THE TEMPERATURE RISING IN PULP CHAMBER DURING COMPOSITE RESIN POLYMERIZATION

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Journal of the Korean Academy of Pediatric Dentistry 2003;30(3):431-438.
Published online August 31, 2003.

THE TEMPERATURE RISING IN PULP CHAMBER DURING COMPOSITE RESIN POLYMERIZATION

광중합 기전에 따른 복합레진 중합 시 치수강 내 온도변화

황동환, 이주현, 박호원

강릉대학교 치과대학 소아치과학교실.구강과학연구소

Abstract

This study investigates pulp chamber temperature rise during composite resin polymerization by plasma arc(Group III : Flipo 3 sec, Group IV : Flipo 5 sec) and LED curing units(Group V : Lux-O-Max, 40 sec) as well as conventional halogen lamp curing units(Group I : VIP mode3, 20 sec, Group II : VIP mode6, 20 sec). The results are as follows : 1. All of the investigated pulp chamber temperature rises are lower than the boundary temperature could result in irreversible damage to the pulpal tissue ($5.5^{circ}C$ 수식 이미지). 2. In the group II, it is found the significantly higher pulp chamber temperature rise than any other groups(p<0.05). 3. In the group of composite resin light-cured with VIP, it is found the significantly higher pulp chamber temperature rise in the group II than group I(p<0.05). 4. In the group of composite resin light-cured with Flipo, it is found the significantly higher pulp chamber temperature rise in the group IV than group III (p<0.05). 5. In the case of comparing VIP and Flipo, group II is significantly higher pulp chamber temperature rise than group III, IV(p<0.05), and group IV is significantly higher pulp chamber temperature rise than group I(p<0.05), and it does not significantly differ between group I and III. 6. In the group of composite resin light-cured with Lux-O-Max, it is found the significantly lower pulp chamber temperature rise than any other groups (p<0.05).

Key Words: Composite resin, Plasma arc, LED, Pulp chamber temperature