Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.11c
- /
- Pages.720-723
- /
- 2003
An electric pulp tester using a constant current source
정 전류원 이용한 치수(齒髓) 검사기
Abstract
Electric stimulation of teeth is used for assessing pulp vitality. Because of very high and wide range of impedance of the enamel, electric pulp testers use high voltage, high output impedance and alternative current source. Most pulp testers use voltage stimulation method and their stimulating threshold levels significantly depend on each individual. Therefore, a constant current stimulator is necessary to minimize the effect of wide variation in enamel thickness. In this study, we constructed a constant current source type of pulp tester with the maximum current of 150 uA.