Dental system for treating a root canal

Details Dental system for treating a root canal Dental system for treating a root canal

1990-04-06

1991-05-21

Stone, Cary E.

Dentistry

Apparatus

Having gauge or guide

433224, A61C 1904

Patent

active

050171348

ABSTRACT:
The present invention relates to dental equipment for treating a root canal. According to the present invention, two input signals with different frequencies are superposed. The difference between impedances corresponding to the two different frequencies at a given position in the root canal where the impedances hardly vary, is obtained. This value and a clinically determined value are used to detect the desired position in the root canal.

REFERENCES:
patent: 3660901 (1972-05-01), Inoue
patent: 4353693 (1982-10-01), Dery et al.

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