Repaired glass ionmer cement의 결합강도에 관한 연구
A study on the bond stregth of repaired glass ionomer cements
서수정, 김신,
소속 상세정보
서수정 ( ) - 부산대학교 의과대학 정형외과학교실
김신 ( ) - 부산대학교
KMID : 0358919960230020347
Abstract
The purpose of this study was to compare the bond strengths of different kinds of glass ionomer cements (GIC), which is recently increasing the clinical application in the field of pediatric dentistry and measure the repaired bond strengths in
order to
examine the clinical applicatilty of partial repaired cases.
By using one kind of the light cured type GIC and three kinds of the chemical cured type GIC, the bond strengths of the followings were compared : unrepaired group as control, repaired conditioning group, which was treated the repaired surface
using 25%
polyacrylic acid and repaired non-conditioning group without surface treatment. Three point bending test was performed under Universal Testing Machine in order to measure the compressive bond strengths.
@ES The results were as follows :
@EN 1. Light cured GIC had higher bond strength than chemical sured type GIC in both of repaired and unrepaired groups.
2. In repaired cases, all of the materials decreased the bond strength when compared to the control group. In the light cured type, the bond strength of repaired conditioning group decreased 31.6%, repaired non-conditioning group decreased
40.8%.
In
chemical cured types, the bond strength of repaired conditining group decreased 11.8%, repaired non-conditioning group decreased 20.9%.
3. All the materials, in the case of the chemical treatment on the repaired surface using 25% polyacrylic acid had higher bond strength than untreated but, lower than control group.
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