Photoelastic Stress Analysis of Single Implant Restoration According to Implant Fixture Size and Abutment Diameter

단일치 임플란트에서 고정체와 지대주 직경의 차이에 따른 광탄성 응력 분석

  • Lee, Jin-Han (Department of Prosthodontics, College of dentistry, Wonkwang University) ;
  • Cho, Hye-Won (Department of Prosthodontics, College of dentistry, Wonkwang University)
  • 이진한 (원광대학교 치과대학 치과보철학교실) ;
  • 조혜원 (원광대학교 치과대학 치과보철학교실)
  • Received : 2008.05.06
  • Accepted : 2008.09.25
  • Published : 2008.09.30

Abstract

The purpose of this study was to evaluate the pattern and the magnitude of stress distribution in the supporting tissues surrounding implant fixture with different diameter of implant fixtures(3i implant, Ø4.0, Ø5.0, Ø6.0mm and UCLA abutments(Ø4.1, Ø5.0, Ø6.0mm using photoelastic stress analysis. Photoelastic model was made with PL-2 resin(Measurements Group, Raleigh, USA) and three implants of each diameter were placed in the mandibular posterior edentulous area distal to the canine. Individual crowns were fabricated using UCLA abutments. Photoelastic stress analysis was carried out to measure the fringe order around the implant supporting structure under simulated loading conditions(15 lb, 30 lb). The results were as follows; 1. The more the diameter of implant fixture was increased, the less the stress concentration on cervical area of fixture was observed under loading. 2. Increasing mesiodistal diameter of implant superstructure had no much influence on stress distribution around implant fixture. 3. The use of smaller abutment had no influence on stress distribution around implant fixture. The use of smaller abutment diameter than that of implant fixture had no favorable effect on implant supporting tissue at biomechanical consideration.

Keywords

photoelastic stress analysis;stress distribution

Acknowledgement

Supported by : 원광대학교

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