상아질 접착제의 미세누출에 관한 연구 = A STUDY ON THE MICROLEAKAGE OF DENTIN BONDING SYSTEMS

국문 초록 (Abstract)

본 연구는 여러가지 상아질 접착제들의 법랑질 변연과 상아질 변연에서의 미세누출을 비교 평가하기 위해 이루어졌다. 발거된 건전한 영구치의 협면과 설명에 5급 와동을 형성하고 형성된 50개의 와동을 무작위로 5개의 군으로 나누어 각군에 Adper™ Scotchbond™ Multi-purpose Plus Adhesive (SM; 3M ESPE. USA), Adper™ Single bond 2 (SB; 3M ESPE, USA), Clearfil™ SE Bond (SE; Kuraray Medical Inc., Japan), Adper™ Prompt™ L-Pop™ (PL; 3M ESPE, USA), G-Bond™ (GB; GC Co., Japan)를 적용하고 Filtec™ Z350 A3 (3M ESPE. USA)로 충전하였다. 시편을 37℃ 증류수에 24시간 보관한 후 5℃와 55℃에서 10초씩 1000회 열순환하고 2% methylene blue 용액을 24시간 넣어 염색한 뒤, 주수 하에 치아를 협설로 절단하여 색소의 침투 정도를 화상분석현미경을 이용하여 침투깊이를 측정한 뒤 각 군간의 미세누출 정도를 비교하여 침투깊이에 따라 0~3점으로 분류하여 다음과 같은 결과를 얻었다.
1. 범랑질 변연에서의 미세누출은 PL(0.85), SB(0.55), GB(0.50), SM(0.35), SE(0.25) 순이었으며 PL은 SM 및 SE와 통계학적으로 유의한 차이를 나타냈다(p<0.05).
2. 상아질 변연에서의 미세누출은 GB(2.10), SE(1.45), PL(1.40), SB(1.05), SM(0.70) 순이었으며 GB는 SB 및 SM과 통계학적으로 유의한 차이를 나타냈다(p<0.05).
3. 각 실험재료 군내에서 법랑질 변연에 비해 상아질 변연에서 미세누출이 더 크게 나타났으며, SE, PL, GB에서 통계학적으로 유의한 차이를 나타냈다(p<0.05).

다국어 초록 (Multilingual Abstract)

The objective of this study was to compare the microleakage of five adhesive systems in the enamel and dentin of permanent teeth.
Class V cavity preparations with occlusal margins in enamel and gingival margins in dentin were prepared on both buccal and lingual surfaces of 25 extracted human molar teeth. The tested adhesives were: Adper Scotchbond Multi-purpose Plus Adhesive (SM), Adper Single bond 2 (SB), Clearfil SE Bond (SE), Adper Prompt L-Pop (pL) and G-Bond (GB).
The results were as follows:
1. At the enamel margins, PL showed the highest leakage value(0.85), and others showed values of SB(0.55), GB(O.50), SM(O.35) and SE(0.25) in decreasing order. There were statistically significant differences in PL vs. SM and PL vs. SE(p<O.05).
2. At the dentin margins, GB showed the highest leakage value(2.10), and others showed values of SE(1.45), PL(1.40), SB(1.05), SM(0.70) in decreasing order. There were statistically significant differences in GB vs. SB and GB vs. SM(p<O.05).
3. Dentin margins showed high dye penetration rate than enamel margins in all material tested groups and there were statistically significant differences for SE, PL and GB.

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