to cover the teeth after tooth nerve treatment to prevent the teeth from breaking. When the teeth are extracted with cavities or trauma, the bridge is used to shave off adjacent teeth on both sides. A prosthesis that connects an artificial tooth in the middle of a leg, and a resin, an inlay, and an amalgam are prosthesis that carves out a portion of a tooth due to cavities and fills it with resin, inlay, and amalgam.

The crown and bridge prosthetic treatment process is as follows.

First, remove the tooth as much as the space in which the prosthesis is inserted. When crowns and bridges are placed over existing teeth, they must not be more natural than the original natural teeth, thus removing the tooth enamel and dentin by the amount of crown or bridge. Tooth removal removes the space in which the prosthesis is to be mounted and gives the prosthesis maintenance force.

Then, impression taking and bite taking are performed, and a temporary crown is made.

Impression is the recording of the shape of the teeth and oral tissues required for dental treatment, such as restoration of teeth, prosthesis, etc., as a negative (negative) type. After reconstructing the present tooth condition as a model, a crown or a bridge is produced. The occlusion is reproduced as a model to confirm the occlusal state of the upper and lower teeth.

The temporary crown is covered until the final restoration is attached to the tooth that has removed the crown or crown. The temporary crown protects the teeth to be treated, prevents secondary infection, and prevents tooth movement until the final prosthesis is installed.

After making temporary crown, prosthesis such as crown or bridge will be made. The prosthesis is usually fabricated in a dental prosthodontic workshop. Once the crown or bridge has been fabricated, the permanently bonded cement is used to attach the prosthesis to the removed tooth.

However, as described above, since the crown and bridge prosthetic treatment process is divided into several stages, the patient has had to visit the hospital several times until the first prosthesis is installed, and the final prosthesis There is a disadvantage that it takes a long time to complete.

In addition, the state and form of the removed tooth to be covered by the crown or bridge are closely related to the bonding force between the tooth and the prosthesis, and the period during which the prosthesis can be used without being broken or broken. The crown or bridge is easily broken or easily broken when the tooth is removed by a medical person having low experience or proficiency.

In addition, the patient had to stay in temporary teeth for a few days or weeks before the final prosthesis was installed. Therefore, the patient was faced with aesthetic and functional inconvenience, and the medical staff and the patient were required to spend a long time in the procedure and waste of human and material resources due to multi- I had a problem to take care of.

It is an object of the present invention to quickly produce a crown or a bridge that fits in a missing tooth without having to make a temporary impression or make an impression, The present invention provides a guiding device for a dental drill and a method of manufacturing a stent, which are configured to remove a crown or a bridge covered by a bridge in an optimal form regardless of proficiency of a medical person.

This object is achieved according to the present invention by providing a device for guiding a dental drill at the time of tooth clearing, comprising: a slider detachably coupled to the dental drill, the slider being formed with a rod parallel to a drill bit; And a stent which is coupled to the oral cavity at the time of tooth removal and has a through hole through which the drill bit does not contact and a guide groove through which the rod is movably inserted, Wherein a protrusion having substantially the same shape is formed in the guiding device of the dental drill.

Wherein the rod includes: a coupling portion coupled to the slider; And an inclined portion extending from the coupling portion and having a circular cross section and decreasing in diameter toward the end portion.

The inclination angle of the inclined portion may be the same as the inclination angle of the drill blade.

The inner circumferential surface of the guide groove may be formed with an elastic pressure layer that presses the inclined portion toward the projection.

The guide groove may be formed on both sides of the through hole, and the rod may be formed on both sides of the drill blade.

Wherein the slider includes: a fixing part which is in close contact with a lower portion of a head of the dental drill and has a first engaging part formed along a circumferential direction around the drill blade; A rotatable portion rotatably coupled to the fixed portion about the drill bit and detachably coupled to the rod; And a fixed cap which is in close contact with an upper portion of the head of the dental drill and has a second engaging portion engaged with the first engaging portion.

A protective ring may be coupled to the inner circumferential surface of the through hole to limit the flow of the drill bit.

The above object can also be accomplished by an oral care method comprising: a mouth scan step of scanning a patient's mouth using a three-dimensional scanning device so that a three-dimensional drawing of a patient's mouth is generated; A virtual deletion step of performing a virtual tooth deletion in the three-dimensional drawing using a three-dimensional design program so that tooth deletion data to be covered by an ideal structure of a crown or a bridge is generated; And a stent manufacturing step of fabricating a stent by inputting the tooth deletion data into a three-dimensional printing apparatus, wherein the stent is provided with a through hole which is coupled to the oral cavity at the time of tooth deletion and through which the drill bit does not contact, And a protrusion having substantially the same shape as a state in which teeth are completely removed is formed on the inside of the guide groove.

According to the present invention, there is provided an oral care method comprising: an oral scan step of scanning a patient's mouth using a three-dimensional scanning device; A virtual deletion step of performing a virtual tooth deletion in a three-dimensional drawing using a three-dimensional design program; And a stent manufacturing step of fabricating a stent by inputting tooth deletion data to a three-dimensional printing apparatus. Thus, the period until the final restoration of the tooth is mounted on the tooth, the number of times the patient is visited is minimized, It is possible to provide a method of manufacturing a stent in which a crown or a bridge that fits tightly to a deleted tooth can be manufactured quickly without making a crown or a bridge and a tooth covered with a crown or a bridge can be removed in an optimal form regardless of proficiency of a medical person .

A slider detachably coupled to the dental drill and formed with a rod parallel to the drill bit; And a stent which is coupled to the oral cavity at the time of erasing the tooth and has a through hole through which the drill bit does not contact and a guide groove into which the rod is movably inserted, You can quickly create crowns or bridges that fit your missing teeth without having to minimize the number of patient visits, make impressions, or make temporary prostheses. You can also create crowns or bridges that are crown or bridge covered, It is possible to provide a guide device for a dental drill which can be removed in the form of a dental drill.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the entire configuration of a guide device for a dental drill according to an embodiment of the present invention; FIG.
Fig. 2 is a view showing a slider of a guide device of the dental drill of Fig. 1; Fig.
Fig. 3 is a sectional view showing the use state of the guide device of the dental drill of Fig. 1; Fig.
4 is a flowchart showing a method of manufacturing a stent according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

The guiding device and the method of manufacturing a stent of the present invention minimize the period of time until the final prosthesis is mounted on the teeth and the number of times the patient visits the patient, and are suitable for the removed tooth without making an impression or making temporary prostheses Crown or bridge can be made quickly, and crown or bridge-covered teeth can be removed in an optimal form regardless of proficiency of medical personnel.

2 is a view showing a slider of a guide device of the dental drill of FIG. 1; FIG. 3 is a view showing the guide of the dental drill of FIG. 1; FIG. FIG. 4 is a flowchart showing a method of manufacturing a stent according to an embodiment of the present invention. FIG.

The guiding device for a dental drill according to an embodiment of the present invention is constructed so that a crown or a bridge that fits in a deleted tooth can be manufactured quickly without taking an impression or preparing a temporary prosthesis. The slider 10 and the stent 30).

As shown in Figs. 1 and 2, the slider 10 is coupled to the head of the dental drill 2 and comprises a fixed portion, a rotating portion, a fixed cap, and a rod (R).

In the dental drill 2, a motor is built in the tip end portion of the drill housing, and the drill bit 2a is coupled to the underside thereof. Generally, the front end of the dental drill 2 is smoothly processed so that the surface of the housing is not damaged in the oral cavity.

The slider 10 has a structure for rotatably coupling the rod R to the head of the dental drill 2 and is configured to closely contact the lower portion of the head of the dental drill 2 and to move along the circumferential direction about the drill bit 2a A fixed portion 11 on which the first engaging portion C1 is formed, a rotating portion 13 rotatably coupled to the fixed portion 11 about the drill bit 2a and detachably coupled to the rod R, And a fixing cap 15 having a second engaging portion C2 which is in close contact with the upper portion of the head of the dental drill 2 and engages with the first engaging portion C1.

The fixing part 11 is formed in a cup shape with an opening on the upper side. A hole through which the drill bit 2a passes is formed on the bottom surface. A neck part connecting the head of the dental drill 2 and the handle is passed One side of the side surface is opened.

The fixed cap 15 is formed in the form of a substantially circular stopper.

When the fixed cap 15 is coupled to the upper side of the fixed portion 11 after the head of the dental drill 2 is inserted into the fixed portion 11 through the upper side of the fixed portion 11, And the fixed cap 15 press the head of the dental drill 2 in the vertical direction to form a binding force.

A first engaging portion C1 is formed on the upper circumferential surface of the fixing portion 11 in the circumferential direction and formed of a male thread. The inner surface of the fixed cap 15 is provided with a second engaging portion C2 Is formed.

As the fixed cap 15 rotates, the fixed cap 15 and the fixed portion 11 are connected to each other by the head of the dental drill 2, The upper side and the lower side of the dental drill 2 are pressed and fixed to the dental drill 2.

Of course, the coupling structure of the first coupling portion C1 and the second coupling portion C2 can be variously applied to the known coupling structure in addition to the threaded coupling. Although not shown, it is preferable that the outer circumferential surface of the fixed cap 15 is formed into a hexagonal shape so that a driver groove, a wrench groove, or a wrench is formed on the upper surface thereof to enable rotation through a tool such as a driver or a wrench .

The rotating portion 13 is formed in an annular shape and is rotatably coupled to the outer peripheral surface of the fixed portion 11. [ A step S on which the bottom surface of the fixing part 11 is seated is secured on the inner side of the rotary part 13 so as to prevent the rotation part 13 from being separated from the fixing part 11 by an external force in the direction of removal in using the dental drill 2 . Although not shown, a bearing can be coupled between the rotating portion 13 and the fixing portion 11 so that rotation is smoothly performed.

The extension portion 13a is a portion to which the rod R is engaged, and is formed on both sides of the rotation portion 13, respectively. The extension portion 13a is formed in a shape extending in the opposite direction to each other so that the rod R is engaged with the drill bit 2a at a constant distance from each other.

Preferably, the rod R is detachably coupled to the extended portion 13a, and the extended portion 13a is formed with grooves into which the rod R is securely fitted.

The rod R is inserted into the guide groove 33 of the stent 30 to remove the teeth T for crown or bridge mounting and is configured to guide the drill bit 2a while moving. And is coupled to the extended portion 13a in parallel with the blade 2a.

The rod R is coupled to the extension 13a and projects parallel to the drill bit 2a so that the rod R is inserted into the guide groove 33 when the tooth T is removed, (T) deletion is started.

The rod includes a coupling portion coupled to the slider and an inclined portion extending from the coupling portion. A detailed description of the inclined portion will be described later with a description of the stent.

As shown in FIG. 1, the stent 30 is configured to be coupled to the oral cavity when the tooth T is removed and to guide the drill bit 2a together with the slider 10, Through holes 31 through which the rods 2a pass and a guide groove 33 into which the rods R are movably inserted are formed.

The stent 30 is formed in such a shape as to surround surrounding teeth including a tooth T to be cleaved and a gum G covering the teeth T, And will guide the deletion depth.

As shown in Fig. 3, the through-hole 31 is formed on the upper side of the tooth T to be erased so that the erasure portion of the tooth T is exposed toward the interdental space. The through hole 31 is formed to be larger than the cut area of the tooth T viewed from the insertion direction of the drill blade 2a and the moving area of the drill blade 2a for the drill blade 2a, And the teeth T are deleted.

It is preferable that a protection ring 35 is coupled to the inner circumferential surface of the through hole 31. The protection ring 35 is made of a synthetic resin such as metal or light material to prevent the drill bit 2a from moving to a position different from the erasing position.

The guide grooves 33 are formed on both sides of the through holes 31, respectively. The guide groove 33 guides the pair of rods R which are formed on the inside and outside of the gum G on the basis of the gums G to which the stent 30 is coupled, do.

On the inner side of the guide groove 33, a protrusion 33a having substantially the same shape as that of the state in which the tooth T has been removed is formed.

The protrusion 33a is configured to guide the movement path of the rod R inserted into the guide groove 33 together with the inner circumferential surface of the guide groove 33. The rod R inserted into the guide groove 33 is inclined One side of the portion R2 is moved along the periphery of the projecting portion 33a in the inside of the guide groove 33 while maintaining contact with the projecting portion 33a.

The inclined portion R2 has a circular cross section and is formed in such a shape that its diameter decreases toward the end. The reason why the inclined portion R2 has a circular cross section is that the contact point between the inclined portion R2 and the projected portion 33a and the central axis of the inclined portion R2 are always located at all times even when the inclined portion R2 moves along the periphery of the projected portion 33a Since the tooth T is formed in such a shape that the cross-sectional area becomes smaller toward the end (to be inserted into the crown or the bridge), the inclined portion (R2) is formed to decrease in diameter toward the end, the tooth T is easily removed.

Preferably, the inclination angle of the inclined portion R2 is formed equal to the inclination angle of the drill bit 2a. Since the relative positions of the drill bit 2a and the inclined portion R2 of the rod R are always kept constant, the movement path of the drill bit 2a coincides with the movement path of the inclined portion R2, When the shapes of the drill bit 2a and the inclined portion R2 coincide with each other, the shape of the tooth T deleted by the drill bit 2a coincides with the shape of the protruding portion 33a.

3, an elastic pressing layer 33b is formed on the inner circumferential surface of the guide groove 33 to press the inclined portion R2 toward the protruding portion 33a.

When the contact point between the inclined portion R2 and the protruding portion 33a is formed on the upper side of the protruding portion 33a, the inclined portion R2 and the guide groove 33 May be spaced apart from each other, and the inclined portion R2 may be spaced apart from the projection 33a.

The elastic pressing layer 33b is made of a material having a large elastic modulus so that the inclined portion R2 is compressed or resiliently restored even if the contact point between the inclined portion R2 and the protruding portion 33a varies, 33a.

The elastic pressure layer 33b may be made of rubber, silicone, or synthetic resin, and may be adhered or coated on the inner circumferential surface of the guide groove 33. [

The conventional crown and bridge prosthesis treatment process is divided into several stages such as tooth removal, impression preparation, provisional tooth preparation, and final tooth preparation. Therefore, the patient is treated several times There was a disadvantage that it was necessary to visit the patient and it took a long time to complete the final prosthesis.

In addition, the state and form of the removed tooth to be covered by the crown or bridge are closely related to the bonding force between the tooth and the prosthesis, and the period during which the prosthesis can be used without being broken or broken. The crown or bridge is easily broken or easily broken when the tooth is removed by a medical person having low experience or proficiency.

In addition, the patient had to stay in temporary teeth for a few days or weeks before the final prosthesis was installed. Therefore, the patient was faced with aesthetic and functional inconvenience, and the medical staff and the patient were required to spend a long time in the procedure and waste of human and material resources due to multi- I had a problem to take care of.

The present invention solves the problems of the prior art as described above by manufacturing the stent 30 in advance by determining the tooth erasure form of the patient.

As shown in FIG. 4, the method for manufacturing a stent according to an embodiment of the present invention includes an oral scan step (S100), a virtual erasure step (S200), and a stent production step (S300).

The oral scan step (S100) is performed at the first visit of the patient. The patient's mouth is scanned using a three-dimensional (3D) scanning device, such as a three-dimensional computerized tomography, to generate a three-dimensional view of the patient's mouth.

In the virtual deletion step (S200), virtual tooth deletion is performed in a three-dimensional drawing using a three-dimensional design program to generate tooth deletion data to be covered with an ideal structure of a crown or a bridge. The clinician has the advantage of being able to repeatedly input the shape of the deleted tooth in a three-dimensional design program to closely examine the more idealized form of the deleted tooth.

In the stent production step (S300), the tooth deletion data is inputted to the three-dimensional printing apparatus to produce the stent (30). The protruding portion 33a formed in the guide groove 33 of the stent 30 is formed in the same shape as the ideal shape of the erected tooth (see FIG. 3). When the stent manufacturing step S300 is completed, .

The stent 30 is inserted into the oral cavity of the patient at the second visit of the patient and the rod R is inserted into the guide groove 33 of the stent 30, The tooth T is quickly erased via the drill bit 2a inserted into the teeth 31 of the tooth. When the final prosthesis preliminarily fabricated on the deleted tooth T is put on, the crown and bridge prosthetic treatment process is completed.

According to the present invention, an oral cavity scanning step (SlOO) for scanning a patient's mouth using a three-dimensional scanning device; A virtual deletion step (S200) of performing virtual tooth deletion in a three-dimensional drawing using a three-dimensional design program; And a stent preparation step (S300) of fabricating the stent (30) by inputting the tooth deletion data to the three-dimensional printing device. Thus, the period until the final restoration of the tooth is mounted on the tooth, It is possible to provide a method of manufacturing a stent in which teeth crown or bridge can be removed in an optimal form irrespective of proficiency of medical personnel.

A slider 10 detachably coupled to the dental drill and formed with a rod R parallel to the drill bit 2a; A stent 30 which is coupled to the oral cavity when the teeth T are removed and has a through hole 31 through which the drill bit 2a passes without contact and a guide groove 33 into which the rod R is movably inserted, The period until the final prosthesis is mounted on the tooth T and the number of times of the patient's visit are minimized and the tooth (T) to which the crown or the bridge is put is minimized regardless of the proficiency of the medical personnel, It is possible to provide a guide device 1 for a dental drill that can be removed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: guide device 2: dental drill
10: slider 30: stent
11: fixing part 31: through hole
13: rotation part 33: guide groove
13a: extension part 33a:
15: fixed cap 33b: elastic pressing layer
C1: first coupling portion 35: protection ring
C2: second engaging portion 2a: drill blade
S: Step T: Tooth
R: Rod G: Gums
R1:
R2:

Claims (8)

A device for guiding a dental drill in removing a tooth,
A slider detachably coupled to the dental drill and formed with a rod parallel to a drill bit; And
And a stent which is coupled to the oral cavity at the time of tooth removal and has a through hole through which the drill blade does not contact and a guide groove into which the rod is movably inserted,
Wherein a protrusion having substantially the same shape as a state in which teeth have been removed is formed on the inside of the guide groove. The method according to claim 1,
The above-
A coupling unit coupled to the slider; And
And an inclined portion extending from the coupling portion and having a circular cross section and decreasing in diameter toward an end thereof. 3. The method of claim 2,
Wherein the inclination angle of the inclined portion is equal to the inclination angle of the drill blade. 3. The method of claim 2,
And an elastic pressure layer is formed on an inner circumferential surface of the guide groove to press the inclined portion toward the protruding portion. The method according to claim 1,
Wherein the guide groove is formed on both sides of the through hole,
Wherein the rod is formed on both sides of the drill blade. 6. The method of claim 5,
The slider
A fixing part which is in close contact with a lower portion of the head of the dental drill and has a first engaging part formed along a circumferential direction around the drill blade;
A rotatable portion rotatably coupled to the fixed portion about the drill bit and detachably coupled to the rod; And
And a fixed cap which is in close contact with an upper portion of the head of the dental drill and has a second engaging portion engaged with the first engaging portion. The method according to claim 1,
And a protective ring for limiting the flow of the drill bit is coupled to the inner circumferential surface of the through hole. A mouth scan step of scanning a patient's mouth using a three-dimensional scanning device so that a three-dimensional drawing of the patient's mouth is generated;
A virtual deletion step of performing a virtual tooth deletion in the three-dimensional drawing using a three-dimensional design program so that tooth deletion data to be covered by an ideal structure of a crown or a bridge is generated; And
And inputting the tooth deletion data to a three-dimensional printing apparatus to produce a stent,
The stent is provided with a through hole that is coupled to the oral cavity at the time of tooth cleansing and through which the drill bit passes without contact and a guide groove into which the rod is movably inserted. The inside of the guide groove has substantially the same Wherein a protrusion having a shape is formed.

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