CN213883555U - Dental bur - Google Patents

Abstract

The utility model relates to the field of dental surgical instruments, in particular to a dental bur, which comprises a transmission part, a trimming part and a cutting part which are connected in sequence; the cross-sectional areas of the trimming part and the cutting part are gradually reduced in the direction away from the transmission part; a stop ring is arranged between the transmission part and the trimming part; the distance between the stop ring and the end of the cutting part is 7-9 mm. The hole opening machine is compact in structure, can complete opening of the holes and trimming of the hole types without tool changing during use, simplifies operation and saves time. Simultaneously, through the arrangement of the stop ring, the operation difficulty is reduced, the technical sensitivity is low, the damage to the bottom wall can be avoided, and the postoperative complications are reduced.

Description

Dental bur

Technical Field

The utility model relates to a dental surgical instruments field particularly, relates to a dental car needle.

Background

The portion of the cavity in the middle of the tooth contains soft tissue known as the pulp. The upper part of the cavity is wide, called the pulp chamber, and the lower part is provided with a tubular root canal from which the blood vessels of the dental nerve and the trophic nerve are derived. Humans typically have 1-4 root canals per tooth, with the most root canals in the posterior teeth. Infections occur in the pulp of the teeth, causing pain, jaw infections, and eventually the teeth become weakened due to death of the dental nerves.

In endodontic treatment, a prepared hole is usually needed, but the tooth structure is special and the nerves are abundant, so that the preparation of the hole rapidly and safely is concerned.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dental bur which comprises a transmission part, a finishing part and a cutting part which are connected in sequence;

the cross-sectional areas of the trimming part and the cutting part are gradually reduced in the direction away from the transmission part;

a stop ring is arranged between the transmission part and the trimming part;

the distance between the stop ring and the tail end of the cutting part is 7-9 mm.

In some embodiments of the present invention:

the distance between the stop ring and the end of the cutting portion was 7.5 mm.

In some embodiments of the present invention:

the cutting part is a drill bit; the drill bit is made of tungsten steel.

In some embodiments of the present invention:

the cutting part comprises a plurality of cutting edges; and a chip groove is arranged between the cutting edges.

In some embodiments of the present invention:

the stop ring further comprises a contact sensor; the contact sensor is configured to stop the dental bur from rotating when the stop ring contacts a tooth. In some embodiments of the present invention:

the technical scheme of the utility model possess following beneficial effect at least:

the application provides a dentistry car needle, its compact structure need not the tool changing and can accomplish the opening and repair the hole type when using, and the simplified operation saves time. Simultaneously, through the arrangement of the stop ring, the operation difficulty is reduced, the technical sensitivity is low, the damage to the bottom wall can be avoided, and the postoperative complications are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a dental bur according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a dental bur according to an embodiment of the present invention.

In the figure: 100-dental bur; 110-a transmission part; 120-a stop ring; 130-a finishing part; 140-cutting section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "up", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Examples

Referring to fig. 1, a dental needle 100 according to the present embodiment is provided for endodontic treatment or other dental procedures requiring opening the marrow, so as to reduce the number of tool changes.

Specifically, the dental needle 100 includes a driving part 110, a finishing part 130, and a cutting part 140, which are connected in sequence. The transmission 110 is adapted to cooperate with a turbine or other drive device to rotate the dental bur 100 in a predetermined direction.

The trimming part 130 and the cutting part 140 have a cross-sectional area gradually decreasing in a direction away from the driving part 110 to form a tapered outer profile for endodontic treatment or preparation of a cavity. In the operation process, the cutting part 140 drills, and the trimming part 130 trims the hole shape, so that the phenomenon that a drill bit is used for drilling first and then a carborundum needle is replaced for correcting the hole shape is avoided, the operation is simplified, and the time is saved. In some embodiments, the finishing portion 130 for finishing the hole pattern may include surface diamond grains.

In operation, the depth of the drill is usually controlled by experience of a physician, but a less experienced physician may have too much depth of the drill, so in order to control the maximum depth of the drill, in the present embodiment, the stop ring 120 is disposed between the transmission part 110 and the trimming part 130, and it can be understood that the distance between the stop ring 120 and the end of the cutting part 140 is the depth of the drill.

In some embodiments, the distance between the stop ring 120 and the distal end of the cutting portion 140 is determined to be 7-9 mm from dental construction and surgical experience, avoiding damage to the bottom wall.

Preferably, in some embodiments, the distance between the stop ring 120 and the end of the cutting part 140 is selected to be 7.5mm according to big data.

In some embodiments, referring also to fig. 2, the cutting portion 140 is a drill bit; the drill bit is made of tungsten steel. The tungsten steel has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, and particularly has high hardness and wear resistance.

Specifically, the cutting part 140 includes a plurality of cutting edges thereon; and a chip groove is arranged between the cutting edges. In other embodiments, the cutting portion 140 may also have a partial or full profile of a drill bit such as a split drill, a reverse taper drill, or a round ball drill.

In some embodiments, to stop continuing drilling down when reaching a position, the stop ring 120 further includes a contact sensor; the contact sensor is configured to stop the dental burr 100 from rotating when the stop ring 120 contacts the tooth. When a doctor with less experience operates, the operation difficulty is reduced, the technical sensitivity is low, and the postoperative complications are few. The touch sensor used in the present application may be a direct touch sensor or a non-contact inductive sensor.

The dental needle 100 provided by the embodiment has a compact structure, can complete hole forming and hole shape trimming without changing a tool when in use, simplifies operation and saves time. Meanwhile, due to the arrangement of the stop ring 120, the operation difficulty is reduced, the technical sensitivity is low, the bottom wall can be prevented from being damaged, and postoperative complications are reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A dental bur, comprising:

the dental bur comprises a transmission part, a finishing part and a cutting part which are sequentially connected;

the cross-sectional areas of the trimming part and the cutting part are gradually reduced in the direction away from the transmission part;

a stop ring is arranged between the transmission part and the trimming part;

the distance between the stop ring and the tail end of the cutting part is 7-9 mm.

2. A dental bur as in claim 1, wherein:

the distance between the stop ring and the end of the cutting portion was 7.5 mm.

3. A dental bur as in claim 1, wherein:

the cutting part is a drill bit; the drill bit is made of tungsten steel.

4. A dental bur as in claim 3, wherein:

the cutting part comprises a plurality of cutting edges; and a chip groove is arranged between the cutting edges.

5. A dental bur as in claim 1, wherein:

the stop ring further comprises a contact sensor; the contact sensor is configured to stop the dental bur from rotating when the stop ring contacts a tooth.

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