Restorative Dentistry and Endodontics

  • 제32권4호
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  • Pages.327-334
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  • 2007
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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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삭제기구가 자가 산부식 접착제의 미세누출에 미치는 영향

EFFECT OF MICROLEAKAGE OF A SELF-ETCHING PRIMER ADHESIVE ACCORDING TO TYPES OF CUTTING INSTRUMENTS

  • 김용희 (조선대학교 치과대학 치과보존학교실) ;
  • 박재구 (조선대학교 치과대학 치과보존학교실) ;
  • 조영곤 (조선대학교 치과대학 치과보존학교실)
  • Kim, Yong-Hee (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Park, Jae-Gu (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Cho, Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University)
  • 발행 : 2007.03.31
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초록

이 연구는 서로 다른 카바이드 버와 다이아몬드 버로 5급 와동을 형성 한 후 SE primer 접착 시스템인 Clearfil SE Bond를 이용한 복합레진 수복 시 버의 종류에 따른 법랑질과 상아질 변연에서의 미세누출 차이를 상호 비교하기 위하여 시행하였다. 4종의 삭제기구를 이용하여 각각 10개의 발거된 대구치의 협면 치경부에 5급 와동을 형성하였다. 1군은 plain-cut carbide fissure bur (no. 245)를 사용한 군, 2군은 cross-cut carbide fissure bur (no. 557)를 사용한 군, 3군은 fine diamond bur (TF-21F: 입자크기 $53\;-\;63\;{\mu}m$)를 사용한 군, 4군은 standard diamond bur (EX-41: 입자크기 $106\;-\;205\;{\mu}m$)를 사용한 군으로 분류하였다. 형성된 와동에 Clearfil SE Bond의 Primer와 Bond를 적용하고 Clearfil AP-X 복합레진을 충전하여 광중합한 후, Sof-Lex disc를 이용하여 마무리와 연마를 시행하였다. 수복된 치아를 2% methylene blue 용액에 24시간 동안 침적시킨 후 각 군의 치아를 협설로 절단하여 광학 입체현미경 하에서 법랑질과 상아질 변연에서의 미세누출 점수를 평가하여 다음과 같은 결과를 얻었다. Clearfil SE Bond와 복합레진을 이용한 5급 와동 수복 시 거친 다이아몬드 버의 사용은 카바이드 버나 미세한 다이아몬드 버에 비해 법랑질과 상아질 변연 모두에서 높은 미세누출을 나타내었다.

The purpose of this study was to evaluate the effect of burs on microleakage of Class V resin restorations when a self-etching primer adhesive was used. Forty Class V cavities were prepared with four different cutting burs on extracted third molars, and divided into one of four equal groups (n = 10); Group 1-plain cut carbide bur (no. 245), Group 2-cross cut carbide bur (no. 557), Group 3-fine diamond bur (TF-21F), Group 4-standard diamond bur (EX-41). The occlusal and gingival margin of cavities was located in enamel and dentin, respectively. Cavities were treated with Clearfil SE Bond and restored with Clearfil AP-X. Specimens were thermocycled, immersed in a 2% methylene blue solution for 24 hours, and bisected longitudinally. They were observed leakages at enamel and dentinal margins. Data were analyzed using Mann-Whitney and Wilcoxon signed ranked test. The results of this study were as follows; 1. At enamel margin, microleakage of group 4 was statistically higher than those of group 1, 2 and 3 (p < 0.01). 2. At dentinal margin, microleakage of group 4 was statistically higher than group 3 (p < 0.01), but group 1 and 2 were not statistically different with group 3 and 4. 3. Enamel microleakage was statistically higher than dentinal microleakage in group 1, 2 and 3 (p < 0.05), but statistical difference between the microleakage of enamel and dentinal margin was not in Group 4. In conclusion, the use of coarse diamond bur showed high microleakage at both enamel and dentinal margin when Clearfil SE Bond was used in class V cavity.

키워드

참고문헌

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피인용 문헌

  1. Effect of cutting instruments on the dentin bond strength of a self-etch adhesive vol.35, pp.1, 2010, https://doi.org/10.5395/JKACD.2010.35.1.013
  2. Microshear bond strength of a self-etching primer adhesive to enamel according to the type of bur vol.36, pp.6, 2011, https://doi.org/10.5395/JKACD.2011.36.6.477