Journal of the Korean Academy of Pediatric Dentistry 1998;25(2):323-334.
Published online May 31, 1998.
A COMPARATIVE STUDY ON THE MICROLEAKAGE OF THE AMALGAM AND GALLIUM ALLOY
 
아말감과 갈륨알로이의 미세 변연 누출에 관한 비교 연구
김정욱
서울대학교 치과대학 소아치과학교실 및 치학연구소
Abstract
The purpose of this study was to compare the microleakage of the amalgam and the gallium alloy when several lining materials were applied. The ANA 2000, high copper lathecut type amalgam(AM group) and Gallium Alloy GF II (GF group) were used. The fifty extracted sound molars were randomly assigned to AM group and GF group, and the buccal and lingual class V cavities with a size 3×2×2mm were prepared. The prepared cavities were randomly assigned to group 1 : no liner used control, group 2 : Copalite, group 3 : Panavia 21, group 4 : All-bond 2, and group 5 : Superbond C&B. After liner placement and amalgam filling, the specimens were stored in 37℃ normal saline for 24 hours and then thermocycled from 5℃ to 55℃ thousand times. The specimens were stored in the 1% methylene blue solution for 24 hours and sectioned and examined by stereomicroscope. The results obtained from this study can be summarized as follows : 1. In the GF group, microleakage values of group 2, 3, 4, 5 were significantly lower than that of group 1 (p<0.05). 2. In the AM group, microleakage values of group 3 and 4 were significantly lower than that of group 1 (p<0.05), but microleakage values of group 2 and 5 did not differ from that of group 1 (p>0.05). 3. The GF group was similar(group, 1 3, 4) or superior(group 2, 5) to the AM group in the aspect of the microleakage.
Key Words: microleakage, amalgam, gallium alloy


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