AN EXPERIMENTAL STUDY FOR MICROLEAKAGE OF AMALGAM USING RESIN ADHESIVE LINERS IN PRIMARY MOLAR TOOTH

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Journal of the Korean Academy of Pediatric Dentistry 1996;23(2):401-414.
Published online May 31, 1996.

AN EXPERIMENTAL STUDY FOR MICROLEAKAGE OF AMALGAM USING RESIN ADHESIVE LINERS IN PRIMARY MOLAR TOOTH

유구치 아말감 수복물에서 레진 접착성 이장재의 미세 변연 누출에 관한 비교 연구

김종태, 최병재, 이제호, 이종갑

연세대학교 치과대학 소아치과학교실

Abstract

The purpose of this study was to compare the marginal leakage of resin liner which was used as a liner to amalgam restoration. Control group composed of no liner group, copalite group and experimental group composed of All-bond 2, Vitrebond, Superbond D-liner applied groups were evaluated. Cl.V preparation with a size of 3×2×1.5mm on 70 extracted primary molars were made and applied appropriate liners for each groups. After amalgam filling and polishing, polished specimens underwent temperature changed from 5℃ to 55℃ a thousand times. After thermocycling, specimens were placed in 2% methylene blue dye solution for 72 hours in an incubator set at 37℃. The teeth were sectioned buccolingually and the degree of dye penetration was observed with a spectroscopy. (×30) The following results were obtained. 1. Vitrebond, All-bond 2, Superbond D-liner group exhibited a statistically significant lower degree of dye penetration than no liner and copalite group. (Kruskal-Wallis analysis, P<0.05) 2. No liner group and copalite group exhibited a similar degree of dye penetration. (Mann-Whitney analysis, P>0.05) 3. All-bond 2 group exhibited a statistically significant lower degree of dye penetration than Vitrebond group, (Mann-Whitney analysis, P<0.05) Superbond D-liner group also exhibited a lower degree of dye penetration than Vitrebond group but was statistically insignificant. (Mann-Whitney analysis, P>0.05)