A STUDY ON THE METAL SURFACE TREATMENT OF RESIN BONDED RETAINERS

산부식가공의치(酸腐植架工義齒)의 금속피착면(金屬被着面)에 관(關)한 연구(硏究)

  • Park, Charn-Woon (Department of Prosthodontics, College of Dentistry, Chonbuk National University)
  • 박찬원 (전북대학교 치과대학 보철학교실)
  • Published : 1991.02.01

Abstract

The purpose of this study was to evaluate the tensile bond strengths of treated alloy surfaces for resin bonded retainers. For the experiment metal surfaces of 5 alloys were teated with sandblasting, Silicoating Rocatec, and cemented with Visio-Gem. All specimens divided into two groups. The group I specimens were treated with 24-hour immersion in $37^{\circ}C$ distilled water, and group II specimens were teated with 1500 thermo-cycles from $5^{\circ}C\;to\;55^{\circ}C$. The obtained results were as follows: 1. Bond strength values showed significantly different between sandblasting group and other groups after a 24-hour immersion in $37^{\circ}C$ distilled water(P<0.05). 2. All samples were fractured during thermo-cycles for sandblasting group, and bond strength values for Silicoating and Rocatec groups showed significantly different after 1500 thermo-cycles from $5^{\circ}C\;to\;55^{\circ}C$.

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