Dentistry – Apparatus – Having gauge or guide
Patent
1986-10-17
1989-04-25
Peshock, Robert
Dentistry
Apparatus
Having gauge or guide
433 76, 433 27, A61C 300
Patent
active
048243671
ABSTRACT:
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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patent: 3218624 (1965-11-01), Zane
patent: 3462842 (1969-08-01), Greenberg et al.
patent: 3839797 (1974-10-01), Randolph
patent: 3863067 (1975-02-01), Gooley
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Deane Edwin R. I.
Rosenstiel Stephen F.
Lepiane Adriene J.
National Research Development Corporation
Peshock Robert
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