N VITRO PULP CHAMBER TEMPERATURE CHANGE DURING COMPOSITE RESIN CURING WITH VARIOUS LIGHT SOURCES

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Journal of the Korean Academy of Pediatric Dentistry 2004;31(1):85-91.
Published online February 29, 2004.

N VITRO PULP CHAMBER TEMPERATURE CHANGE DURING COMPOSITE RESIN CURING WITH VARIOUS LIGHT SOURCES

복합레진 중합 광원에 따른 치수강 온도 변화에 대한 생체외 연구

이지영, 김대업, 이광희

원광대학교 치과대학 소아치과학교실 및 원광치의학연구소

Correspondence: ,

Abstract

The purpose of this study was to observe in vitro pulp chamber temperature rise during composite resin polymerization with various light-curing sources. The kinds of light-curing sources were plasma arc light(P), low heat plasma arc light, traditional low intensity halogen light, low intensity LED(L-LED), and high intensity LED(H-LED). Temperature at the tip of light guide was measured by a digital thermometer using K-type thermocouple. Occlusal cavities$(2{times}2{times}1.5mm)$ 수식 이미지 were so prepared in extracted human premolars as to the remaining dentin thickness was 1mm. Dentin adhesive was applied to all cavities. Experimental groups consisted of no base group, ionomer glass base group, and calcium hydroxide base group. Temperature before and after resin filling was measured. Temperature at the light guide tip was the highest with P and the lowest L-LED. Temperature before resin filling was the highest with H-LED and the lowest with L-LED. Temperature after resin filling was the highest with H-LED and the lowest with L-P and with L-LED. The lining of base partially reduced the temperature rise

Key Words: Composite resin, Curing light, Pulp chamber, Temperature