SHEAR BOND STRENGTHS BETWEEN ABRASION-RESISTANT DENTURE TEETH AND COMPOSITE RESINS

의치용 레진치와 수복용 복합레진 간의 결합강도에 관한 연구

  • Kim, Mee-Lee (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
  • Jeong, Chang-Mo (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
  • Jeon, Young-Chan (Department of Prosthodontics, College of Dentistry, Pusan National University) ;
  • Lim, Jang-Seop (Department of Prosthodontics, College of Dentistry, Pusan National University)
  • 김미리 (부산대학교 치과대학 보철학교실) ;
  • 정창모 (부산대학교 치과대학 보철학교실) ;
  • 전영찬 (부산대학교 치과대학 보철학교실) ;
  • 임장섭 (부산대학교 치과대학 보철학교실)
  • Published : 2002.04.01

Abstract

This study investigated the shear bond strengths between abrasion-resistant denture teeth and composite resins according to surface treatments. Denture teeth for this study were Trubyte IPN teeth(Dentsply Inc., USA) with interpenetrating polymer network and Endura Posterio (Shofu Inc. Japan) of composite resin teeth, and restorative composite resins were Clearfil FII (Kuraray, Japan) of the self-cured composite resin and Z100(3M Dental Product, USA) of the light-cured composite resin. Five different surface treatments were evaluated: (1) $50{\mu}m\;A1_2O_3$ sandblasting: (2) #100 carbide paper; (3) chloroform; (4) retentive holes; and (5) no treatment. After surface treatments, denture teeth were examined by scanning electron microscopy(SEM), and the maximum shear bond strengths between abrasion-resistant denture teeth and composite resins were measured using Instron. The results were as follows; 1. IPN teeth treated with sandblasting had the highest shear bond strength, and Endura treated with sandblasting and carbide paper had significantly greater shear bond strength than with any other surface treatment. 2. Regardless or composite resins, the shear bond strength on Endura was greater than on IPN teeth. 3. Regardless of denture teeth, the shear bond strength of Clearfil FII was greater han of Z100. 4. In appearance of SEM, IPN teeth treated with sandblasting showed generalized roughness on the all of surface, however, carbide paper treatment resulted in partly rough. Endura treated with sandblasting and carbide paper showed similar surface characteristics. Wetting denture teeth surface with chloroform removed the debris and created a particle-free and smooth surface.

Keywords

References

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