Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Effect of Conditioning Methods on the Shear Bond Strength of Veneering composite on Zirconia Ceramic

Y-TZP ceramic의 표면처리에 따른 전장용 레진의 전단결합강도

  • Nam, Hyun-Seok (Department of Prossthodontics, School of Dentistry, Chonbuk National University) ;
  • Song, Kwang-Yeob (Department of Prossthodontics, School of Dentistry, Chonbuk National University) ;
  • Ahn, Seung-Geun (Department of Prossthodontics, School of Dentistry, Chonbuk National University) ;
  • Park, Ju-Mi (Department of Prossthodontics, School of Dentistry, Chonbuk National University)
  • 남현석 (전북대학교 치의학 전문대학원 치과보철학교실) ;
  • 송광엽 (전북대학교 치의학 전문대학원 치과보철학교실) ;
  • 안승근 (전북대학교 치의학 전문대학원 치과보철학교실) ;
  • 박주미 (전북대학교 치의학 전문대학원 치과보철학교실)
  • Received : 2010.06.18
  • Accepted : 2010.09.25
  • Published : 2010.09.30
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Abstract

The purpose of this study is to know whether Yttrium-stabilized-tetragonal -zirconia-polycrystal(Y-TZP ceramic) gets enough shear bond strength for clinical uses by applying veneering composite resin through surface treatment on it and finally to compare it with the case of applying veneering porcelain. LavaTM zirconia frameworks(3M ESPE, Seefeld, Germany) were prepared. Group P was manufactured with LavaTM Ceram(3M ESPE, Seefeld, Germany) in cylindrical shape which has 4mm diameter, 5mm height. Group ZSR disposed sandblasting and applied silane, bonding agent and after that indirect composite resin was applied. Group ZRR got tribochemical coating by RocatecTM system(3M ESPE. Seefeld, Germany) and treated silane. Finally Group ZPR took the same treatment and applied LavaTM Ceram in the size of 0.3-0.5mm height. After burning out, sandblasting, HF and silane was applied. And then, indirect composite resin was applied. 1000 cycle thermocycling was performed in $5-55^{\circ}C$ and shear bond strength was measured. There were no significant differences between combining veneering porcelain to Y-TZP ceramic group and combining veneering resin to Y-TZP ceramic group in the aspect of shear bond strength (p>.05).

최근 개발된 Yttrium-stabilized-tetragonal-zirconia-polycrystal(Y-TZP ceramic)은 생체 친화적이며 높은 굴곡 강도, 파절 저항성, 파괴 인성을 지니고 CAD-CAM을 통해 milling이 가능하여 많은 치과 영역에서 사용되고 있다. 구치부 zirconia framework을 사용하는 고정성 수복물의 경우에는 상부 장석 도재의 상대적으로 높은 빈도의 파절을 보이고 있다. 복합레진은 취성이 적고 법랑질 보다 마모도가 낮으며 수리가 용이하다. 높은 교합압 부위에서 전장용 복합레진을 사용한 임플란트 수복은 기능적인 장점을 지니며 흥미롭게 여겨지고 있다. 이번 연구의 목적은 Y-TZP ceramic에 몇 가지 표면 처리를 시행하여 전장용 복합레진을 적용 시켰을 때 도재 전장시과 비교하여 임상적 활용을 위한 유용한 전단결합강도를 지니는지를 알고자 함이다.

Keywords

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