JP2006102440A - Mandible thickness measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mandible thickness measuring instrument which can measure the thickness of a mandible in order to aid success in an implant operation, because a bone cut in the implant operation is difficult to measure in thickness and gets out of a direction for allowing to take a photograph by X ray. <P>SOLUTION: This mandible thickness measuring instrument comprises a vertical shaft for inserting into a hole formed by cutting a bone to measure a distance from the outside of the bone, and a horizontal shaft which is graduated with a scale, is connected with the top, and can be slid along the vertical shaft to measure thicknesses of the bone at various depths of positions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an implant treatment device for implantation in a dental jawbone.

  Conventionally, in order to measure the thickness of the jawbone, measurement is performed from preoperative CT or from the outside of the jawbone.

  Implant treatment is treatment in which an artificial tooth root is embedded in a jawbone in a portion where a tooth is missing. Drill holes in bones. The holes are gradually expanded from a thin drill to 3mm, 4mm and 5mm. If the bones on the side are thin and there are holes on the side, it can cause failure. Prior to the operation, CT and radiographs are used for examination, but during the operation, cutting is performed with concern about the thickness of the surrounding jawbone.

  In addition, the following patent document 1 can be mentioned as a well-known technique relevant to this invention.

  JP-A-8-196550

  As described above, pre-examination examination and the like are difficult to grasp the state of the bone during the operation and cannot be photographed by X-rays. It is desirable to be able to grasp the bone thickness at any time for reliable cutting and for successful implant placement.

  The present invention is characterized in that the bone thickness during surgery can be measured at any stage.

  In order to grasp the thickness of the bone, the present invention is characterized in that the distance between the inner wall and the outer wall of the bone can be measured.

  As explained above, implants can be performed based on preoperative examinations, and the present invention can be used to ascertain bone conditions reliably during surgery, and both patients and surgeons can safely and reliably cut bones. It is effective for.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  1 to 4 show the measurement of the thickness of the bone outside the portion cut at each stage during the operation according to the present invention.

  FIG. 5 shows a state in which a bone has a hole and the implant may fail, and the thickness of the bone is 0 mm.

  FIG. 7 is a diagram of the present invention. The vertical axis 1 shows the depth of cutting the bone when the vertical axis is inserted into the bone. The ring 2 slides up and down the vertical axis 1, and the ring 3 slides along the horizontal axis 4 left and right. The horizontal axis 4 has a scale that indicates the distance from the outer periphery 6 and the tip 5 of the vertical axis. Therefore, it is a mechanism in which the tip 5 is measured at the site where it is desired to measure the bone thickness.

  The ring 2 can slide and rotate on the vertical axis 1 in FIG. The horizontal axis 4 only slides in such a way that the ring 3 does not rotate. As a result, the outer periphery 6 on the vertical axis and the tip 5 can be kept at the shortest distance, and twisting of the outer periphery 6 on the vertical axis and the needle 7 can be prevented.

  Since the length of the vertical axis 1 in FIG. 7 is used in the oral cavity, it may be necessary to use it separately for 30 to 40 mm front teeth and back teeth. The diameter of the vertical axis varies depending on the diameter of the cutting tool, but for example, several types such as 1 mm, 3 mm, 4 mm, and 5 mm will be necessary step by step. Further, if the scale is set to 6 mm, 8 mm, or 10 mm from the tip of the vertical axis, the depth cut by the X-ray photograph can be confirmed. Since the hole cut by the drill is a regular cylinder, it has a shape corresponding to it.

  Since the horizontal axis 4 serves as a caliper, it is preferable to have a scale in 1 mm increments. Since the length is about 10 mm to 15 mm and the ring 3 is not rotated, the shape is not a regular cylinder. The diameter may be about 2 mm to 3 mm.

  The ring 2 and the horizontal shaft 4 are fixed, and the ring 3 and the needle 7 are fixed.

  Although the embodiments and examples of the present invention have been described above, the scope of the present description is not limited thereto. For example, the diameter of the vertical axis increases as the instrument used for implant treatment increases. The deeper the cutting, the longer the vertical axis. It is appropriately selected according to the situation.

  This description can be used in the industrial field and medical field in which equipment used in dentistry is manufactured and sold.

  A figure where the vertical axis is a thin type and is measured from above the gingiva   A figure where the vertical axis is a small type and is measured at the beginning of the bone cutting stage   A figure where the vertical axis is the medium type and is measured in the middle of the bone cutting stage   A figure where the vertical axis is a large type and is measured at the later stage of the bone cutting stage   Measured state of a hole in the bone leading to failure   A figure where the vertical axis is a thin type and the gingiva is peeled off and measured   It is an external view of the present invention

Explanation of symbols

1 Vertical axis 2 Vertical axis ring 3 Horizontal axis ring 4 Horizontal axis 5 Tip 6 Vertical axis 7 Needle 8 Jawbone 9 Gum

Claims (3)

  A jaw bone thickness measuring instrument that measures the thickness of a bone by inserting a vertical axis into the cut bone and measuring the distance from the tip.   Since the scaled horizontal axis connected to the tip slides along the vertical axis, the bone thickness at various depths can be measured.   By making the horizontal axis a non-circular shape, twisting of the vertical axis and the needle can be prevented, and the shortest distance between the vertical axis and the tip can be measured.

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