发明名称 |
Dental drill alignment indicator |
摘要 |
In dental surgery when a tooth is to be crowned, the tooth has to be prepared by cutting a taper. It has been found that for the successful mounting of a crown the taper must be much more exactly prepared than is possible using currently available equipment. The present invention allows the initial position of the axis of a cutter to be related by means of electronic "spirit levels" to a selected axis. Deviation from this axis by more than a predetermined amount is indicated by light sources which can be seen regardless of the position of a handpiece holding the cutter. By means of a code these light sources indicate how the dentist must move the cutter to return to the correct axis.
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申请公布号 |
US4824367(A) |
申请公布日期 |
1989.04.25 |
申请号 |
US19860920000 |
申请日期 |
1986.10.17 |
申请人 |
NATIONAL RESEARCH DEVELOPMENT CORPORATION |
发明人 |
ROSENSTIEL, STEPHEN F.;DEANE, EDWIN R. I. |
分类号 |
A61C1/08;G01C9/00;(IPC1-7):A61C3/00 |
主分类号 |
A61C1/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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