Resin-modified glass ionomer cements의 파절 및 전단결합강도에 관한 실험적 연구
An Experimental Study on the Fracture and Shear Bonding Strength of Resin-modified Glass lonomer Cements
소속 상세정보
김재골/Jae-Gon Kim
양철희/안수현/노용관/백병주/Cheol-Hee Yang/Soo-Hyeon An/Yong-Kwan Rho/Byeong-Ju Baik
KMID : 0358919980250010234
Abstract
결 론
4종의 resin-modified glass ionomer cement의 파절 및 결합강도를 평가하고, 복합레진과
conventional glass ionomer cement와 비교하기 위하여 원형시편을 이용한 이축 굽힘강도
및 우치순면 법랑질과 상아질에서의 전단 결합강도를 측정하였으며, 주사전자현미경으로 관
찰한 결과, 다음과 같은 결론을 얻었다.
1. Z 100의 이축 굽힘강도는 가장 높았으며, Fuji Ⅱ LC, Vitremer, Dyract 그리고
Compoglass는 Fuji Ⅱ보다 증가된 수치를 나타냈다(P<0.05).
2. 법랑질과 상아질에 대한 전단 결합강도 측정시 Z 100은 Fuji Ⅱ LC를 제외한 다른 실
험군보다 유의성있게 높았으며, Fuji H LC 는 Fuji Ⅱ보다 증가된 수치를 나타냈으나
(P<0.05), Vitremer, Dyract, Compoglass는 Fuji ll와 유사한 수치를 나타냈다 (P>0.05).
3. Z 100과 Fuji H LC의 법랑질에 대한 전단 결합강도는 상아질보다 높았으나(P<0.05),
Fuji Ⅱ, Vitremer. Dyract, Compoglass에서는 법랑질과 상아질간의 유의한 차이는 없었다
(P>0.05).
4. Z 100과 Fuji Ⅱ LC로 처리된 법랑질과 상아질은 명백하게 부식된 법랑질표면과 도말
층이 제거됨에 따라 상아세관의 노출을 보이는 상아질 표면이 관찰되었다.
#초록#
The purpose of this study was to compare the fracture and shear bonding strength of
resin-modified glass ionomer cements with composite resin and conventional glass
ionomer cement.
Three kinds of restorative materials including a composite resin (Z 100), a
convention-al glass ionomer cement(Fuji Ⅱ), and resin- modified 91ass ionomer
cements(Fuji Ⅱ LC, Vitremer, Dyract and Compoglass) were investigated in this study.
For measurement of fracture an(B shear bonding strength. disk samples of the
materials were prepared and cylindrical samples of the materials were bonded the flat
enamel and dentin surfaces according to manufactuer's instructions. All specimen were
determinated by using an Instron testing machine with a crosshead speed of 1 ㎜/min.
Then, each treated enamel and dentin surface was, observed by SEM.
The following results were obtained.
1. The hi-axial flexural strength of Z 100 was highest, and Fuji Ⅱ LC, Vitremer,
Dyract and Compoglass were significantly higher than Fuji Ⅱ (P<0.05).
2. The shear bonding strength of j: 100 on the enamel and dentin surface was higher
than other experimental groups except Fuji Ⅱ LC(P<0.05). Fuji H LC was significantly
higher than Fuji Ⅱ (P(0.05), but in the case of Vitremer, Dyract and Compoglass were
similar to Fuji If (P>0.05)
3. The shear bonding strength of Z :100 and Fuji Ⅱ LC on the enamel surface were
highly increased as compared with dentin surface (P<0.05), but in the case of Fuji Ⅱ,
Vitremer. Dyract and Compoglass were not different between enamel and dentin (
P>0.05).
4. In the Z 100 and Fuji Ⅱ LC, obvious etched enamel surface and exposed dentinal
tubules according to remove of smear layer and smear plug were observed.
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