Journal of the Korean Academy of Pediatric Dentistry 1998;25(4):683-690.
Published online November 30, 1998.
THE RELIABILITY OF LASER DOPPLER FLOWMETER IN PULP VITALITY TEST OF TEETH
 
치수생활력 검사 방법으로서 laser Doppler flowmeter의 신뢰도
남동우, 김영진, 남순현
경북대학교 치과대학 소아치과학교실
Abstract
The purpose of this study was to evaluate the reliablity of laser Doppler flowmeter on the permanent maxillary central incisors with open apex. Laser Doppler flowmeter and electric pulp tests were done in 35 elementary students aged between 8 and 9 years and 35 females and males aged between 23 and 24 years. Teeth with open apex were confined to root developmental stage 5 and 6 by Moorrees classification. The threshold of electric pulp tests was decided the time of tingling sensation. More than three different electric pulp tests applied on every teeth with more than 3 minutes interval between each teeth due to the false response. Laser Doppler flowmeter test stablilzation and observation stages took more than 5 minutes each LDF values and electric pulp test thresholds were analyzed with student t-test. The results were as follows: 1. The electric pulp test threshold on teeth with immature and mature roots showed 28.4% and 100% response respectively, and the the LDF values on teeth with immature and mature roots showed 100% response. 2. The EPT thresholds on teeth with immature roots were larger than thresholds on teeth with mature roots(p<0.01). 3. No significant differences were found in the LDF values on teeth with immature and mature roots.
Key Words: electric pulp test, laser Doppler flowmeter, pulp vitality test


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