Restorative Dentistry and Endodontics

  • 제28권6호
  • /
  • Pages.467-474
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  • 2003
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  • 2234-7658(pISSN)
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  • 2234-7666(eISSN)
대한치과보존학회 (The Korean Academy of Conservative Dentistry)
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치경부변연에서 중간층 수복이 구치부 2급 복합레진의 미세누출에 미치는 영향에 관한 연구

Microleakage at the cervical margin of Class II composite restorations with different intermediate layer treatments

  • 김기옥 (건국대학교 의과대학 치과학교실)
  • Kim, Ki-Ok (Department of Dentistry, College of Medicine, Konkuk University)
  • 발행 : 2003.11.01
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초록

복합레진에 의한 구치부 2급 와동의 수복에서 치은부 변연이 법랑-백아 경계 하방에 위치하는 경우 복합레진의 중합 수축에 의한 응력은 변연부의 폐쇄능력을 저하시키고 이로인한 미세누출은 2차적인 우식이나 술후과민증을 일으켜 임상에서의 성공을 위협한다. 본 연구에서는 2급 와동에서 복합레진으로 수복하기 전에 치은 변연부를 중합수축에 의한 응력을 완화시킬 수 있는 것으로 알려진 몇가지 재료들을 중간층으로 먼저 충전한 후 충전용 복합레진으로 충전한 뒤 치은부 변연에서 이들 중간층과 치질 사이의 미세누출의 정도를 비교하였다. 20개의 발거된 구치의 근, 원심면에 각각 상자 모양의 2급 와동을 형성하고 40개의 와동을 무작위로 10개씩, 4개의군으로 나누었다. 1군은 중간층의 수복없이 Clearfil SE Bond과 Clearfil AP-X로 충전하였으며 2, 3 및 4군은 중간층으로 각각 Revolution, Dyract그리고 FujiII LG를 먼저 충전한 후 1군과 동일한 방법으로 복합레진을 충전하였다. 충전된 시편은 열순환후 2% methylene blue 용액에 12시간 침잠시킨 후 색소의 침투도를 stereomicroscope로 관찰하였으며 실험결과는 Kruskal-Wallis non-parametric independent analysis 및 Mann-Whitney U test로 통계분석하여 다음의 결론을 얻었다. 1. 레진강화형 글라스아이오노머를 중간층으로 먼저 수복하고 복합레진으로 충전한 경우에서 더 적은 미세누출을 보였다(p<0.05). 2. 유동성 레진과 콤포머를 중간층으로 수복한 경우와 복합레진만으로 수복한 경우는 미세누출에 있어서 유의한 차이를 나타내지 않았다(p>0.05).

키워드

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피인용 문헌

  1. Effect of pre-heating on some physical properties of composite resin vol.34, pp.1, 2009, https://doi.org/10.5395/JKACD.2009.34.1.030