Root apex position detection apparatus

Details Root apex position detection apparatus Root apex position detection apparatus

2011-03-22

2011-03-22

Rodriguez, Cris L (Department: 3776)

Dentistry

Apparatus

Having gauge or guide

C433S032000, C600S547000, C600S590000

Reexamination Certificate

active

07909604

ABSTRACT:
Root apex position model data associated with electrical characteristic values between a measurement electrode and a mouth electrode in a state in which the distal end of the measurement electrode is located at a root apex position of a root canal is stored in a storage unit. A power supply applies measurement signals of 500 Hz and 2 kHz between the measurement electrode and the mouth electrode. Two different current values flowing between the measurement electrode and the mouth electrode are detected. These current values are compared with the root apex position mode data stored in the storage unit. If the root apex position data includes any data which coincides with the current values, it is detected that the distal end of the measurement electrode is located at the root apex position.

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