Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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EFFECT OF RESIN SEALANTS ON THE REDUCTION OF MICROLEAKAGE IN COMPOSITE RESTORATIONS

복합레진 수복물의 미세누출 감소를 위한 레진 전색제의 효과

  • Cho Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Kim Mun-Hong (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Lee Myung-Goo (Department of Conservative Dentistry, College of Dentistry, Chosun University)
  • 조영곤 (조선대학교 치과대학 치과보존학교실) ;
  • 김문홍 (조선대학교 치과대학 치과보존학교실) ;
  • 이명구 (조선대학교 치과대학 치과보존학교실)
  • Published : 2006.07.01
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Abstract

The purpose of this study was to compare the ability of three resin surface sealants to prevent microleakage in Class V composite resin restorations. Forty Class V cavities with the occlusal margin in enamel and gingival margin in dentin were prepared on the buccal surfaces of sound extracted molars, and restored with composite resin. Restorations were randomly assigned into one of four equal groups (n = 10): a control group, without resin sealing, and three experimental groups in which margins were sealed with Fortify Plus, Biscover and Permaseal, respectively. Specimens were thermocycled, immersed in a 2% methylene blue solution for 4 hours, sectioned longitudinally, and observed the leakage at the occlusal and gingival margins. The result was analyzed using Kruskal-Wallis test, Mann-Whitney test and Wilcoxon signed rank test. In conclusion, the ability to reduce microleakage at occlusal margins was similar in all of three sealants. However at gingival margin, it depended on the type of used resin surface sealant. At gingival margin. control and Fortify Plus group showed statistically higher microleakage than PermaSeal group. and Fortify Plus group also showed higher microleakage than BisCover group (p < 0.05).

본 연구의 목적은 5급 복합레진 수복물에 각종 레진 전색제를 적용한 후, 수복물의 교합면측과 치은측 변연 미세누출에 대한 레진 전색제의 감소효과를 평가하기 위하여 시행하였다. 40개의 발거된 대구치의 협면 치경부에 5급 와동을 형성하고 복합레진을 충전한 후, 사용된 레진 전색제에 따라 다음 과 같이 4개의 군으로 분류하였다; 복합레진 표면과 변연부에 레진 전색제를 적용하지 않은 대조군, 복합레진 표면과 변연부에 각각 레진 전색제를 적용한 Fortify Plus 군, BisCover 군 및 PermaSeal 군으로 분류하였다. 각 군의 시편을 실온의 증류수에 24시간 동안 보관한 후, $5^{\circ}C$와 $55^{\circ}C$에서 1,000회의 열 순환을 시행하고 2% methylene blue 용액에 4시간동안 침적시켰다. 각 치아는 저속의 diamond disk 를 이용하여 각 수복물의 중앙부를 따라 협, 설 방향으로 양분 하고 20배율의 광학 입체현미경 하에서 각각 교합면측과 치은측 변연 미세누출을 평가하였다. 각 군의 교합면측과 치은측 변연 미세누출에 대한 유의성을 검정을 시행하여 다음과 같은 결과를 얻었다. 1. 교합면측 변연 미세누출은 사용된 레진 전색제 간에 통계학적으로 유의한 차이를 나타내지 않았다. 2. 치은측 변연 미세누출은 대조군과 Fortify Plus 군이 PermaSeal 군보다 통계학적으로 높게 나타났으며, 또한 Fortify Plus 군은 Biscover 군보다 통계학적으로 높은 변연 미세누출을 나타내었다 (p < 0.05). 3. 대조군과 Fortify Plus 군은 교합면측 보다 치은측 변연에서 통계학적으로 더 높은 미세누출을 나타내었다 (p < 0.05). 4. BisCover 군과 PermaSeal 군은 교합면측과 치은측의 변연 미세누출 간에 통계학적으로 유의한 차이를 나타내지 않았다. 본 연구를 종합하면, 5급 복합레진 수복물의 교합면측 변연 미세누출에 대한 레진 전색제의 감소효과는 크게 나타나지 않았지만, 치은측 변연 미세누출에 대한 레진 전색제의 감소효과는 사용된 레진 전색제에 따라 서로 다르게 나타났다.

Keywords

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  2. A survey on the use of composite resin in Class II restoration in Korea vol.34, pp.2, 2009, https://doi.org/10.5395/JKACD.2009.34.2.087
  3. Influence of rebonding procedures on microleakage of composite resin restorations vol.35, pp.3, 2010, https://doi.org/10.5395/JKACD.2010.35.3.164