CN201692089U

CN201692089U - Alveolar bone thickness measuring instrument

Info

Publication number: CN201692089U
Application number: CN2010202376651U
Authority: CN
Inventors: 姜宝岐; 孙晓迪; 徐欣
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-01-05
Anticipated expiration: 2020-06-25

Abstract

The utility model relates to an alveolar bone thickness measuring instrument, which is classified as an instrument for measuring the alveolar bone thickness before tooth-planting operations. The alveolar bone thickness measuring instrument has a simple structure, is convenient to use, and can precisely measure the thickness of an alveolar bone, relieve a patient's pain, and lower the cost. The utility model adopts the structure as follows: the measuring instrument includes a pair of hinged short rotating arms and a pair of long rotating arms. Matched gingiva thickness measuring deices are respectively arranged at tail ends of the two short rotating arms, graduated scales are arranged on the short rotating arms, and a slidable vernier indicating sheet is arranged on one of the short rotating arms and used for measuring the distance from the gingiva to a measured point; and a graduated scale is arranged on the top end of one long rotating arm, while the other long rotating arm is matched with the graduated scale and used for measuring the thickness of the alveolar bone.

Description

The alveolar bone thickness measurement equipment

Technical field

This utility model relates to a kind of alveolar bone thickness measurement equipment.

Background technology

Implant denture is meant that the surgeon implants artificial tooth root (implantation body) in the alveolar bone of edentulous region by the operation of alveolus surgery, through 1～3 month healing stage, when artificial tooth root (implantation body) with base station and superstructure are installed after alveolar bone combines thereon, finish the process that the artificial tooth reparation is made at last.Compare with the repair mode of other defect of dentition or disappearance, have that maintenance is stable, holding power by force, does not destroy adjacent teeth and feel advantage such as comfortable, be known as first-selected repair mode after the agomphosis by medical circle of oral cavity, be called as human " the 3rd secondary tooth ".

But before implant operation, need and highly estimate to measure, whether be large enough to hold implantation body to estimate this district's bone amount to width, the thickness of the alveolar bone of intending the implantation region.The conventional panoramic of using of the assessment of alveolar bone width, height at present can well be measured, but because this kind X-ray film is a two dimensional image, so alveolar bone thickness is difficult to measure.Address this problem clinically now, mainly take three kinds of modes: 1, perusal.Because the alveolar bone surface has gingiva to cover and the thickness of gingiva has individual difference, so this kind method is difficult to accurately estimate its thickness; 2, the gingiva vernier caliper measurement is opened in operation.This kind method increases operation wound, and patient is difficult to accept; 3, CT tomoscan.This kind method expense is higher, is difficult to as implant operation routine examination project.

Summary of the invention

The purpose of this utility model is exactly in order to address the above problem, and provides a kind of and has simple in structurely, easy to use, can measure accurately by the thickness to alveolar bone before operation, and reduce patient's misery, the alveolar bone thickness measure instrument of advantage such as reduce cost.

For achieving the above object, this utility model adopts following technical scheme:

A kind of alveolar bone thickness measurement equipment, it comprises a pair of hinged pivoted arm, is respectively equipped with the gingiva measurer for thickness that matches at the end of two pivoted arms, and one of them pivoted arm top is provided with rule, and another pivoted arm then matches with this rule.

Described gingiva measurer for thickness is two gingiva thickness measure pins that match, and they lay respectively at two pivoted arm ends; Having with 0.5 millimeter on each gingiva thickness measure pin is the scale of minimum measurement unit.

The end of described two pivoted arms also is respectively equipped with scale, and the terminal suit of a pivoted arm reads the scale wiper therein simultaneously.

This alveolar bone thickness measurement equipment is used the ultimate principle design of slide gauge, compasses and geometry, measures accurately with the thickness to alveolar bone before operation.

The beneficial effects of the utility model are:

1, the assessment of measuring point alveolar bone thickness accurately;

2, need not operation, wound is minimum;

3, cheap, but widespread usage;

4, processing is simple, easy-to-use;

But 5 routine disinfections are reused.

Description of drawings

Structural representation when Fig. 1 does not work for this utility model;

Structural representation when Fig. 2 works for this utility model.

Wherein, 1. gingiva thickness measure pin, 2. hold-down nut, 3. rotating shaft, 4. pivoted arm, 5. rule, 6. wiper.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment this utility model is described further.

Among Fig. 1, Fig. 2, it comprises a pair of pivoted arm 4, and both are hinged by rotating shaft 3, and can freely rotate.At the end of two pivoted arms 4 a gingiva thickness measure pin 1 is installed respectively, two gingiva thickness measure pins 1 are oppositely arranged, it is the scale of minimum measurement unit that each gingiva thickness measure pin 1 has with 0.5 millimeter, and its diameter is less, the most advanced and sophisticated sharp keen tiny gingiva that can directly puncture is little and measure accurately to the gingiva wound.Two pins are fixed on the pivoted arm 4 by hold-down nut 2 respectively, and can regulate according to the difference of gingiva thickness, and reading numerical values is established two pin measured values and is respectively d ₁, d ₂

On the end of two pivoted arms 4, be added with scale respectively; On one pivoted arm 4 ends, be added with wiper 6.This wiper 6 can be regulated apart from the distance of gingival margin according to measurement point, so from the scale of pivoted arm 4 ends reading numerical values.Its act as when measuring alveolar bone thickness can clear and definite institute's measuring point and gingival margin between distance, thereby make the gauger more clear to the three-dimensional conformation of alveolar bone.

Two pivoted arms 4 can be around rotating shaft 3 rotation, and pivoted arm 4 top have rule, another pivoted arm 4 its terminals are that reading numerical values on the rule 5 is convenient at the tip.According to geometrical principle: establishing two pivoted arms, 4 angles is the α angle, and pivoted arm 4 terminal distances to rotating shaft 3 are r, and pivoted arm 4 tops are R to the distance of rotating shaft 3, then according to the arc length computing formula

L=?πrα/180;

Then being arc length l=π r α/180 of radius with r, is arc length L=π R α/180 of radius with R;

So l/L=r/R

If r=15mm, R=150mm, then l/L=1/10 can design scale according to this ratio on rule, and its minimum measurement unit is 1/10mm.This principle can read the l value by rule is more accurate.

As the value that reads on the rule is D, and this value is the measurement thickness that comprises gingiva; If the gingiva thickness value that two gingiva thickness measure pins read is respectively d ₁, d _2;So, alveolar bone thickness d=D-(d ₁+ d ₂).

Claims

1. an alveolar bone thickness measurement equipment is characterized in that, it comprises a pair of hinged pivoted arm, is respectively equipped with the gingiva measurer for thickness that matches at the end of two pivoted arms, and one of them pivoted arm top is provided with rule, and another pivoted arm then matches with this rule.

2. alveolar bone thickness measurement equipment as claimed in claim 1 is characterized in that, described gingiva measurer for thickness is two gingiva thickness measure pins that match, and they lay respectively at two pivoted arm ends; Having with 0.5 millimeter on each gingiva thickness measure pin is the scale of minimum measurement unit.

3. alveolar bone thickness measurement equipment as claimed in claim 1 is characterized in that the end of described two pivoted arms also is respectively equipped with scale, and the terminal suit of a pivoted arm reads the scale wiper therein simultaneously.