Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

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

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
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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.

이 연구의 목적은 임플란트 고정체와 지대주간의 직경 차이가 임플란트 지지조직에 발생하는 응력에 미치는 영향을 평가 하는 것이다. 본 연구에는 세 가지 직경(4.0, 5.0, 6.0㎜)의 3i 임플란트 고정체에 지대주의 직경을 달리하여 수복하고, 하중 조건(15, 30 lb)에 따라 임플란트 지지조직에 발생한 응력의 정도와 분포를 광탄성 응력 분석법을 이용하여 비교, 분석하였다. 연구결과 고정체의 직경이 증가할수록, 상부 보철물에 가해지는 하중에 대하여 고정체 변연부의 응력집중이 높게 나타났으며, 상부 보철물의 근원심 폭경을 증가시키는 것이나, 임플란트 고정체의 직경에 비해 작은 지대주를 사용하는 것은 고정체 주위의 응력양상에 영향을 주지 않았다.

Keywords

Acknowledgement

Supported by : 원광대학교

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