Dental detection apparatus for position of root apex

Details Dental detection apparatus for position of root apex Dental detection apparatus for position of root apex

1991-03-12

1992-05-12

Swiatek, Robert P.

Dentistry

Apparatus

Having condition sensor to transmit signal to regulate...

433224, 128776, A61C 100, A61C 502, A61B 5103

Patent

active

051122243

ABSTRACT:
A dental detection apparatus for the position of a root apex comprises two oscillators for generating the currents having two different frequencies passing between a single electrode contacting to a patient's body and a reamer, a differential amplifier for detecting the difference .DELTA.V of the respective impedance variations of these currents, a direct current amplifier for amplifying the output of the differential amplifier to input to a meter, a comparator for connecting the output side to a two contact analog switch, the input side of the comparator being connected to the OUT of the direct current amplifier, a binary up/down counter for switching the input frequencies to the count down condition or the count up condition by the switching operation of the two contact analog switch, a D/A converter for connecting the output side to the differential amplifier so as to operate the offset of the differential amplifier, while the input side being connected to the OUT of the binary up/down counter, and an automatic calibration switch for passing the frequency signal transmitted from one of the two oscillators by ON operation to the binary up/down counter through the two contact analog switch.

REFERENCES:
patent: 3916529 (1975-11-01), Mousseau
patent: 3993044 (1976-11-01), McGuffin
patent: 4193408 (1980-03-01), Fujino
patent: 4243388 (1981-01-01), Arai
patent: 4353693 (1982-10-01), Dery et al.
patent: 4526179 (1985-07-01), Salesky

Affiliated with

Also associated with

Rating

Dental detection apparatus for position of root apex does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dental detection apparatus for position of root apex, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dental detection apparatus for position of root apex will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2424778