JP2009232989A - Stopper of cutting tool for dental implant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stopper of a cutting tool which regulates a cutting depth physically in a way similar to a conventional stopper having a flange and prevents a part being planned to form an implanting hole from being obstructed unnecessarily by the stopper from a dentist's field of vision. <P>SOLUTION: The stopper of a cutting tool for a dental implant is used for regulating the cutting depth and is fitted to a rotary axis of a cutting tool having the rotary axis. The outer diameter of the stopper having a penetrating hole is identical to the maximum diameter of a cutting tool for forming a final fixture implanting hole or of a fixture to be implanted. The stopper of a cutting tool for a dental implant preferably has a cylindrical shape with a specific height of 2-20 mm. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stopper for a cutting tool that is mounted on a cutting tool used in dental implant treatment to regulate the cutting depth or to provide a reference for the cutting depth.

  Conventionally, a method using a bridge and a method using a denture have been generally performed as a dental prosthesis method for a missing tooth portion. In recent years, an implant fixture that serves as a maintenance and stabilization device for a dental prosthesis is placed in an insertion hole formed in the jawbone of the missing tooth to substitute the function of the root of the natural tooth, and the oral cavity of this implant fixture A dental prosthesis technology has been developed and implemented by connecting and fixing a dental prosthesis fixing device on the inside to form a dental prosthesis maintenance device, and fixing the dental prosthesis to the dental prosthesis maintenance device ( For example, see Patent Document 1.)

  In this implant treatment, it is important to accurately form a hole for embedding the fixture in the jawbone. Therefore, an X-ray photograph of a patient's jawbone is prepared, and a method for forming an embedding hole by using a cutting tool (drill) after determining an embedding direction of the fixture in advance. At this time, the depth of the embedding hole was regulated by an operator confirming a mark engraved on the cutting tool by, for example, a laser mark, or by a flange-like stopper formed on the cutting tool.

  However, since the cutting depth is not physically restricted only by marks such as printing and laser marking, the accuracy of the cutting depth depends on the technique of the operator's confirmation. In actual treatment, it is often difficult to confirm this mark due to bleeding or the like, and it is often impossible to obtain an accurate cutting depth.

  The flange for cutting depth regulation that is attached to a conventional cutting tool or formed in advance may obstruct the treatment site where the embedding hole is to be formed more than necessary from the view of the operator. Specifically, in dental implant treatment, generally, an embedding hole is formed from a cutting tool having a diameter smaller than that of the embedding hole to be formed, and gradually using a thicker cutting tool. It is most important to accurately determine the position of the embedding hole when using the tool. In conventional stoppers for cutting tools, the diameter of the flange is not particularly defined, and if the flange diameter is larger than necessary, the operator may not be able to visually recognize the tip of the cutting tool. Had the problem that it was very difficult to start cutting at the exact location.

JP 10-108771 A

  Therefore, the present invention provides a cutting tool stopper that physically defines the cutting depth in the same manner as a conventional flange stopper, and does not unnecessarily obstruct the site where the embedding hole is to be formed from the operator's view. It is an object to provide a stopper for a cutting tool.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have determined that the outer diameter of the stopper for the cutting tool is the maximum diameter of the cutting tool for forming the final embedding hole or the fixture to be embedded. When the first cutting tool is used, even if the tip of the cutting tool is not visible to the operator, the final cutting tool or the cutting tool of the thickness of the fixture to be embedded is used. It was found that the position can actually be finely adjusted in the oral cavity of the patient depending on the diameter of the stopper, so that an accurate position can be determined as a result.

  That is, the present invention relates to a cutting depth regulating stopper that is used by being fitted to a rotating shaft of a cutting tool having a rotating shaft, and the outer diameter of the stopper body having a through hole is the final fixture embedded. A stopper for a cutting tool for a dental implant, characterized by being equal to the maximum diameter of the cutting tool for forming the insertion hole or the maximum diameter of the fixture to be embedded. And it is a stopper for cutting tools for dental implants preferably having a cylindrical shape with a height of 2 to 20 mm.

  The stopper for a cutting tool according to the present invention is a stopper for a dental implant that can determine an accurate position even when the tip of the cutting tool is not visible to the operator when the first cutting tool is used. .

Hereinafter, the stopper for a cutting tool according to the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory perspective view showing an embodiment of a cutting tool stopper for a dental implant according to the present invention. FIG. 2 is an explanatory plan view showing a state in which the cutting tool stopper for a dental implant according to the present invention is mounted on the cutting tool.

  In the drawings, reference numeral 1 denotes a stopper body for a cutting tool according to the present invention, which is used by being locked to a rotating shaft 2 a of the cutting tool 2. The cutting tool 2 can be used without particular limitation as long as it has a shape of a so-called dental drill having a cutting part and a rotating shaft.

  The stopper 1 for a dental implant for dental implants according to the present invention is made of a resin material or a metal material, and has a through hole 1a at least partially in contact with the rotating shaft 2a. A claw 1c for locking is attached in the through hole 1a so as to be surely locked with a groove 2c provided on the rotary shaft 2a of the cutting tool 2, or a slit 1b is provided in the case of metal. Then, since it is easy to mount | wear with a cutting tool, it is preferable. Although not shown, the locking member 1b made of a flexible material such as plastic or rubber may be used in combination. At this time, since the cutting tool used in dentistry is sterilized by heating, the material of the stopper 1 for the cutting tool is also a resin having high heat resistance, such as polypropylene, polycarbonate, polyarylate, polysulfone, polyphenylene sulfide, polyether ether ketone, polyimide resin. Fluorine resin and the like are preferable, and polyamide imide and polyether ether ketone are particularly preferable because they have a heat resistance of 250 ° C. or higher. In the case of a metal material, metal materials such as titanium, titanium alloy, and stainless steel conventionally used in dentistry can be used without particular limitation.

  The shape of the stopper 1 for a dental implant for dental implants according to the present invention is preferably substantially cylindrical as shown in FIG. 1, and is a rotating body centered on the rotating shaft 2a for ease of cutting work. It is preferable. The stopper 1 for a dental implant for dental implants according to the present invention is characterized in that its outer diameter is equal to the maximum diameter of a drill for forming the final hole or the maximum diameter of an embedded fixture. The diameter of the specific stopper 1 for cutting tools is about 2-7 mm in diameter.

  When the stopper 1 for the cutting tool for dental implants is equal to the maximum diameter of the fixture to be embedded, it is more accurate to have the same appearance as the entire fixture or the upper side of the fixture. Is preferable to the surgeon. Moreover, although not shown in figure, the front-end | tip (oral cavity inner side) of the cutting tool stopper 1 for dental implants may be thin according to the shape of the fixture to be embedded.

  The stopper 1 for a dental implant for dental implants according to the present invention is preferable because it is easy to confirm that the height is 2 to 20 mm and it is easy to imagine the shape and size of the fixture to be embedded.

  If the stopper 1 for a dental implant for dental implants according to the present invention is in the form shown in FIG. Install and fit between grooves and protrusions.

The perspective explanatory view showing the example of the stopper for cutting tools for dental implants concerning the present invention. Plane explanatory drawing which shows one Example of the state which mounted | wore the cutting tool with the stopper for cutting tools for dental implants concerning this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stopper for cutting tools 1a Through hole 1b Slit 1c Claw 2 for locking 2 Cutting tool 2a Rotating shaft 2b Flange 2c Groove

Claims (2)

  A stopper for cutting depth regulation used by being fitted to the rotary shaft of a cutting tool having a rotary shaft, and the outer diameter of the stopper body having a through hole forms a final fixture embedding hole. A cutting tool stopper for dental implants, characterized in that it is equal to the maximum diameter of the cutting tool or the maximum diameter of the fixture to be embedded.   The stopper for a cutting tool for a dental implant according to claim 1, wherein the stopper is a cylindrical shape having a height of 2 to 20 mm.

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