대한치과의사협회지 (The Journal of the Korean dental association)

  • 제54권11호
  • /
  • Pages.865-873
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  • 2016
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  • 0376-4672(pISSN)
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  • 2713-7961(eISSN)
대한치과의사협회 (The Korean Dental Association)
권호 표지

Effect of Nd:YAG laser irradiation on adherence of retrograde filling materials: evaluation by micro-computed tomography

  • 김민영 (연세대학교 치과대학 치과보존과학교실) ;
  • 김현철 (부산대학교 치의학전문대학원 치과보존과학교실) ;
  • 곽상원 (부산대학교 치의학전문대학원 치과보존과학교실) ;
  • 윤태철 (국민건강보험공단일산병원 치과보존과) ;
  • 김의성 (연세대학교 치과대학 치과보존과학교실)
  • Kim, Minyoung (Microscope Center, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Kim, Hyeon-cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Kwak, Sang Won (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Yoon, Tai Cheol (Department of Conservative Dentistry, National Health Insurance Service Ilsan Hospital) ;
  • Kim, Euiseong (Microscope Center, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University)
  • 투고 : 2016.08.16
  • 심사 : 2016.09.19
  • 발행 : 2016.11.01
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초록

Background/Purpose: The purpose of this study was to evaluate the effect of Nd:YAG irradiation on adherence of retrograde filling materials (mineral trioxide aggregate [MTA] and Super-EBA) by micro-computed tomography (CT) measurement and to observe the dentinal surface after irradiation by scanning electron microscopy (SEM). Materials and methods: Forty retrofilling models using extracted human teeth were divided into four groups according to the material and method used: ProRoot MTA (MTA group), Super-EBA (EBA group), MTA with Nd:YAG laser irradiation (LMTA group), and Super-EBA with Nd:YAG laser irradiation (LEBA group). All specimens were stored in 100% humidity for 24 hours until micro-CT was performed. The gap volume of the tooth/material interface was measured using the CTAn program. In six samples, the laser-irradiated dentin surface was observed using SEM. Results: The mean percent difference in gap volume was not statistically significant between the Nd:YAG laser-irradiated groups and non-irradiated in both materials(P > 0.05). The gap volume in the MTA group was significantly lower than that in the EBA group (P < 0.05). Examination of the non-irradiated specimens by SEM showed patent dentinal tubules. In contrast, alterations in the texture of the dentin surface and obliteration of the dentinal tubules were evident in the Nd:YAG laser-irradiated specimens. Conclusion: In this study, changes in the dentinal surface after Nd:YAG irradiation did not affect adherence between the apical filling material and the dentin wall.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea(NRF)

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