KR20130035345A - Dental grinding bur - Google Patents

Dental grinding bur Download PDF

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Publication number
KR20130035345A
KR20130035345A KR1020110099567A KR20110099567A KR20130035345A KR 20130035345 A KR20130035345 A KR 20130035345A KR 1020110099567 A KR1020110099567 A KR 1020110099567A KR 20110099567 A KR20110099567 A KR 20110099567A KR 20130035345 A KR20130035345 A KR 20130035345A
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KR
South Korea
Prior art keywords
tip
tooth
margin
degrees
angle
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Application number
KR1020110099567A
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Korean (ko)
Inventor
오상훈
오정훈
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오상훈
오정훈
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Priority to KR1020110099567A priority Critical patent/KR20130035345A/en
Publication of KR20130035345A publication Critical patent/KR20130035345A/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/06—Tooth grinding or polishing discs; Holders therefor

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

PURPOSE: A dental-use rotational grind tool is provided to form an optimized margin by removing a damaged tooth and to accurately manufacture a dental prosthesis. CONSTITUTION: A dental-use rotational grind tool includes a body(32) formed in a rod shape with specific length, removing a part of tooth by grinding where a straight line unit is extendedly formed to have a specific diameter and a protrusive tip(33) formed in a rounded state from an end part of the straight line while being integrally formed in an end part of the body. In the protrusive tip, the front end is located in the center of the diameter of the body and making left-and-right symmetry and the front angle of the protrusive tip is formed to be 70 degrees to 150 degrees.

Description

Dental grinding bur {Dental grinding bur}

The present invention relates to a dental polishing tool, and more particularly, it is possible to accurately form the margin by a single tool while performing a convenient operation to delete the teeth for the crown prosthesis treatment to restore the appearance of the damaged tooth. A dental rotary grinding tool of the new structure.

In general, a tooth damaged by severe tooth decay or fracture or wear of the tooth is removed to a certain thickness according to the material of the prosthesis to be repaired, thereby restoring the external appearance of the tooth by crown prosthesis treatment of a cap prosthesis. Dental tools for this use a conventional diamond bur (Bur) to polish the damaged part of the teeth by high-speed rotation.

In this case, the tooth that has been removed to a certain thickness for the crown prosthesis is called an abutment, and an edge of the abutment is called a margin. The shape of the cut surface at the end of the prosthesis is determined by the marginal shape of the preparation tooth, and the shape is generally determined by the shape of the abrasive tool for removing teeth.

Prostheses (or crowns) are divided into metal crowns, porcelain fused metal crowns (PFMs), and all ceramic crowns (PFMs), depending on the material. The type of abutment and the resulting margin form will be different.

This will be described with reference to the drawings as follows. 1 (a) to (c) shows the width and shape of the margin M for forming the prosthesis P or the aesthetic prosthesis AP (formed to correspond to the color of the tooth) on the preparation tooth T. 2A to 2C illustrate various types of abrasive tools 10 and 11 for forming abutment T and a margin M corresponding to FIGS. 1A to 1C, respectively. 12).

This will be described in more detail with reference to FIGS. 3 to 5 as follows. Figure 3 shows the shape of the margin (M) for producing a metal crown made entirely of metal, such as gold, as shown in Figures 1 (a) and 2 (a) and the grinding tool 10 for this will be. Typically the metal crown is the angle of inclination of the margin (M) (

Figure pat00001
) Is required to be 45 degrees or less, and for this purpose, the tooth is removed by the grinding tool 10 having a pointed shape, which is typically a pointed tip bur or torpedo bur. Is called. This grinding tool 10 has a tip angle of about 60 to 70 degrees (
Figure pat00002
), And has a shape suitable for forming a margin (M) of the metal crown.

4 and 5 show the shape of the margin (M) for producing a metal ceramic pipe and all the ceramic pipe, respectively, and the polishing tools 11 and 12 for this. In general, the metal ceramic pipe (the metal cap provided inside the ceramic cover) and the whole ceramic pipe (the whole made entirely of ceramic material) have an inclination angle of the margin M (

Figure pat00003
) Are required to form at least 50 degrees and 60 to 70 degrees, respectively, and for this purpose, the grinding tool 11 having a rounded shape as shown in (b) of FIG. 2 is used, which is typically a round end burr (Round) end bur).

Here, the abrasive tool 11 is used to fabricate the metal ceramic pipe and all the ceramic pipe, but the abrasive tool 11 is the boundary portion between the abutment (T) and the aesthetic prosthesis (AP) due to its shape characteristics The enamel layer (T 2 ) not supported by (the human tooth has an dentin layer (T 1 ) inside, and an enamel layer (T 2 ) having a constant grain is formed outside the dentin layer (T 1 )). , The enamel layer (T 2 ) is inclined downward by 5 to 25 degrees from the portion where the margin (M) is located, and when cutting the bar of this grain, it becomes a fragile structure and can be separated by an impact. There is a drawback to leaving.

Since the fragile enamel layer T 2 may cause failure of the prosthetic treatment, in order to prevent this, as shown in FIGS. 2 (c) and 5, the polishing tool 12 having a flat end shape (typically, Shoulder bar) to trim the margin (M) to remove the weak enamel layer (T 2 ).

By the way, the operation of deleting the teeth without leaving the weak enamel layer (T 2 ) using the polishing tools (11, 12) is largely dependent on the skill of the operator, which is difficult for all dentists to easily perform. As well as the polishing tool 11 is a tip is formed in a round shape is likely to cause gum damage when the tooth is deleted.

In addition, the angle of inclination of the margin M depends on how much the diameter D of the polishing tool 11 is used.

Figure pat00004
) Appears differently, it is impossible to always perform the deletion using the same diameter (D) every time the patient's teeth are deleted, which has the disadvantage that a certain result cannot be obtained at the time of operation.

In addition, as shown in FIG. 2 (a), the sharp tool 10 has a disadvantage that it is difficult to form a margin angle required by the metal ceramic pipe or the whole ceramic pipe as described above due to the small tip angle.

Korean Unexamined Patent Publication No. 10-2009-0060269 2009. 06. 11.

The present invention is to solve the problem of the above-described dental polishing tool, the present invention is not only convenient to form the optimized margin by deleting the damaged teeth, but also to form the shape of the margin accurately by a single tool It is to provide a dental rotary grinding tool of a new structure that can produce a prosthesis in an optimized state quickly and accurately without being influenced by the operator's skill through an easy process.

According to a feature of the present invention, provided in the rod-shaped having a predetermined length in the dental rotary polishing tool to polish a tooth to remove a part;

A body 32 provided with a straight portion 34 extending to have a predetermined diameter;

It is formed integrally to protrude to the end of the body (32), and comprises a protruding tip (33) formed in a rounded state from the end of the straight portion (34);

The protruding tip 33 is the tip is located in the center of the diameter (D) of the body 32 to form a left-right symmetry, the tip angle of the protruding tip 33 (

Figure pat00005
) Is provided with a dental rotary grinding tool, characterized in that formed 70 ~ 150 degrees.

According to another feature of the invention, the protruding tip 33 is a curved portion 35 rounded from the end of the straight portion 34 of the body 32, and the inclined straight line from the curved portion 35 to the tip Provided is a dental rotary polishing tool, comprising a portion (36).

According to another feature of the present invention, the inclined straight portion 36 is provided with a dental rotary polishing tool, characterized in that it extends to be 1/2 or more of the diameter (D) of the body (32).

As described above, according to the present invention, the tip angle of the protruding tip 33 protruding from the end of the body 32 (

Figure pat00006
) Is formed to 70 to 150 degrees, the inclination angle (M) of the larger margin (M) than the conventional pointed tip burr (or toffee burr)
Figure pat00007
It is possible to form a deep margin (M) of a clear shape by the) has the advantage that it is easy to manufacture aesthetic prosthesis (AP) such as a normal metal ceramic pipe or all ceramic pipe.

In addition, the present invention is provided with a curved tip (35) rounded at the straight portion 34 of the body 32 and a protruding tip (33) formed at the same time the inclined straight portion (36) extending from the curved portion (35) to the tip In order to prevent the formation of the vulnerable enamel layer (T 2 ) generated when the tooth is deleted by the round-end burr as in the prior art, additional finishing and deletion work is performed by a separate shoulder burr to remove the vulnerable enamel layer (T 2 ). There is no need to do this, thereby preventing the shortening of the lifespan of the prosthesis P (or aesthetic prosthesis AP) due to the presence of the vulnerable enamel layer T 2 , and at the same time the tooth can be completely removed by a single tool. There is an advantage that can provide a convenience in the work because no additional work is required.

In addition, as the inclined straight portion 36 of the protruding tip 33 extends to be 1/2 or more of the diameter D of the body 32, the 1/4 of the diameter D of the body 32 of the tool is increased. Deleting a tooth by using a constant angle of inclination (

Figure pat00008
In addition to forming a margin (M) having a shape and the tip angle of the protruding tip 33 (
Figure pat00009
) And the shape has the advantage of minimizing the damage to the gum (G) when the tooth is deleted.

1 is a cross-sectional view showing the form of a general margin
Figure 2 is a shape diagram showing a conventional abrasive tool
Figure 3 is a cross-sectional view showing a deletion state of the teeth by a conventional grinding tool
Figure 4 is a cross-sectional view showing a deletion state of the tooth by another conventional grinding tool
Figure 5 is a cross-sectional view showing a deletion state of the tooth by another conventional grinding tool
Figure 6 is a front view showing an embodiment of the present invention
Figure 7 is a front view showing another embodiment of the present invention
Figure 8 is a cross-sectional view showing a deletion state of the tooth according to an embodiment of the present invention
9 is a cross-sectional view showing a deletion state of a tooth according to another embodiment of the present invention.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, description will be made with reference to the accompanying drawings.

6 to 9 are cross-sectional views showing a front view showing the various embodiments of the present invention and the deletion state of the tooth according to the embodiment. As shown in Figure 6 and 7, the present invention is provided in the shape of a rod having a predetermined length and diameter (D), the coupling portion 37 is formed to be coupled to a rotary machine such as a handpiece on the top, high speed It is similar to the conventional one in that the diamond particles are fixed to the outer surface as a whole so as to remove a part by grinding the teeth by rotation.

In addition, the present invention is a body 32 is formed so that the straight portion 34 is extended to have a diameter (D) of about 1.0 ~ 1.8mm, the tip of the protruding tip is sharpened at the end of the body (32) (33) is formed integrally, the protruding tip 33 is the tip is positioned in the center of the diameter (D) of the body 32 to form a left-right symmetry, the tip angle of the protruding tip (33) (

Figure pat00010
) Is preferably formed at about 70 to 150 degrees.

The protruding tip 33 has a curved portion 35 rounded from an end of the straight portion 34 of the body 32, and is formed of an inclined straight portion 36 extending from the curved portion 35 to the tip. In this case, the inclined straight portion 36 is preferably formed to extend to approximately 1/2 or more of the diameter (D) of the body (32).

6 is a diameter (D) of the body 32 is 1.4mm, the tip angle of the protruding tip 33 (

Figure pat00011
) Is 86 degrees, Figure 7 is a diameter (D) of the body 32 is 1.8mm, the tip angle of the protruding tip 33 (
Figure pat00012
) Is 112 degrees, which is to form a margin (M) optimized for manufacturing the aesthetic prosthesis (AP) to be overlaid on the preparation tooth (T) as shown in Figure 8 and 9, respectively, This will be described with reference to the drawings as follows.

As shown in FIG. 8, a metal ceramic tube, which is a kind of aesthetic prosthesis (AP), has a metal cap of a metal material positioned therein as mentioned in the prior art, and porcelain, which is a porcelain material, is added to the outside of the metal cap. It is coated with an opaque layer to conceal the color of the metal cap, and at the same time, an appropriate amount of tooth must be removed due to the dentin coating layer and enamel layer being added to resemble the original tooth for in-depth color reproduction. Therefore, in the case of a metal ceramic pipe, a rounded inclined margin (referred to as "chamfer margin") is formed, but the thickness of the tooth should be formed relatively thicker than the gold crown.

As shown, the grinding tool 30 of the present invention has a tip angle of the protruding tip 33 (

Figure pat00013
) Is formed at 86 degrees, the inclination angle of the margin (M) formed by being erased by the grinding tool 30 (
Figure pat00014
) The tip angle of the grinding tool 30
Figure pat00015
It can be formed at 43 degrees, which is 1/2 of, and the margin angle of the aesthetic prosthesis (AP)
Figure pat00016
) Is the angle of inclination of the margin (M) by the polishing tool (30)
Figure pat00017
) And the unique angle of the tooth (
Figure pat00018
), The tooth's natural angle (
Figure pat00019
) Represents an average of about 15 degrees (5 to 25 degrees), and according to the present invention, the inclination angle of the margin M by the grinding tool 30 (
Figure pat00020
) Can be formed 43 degrees, so that the unique angle of the tooth (
Figure pat00021
), You can get 58 degrees by adding 15 degrees, so the margin angle (typically
Figure pat00022
It can be seen that it is appropriate to secure 50 degrees or more.

In the present invention, the protruding tip 33 is formed of a curved portion 35 rounded from the straight portion 34 of the body 32 and an inclined straight portion 36 extending from the curved portion 35 to the tip, The inclined straight portion 36 is formed to have a length of 1/2 or more of the diameter (D) of the body 32, and 1/4 ~ of the diameter (D) of the body 32 by the shape of the protruding tip 33. Deleting a tooth using the 1/2 range always results in uniform margins (M) and tilt angles (

Figure pat00023
) Can be reproduced to provide the convenience of work.

In addition, the present invention can be used to delete the tooth to the range of 1/2 of the diameter (D) of the body 32 by the shape of the protruding tip 33, whereby the abrasive tool 30 to delete the tooth When the contact with the gum (G) is minimized to reduce the damage to the gum (G).

In addition, the enamel layer T 2 of the tooth is easily deleted by the inclined straight portion 36 and the inclination angle thereof, so that a weak hemorrhoid (enamel layer T 2 not supported by the dentin layer T 1 ) is generated. It can be prevented, and also, as described above, the weak hemorrhoids are not generated, so that there is no need for additional finishing and removing work by separate equipment and conventional shoulder burrs.

On the other hand, as shown in Figure 9, a different example of the aesthetic prosthesis (AP) is a whole ceramic tube is made of a ceramic material as a whole is not provided with a metal cap inside, unlike the above-described metal ceramic tube, all of these Re-coating is sufficient to remove the tooth to maintain the strength of the aesthetic prosthesis (AP) to form a thick thickness of the aesthetic prosthesis (AP).

As shown in the present invention, the tip angle of the protruding tip 32 (

Figure pat00024
) Is formed at 112 degrees, the inclination angle of the margin (M) (
Figure pat00025
) The tip angle of the grinding tool 31
Figure pat00026
), Which is 1/2 of 56), and typically the margin angle (AP) of the aesthetic prosthesis (AP) as described in the example described above.
Figure pat00027
) Is the angle of inclination of the margin (M) formed by the grinding tool 31 (
Figure pat00028
) And the unique angle of the tooth (
Figure pat00029
), The tooth's natural angle (
Figure pat00030
) Represents an average of about 15 degrees, and according to the present invention, the inclination angle of the margin M formed by the grinding tool 31 is
Figure pat00031
) Can be formed at 56 degrees, and thus the unique angle of the tooth (
Figure pat00032
) Plus 15 degrees gives 71 degrees, so the margin angle (typically
Figure pat00033
).

Optimized margin angle for manufacturing all these ceramics

Figure pat00034
), Even when forming the tooth using the grinding tool 31 within the range of 1/4 to 1/2 of the diameter (D) of the body 32 as described above, the margin of constant shape (M) is always And its angle of inclination (
Figure pat00035
) Can be reproduced as well as minimizing contact with the gum G when the tooth is deleted by the polishing tool 31 to reduce the damage of the gum G, and also vulnerable hemorrhoids when the tooth is deleted Naturally, there is no need to perform additional finishing deletes because they do not occur.

Tip angle of the protrusion tip 33 in the present invention as described above (

Figure pat00036
) To 70-150 degrees is the tip angle (
Figure pat00037
In the case of the conventional pointed tip burr having 70 ° or less), the margin M cannot be formed to a sufficient depth to produce the aesthetic prosthesis AP, and the tip angle (
Figure pat00038
If the) is 150 degrees or more because the margin (M) is formed so deep that the weak enamel layer (T 2 ) is left.

In addition, the curved portion 35 is formed in the protruding tip 33 to prevent the phenomenon of the handpiece when the tooth is deleted, the inclined straight portion 36 is formed is always a constant form in the repeated procedure This is to obtain and obtain a margin (M) of.

At this time, the length (d) of the inclined straight portion 36 is formed longer than 1/2 of the diameter (D) of the body 32 is the body 32 when the tooth is deleted by the grinding tools (30, 31) To remove the tooth using the grinding tool 31 within the range of 1/4 to 1/2 of the diameter (D), always the margin of constant shape (M) and its inclination angle (

Figure pat00039
) To reproduce them.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

Claims (3)

A dental polishing tool provided in a rod shape having a predetermined length to remove a portion by grinding teeth;
A body 32 provided with a straight portion 34 extending to have a predetermined diameter;
It is formed integrally to protrude to the end of the body (32), and comprises a protruding tip (33) formed in a rounded state from the end of the straight portion (34);
The protruding tip 33 is the tip is located in the center of the diameter (D) of the body 32 to form a left-right symmetry, the tip angle of the protruding tip 33 (
Figure pat00040
) Is a rotary grinding tool, characterized in that formed 70 to 150 degrees.
According to claim 1, The protruding tip 33 is a curved portion 35 rounded from the end of the straight portion 34 of the body 32, and the inclined straight portion (from the curved portion 35 to the tip end) Dental rotary grinding tool, characterized in that consisting of 36).
  3. The dental polishing tool as claimed in claim 2, wherein the inclined straight portion (36) extends to be 1/2 or more of the diameter (D) of the body (32).
KR1020110099567A 2011-09-30 2011-09-30 Dental grinding bur KR20130035345A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11471248B2 (en) * 2018-07-19 2022-10-18 Sharareh Tajbakhsh Interproximal polishing bur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11471248B2 (en) * 2018-07-19 2022-10-18 Sharareh Tajbakhsh Interproximal polishing bur

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