Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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A Study on the Tensile Strength between Light-cured Relining Resin and Metal Denture Base

광중합형 이장재와 금속의치상 간의 결합력에 관한 연구

  • Park, In-Chae (Dept. of Prosthodontics and Oral Biology Research Institute School of Dentistry, Chosun University) ;
  • Lee, Joon-Kyu (Dept. of Prosthodontics and Oral Biology Research Institute School of Dentistry, Chosun University) ;
  • Chung, Chae-Heon (Dept. of Prosthodontics and Oral Biology Research Institute School of Dentistry, Chosun University)
  • 박인채 (조선대학교 치과대학 보철학교실 및 구강생물학연구소) ;
  • 이준규 (조선대학교 치과대학 보철학교실 및 구강생물학연구소) ;
  • 정재헌 (조선대학교 치과대학 보철학교실 및 구강생물학연구소)
  • Published : 2000.09.30
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Abstract

The use of autopolymerizing-cured resin and light-cured resin for direct relining of complete and partial dentures has been popular. This investigation compared the adhesion of autopolymerizing-cured reline resin(Tokuso Rebase, Mild Rebaron) or light-cured reline resin(Mild Rebaron LC, Lighton-U) to metal base or resin base. Cylindrical samples were made from metal($Biosil^{(R)}$) or heat-cured resin(QC-20) and were prepared to produce a flat bonding surface. Cylindrical metal samples were roughened by scratch or by scratch and sandblast and were treated with primer(MR Bond) after scratch and sandblast. And then, liners were prossesed to the cylindrical metal or resin samples according to the manufacturer's recommendations so as to bond metal base or resin base. The specimens were tested in pure tension by using an Instron Univesal testing machine for the four direct reline resins. The results were as follows ; 1. In comparison with tensile bond strength of material relined on resin base or metal base, the case of resin base produced significantly higher tensile bond strength than the case of metal base. 2. Metal surface pretreatment or primer improved the tensile bond strength between the reline resin and the metal($Biosil^{(R)}$) base. 3. The tensile bond strength of Mild Rebaron LC relined on resin base or metal base were similar to those of the other reline resins.

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