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우식이환 상아질에 대한 all-in-one adhesive의 미세인장결합강도

Microtensile bond strength of all-in-one adhesive to caries-affected dentin

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참고문헌

주제분류치의학

초록

이 연구의 목적은 all-in-one adhesive인 Adper Prompt L-Pop과 Xeno Ⅲ를 우식이환 상아질에 다층 적용했을 때의 효과를 미세인장결합강도의 측정과 주사전자현미경을 이용한 파절양상의 관찰을 통해 알아보는데 있다. 교합면 우식이 있는 21개의 치아에서 편평한 상아질 면이 노출되도록 하여 감염 상아질을 제거한 후 3개씩 7개의 군으로 분류하였다. SM 군은 ScotchbondTM Multi-purpose를 적용하였다. LP1 군, LP2 군, LP3 군은 Adper Prompt L-PopTM을 각각 단층, 2층, 3층으로 적용하였다. XN1 군, XN2 군 XN3 군은 Xeno Ⅲ를 각각 단층, 2층, 3층으로 적용하였다. 각각의 상아질 접착제 처리 후, 광중합레진인 FiltekTM Z-250을 10 mm 높이로 적층 충전하였다. 각 치아는 가로와 세로의 길이가 각각 1 mm인 막대 모양의 절편이 되도록 수직으로 절단하였다. 그 후 미세인장결합강도를 측정하였다. 측정 후 파절된 시편을 주사전자현미경을 이용하여 파절양상을 살펴보았다. 각 군의 미세인장결합강도를 one-way ANOVA와 95% 신뢰도의 Scheffe’s Test를 이용하여 분석하였다. 이 연구의 결과는 다음과 같다. 1. 미세인장결합강도를 측정한 결과, SM 군은 14.38 ± 2.01 MPa, LP1 군, LP 2군, LP3 군은 각각 9.15 ± 1.81 MPa, 14.08 ± 1.75 MPa, 14.06 ± 1.45 MPa로 측정되었고, XN1 군, XN2 군, XN3 군은 각각 13.65 ± 1.95 MPa, 13.98 ± 1.60 MPa, 13.88 ± 1.66 MPa로 측정되었다. LP1 군은 다른 모든 군에 비해 낮은 미세인장결합강도를 나타내었고 (p < 0.05), LP1 군을 제외한 다른 모든 군 사이에는 유의한 차이가 없었다 (p > 0.05). 2. 파절양상을 관찰한 결과, LP1 군에서는 접착성 파절이 우세하게 나타났고, LP1 군을 제외한 다른 모든 군에서는 혼합형 파절이 주로 일어났다.

Abstract

The purpose of this study was to evaluate the effect of multiple application of all-in-one dentin adhesive system on microtensile bond strength to caries-affected dentin. Twenty one extracted human molars with occlusal caries extending into mid-dentin were prepared by grinding the occlusal surface flat. The carious lesions were excavated with the aid of caries detector dye. The following adhesives were applied to caries-affected dentin according to manufacturer's directions; Scotchbond Multi-Purpose in SM group, Adper Prompt L-PopTM 1 coat in LP1 group, 2 coats in LP2 group, 3 coats in LP3 group, Xeno Ⅲ 1 coat in XN1 group, 2 coats in XN2 group, and 3 coats in XN3 group. After application of the adhesives, a cylinder of resin-based composite was built up on the occlusal surface. Each tooth was sectioned vertically to obtain the 1 × 1 mm2 sticks. The microtensile bond strength was determined. Each specimen was observed under SEM to examine the failure mode. Data were analyzed with one-way ANOVA. The results of this study were as follows; 1. The microtensile bond strength values were; SM (14.38 ± 2.01 MPa), LP1 (9.15 ± 1.81 MPa), LP2 (14.08 ± 1.75 MPa), LP3 (14.06 ± 1.45 MPa), XN1 (13.65 ± 1.95 MPa), XN2 (13.98 ± 1.60 MPa), XN3 (13.88 ± 1.66 MPa). LP1 was significantly lower than the other groups in bond strength (p < 0.05). All groups except LP1 were not significantly different in bond strength (p > 0.05). 2. In LP1, there were a higher number of specimens showing adhesive failure. Most specimens of all groups except LP1 showed mixed failure.

참고문헌 (28)

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