PHOTOELASTIC STRESS ANALYSIS OF LOAD TRANSFER TO SATELLITE ABUTMENT AS AN IMMEDIATE ABUTMENT

인공치아의 즉시부하를 위해 새로이 개발된 인공치아 지대주(Satellite Abutment)의 광탄성 응력 분석

  • Park, Sang-Kyu (Department of Oral & Maxillofacial Surgery, Kyung-Hee University) ;
  • Lee, Baek-Soo (Department of Oral & Maxillofacial Surgery, Kyung-Hee University) ;
  • Engelke, W (Department of Oral Surgery, School of Dentistry, Gottingen University) ;
  • Kim, Boo-Dong (School of Mechanical Design & Manufacturing Automation, Seoul National University of Technology)
  • 박상규 (경희대학교 치과대학 구강악안면외과학교실) ;
  • 이백수 (경희대학교 치과대학 구강악안면외과학교실) ;
  • ;
  • 김부동 (서울산업대학교 기계설계자동화공학부)
  • Published : 2002.12.31

Abstract

Since $Br^{\circ}anemark$ introduced the osseointegrated implants, they have been granted for useful methods for the restoration of oral function. The original $Br^{\circ}anemark$ protocol recommended long stress-free healing periods to achieve the osseointegration of dental implants. However, many clinical and experimental studies have shown that the osseointegration is no wonder in almost cases and that early and immediate loading may lead to predictable osseointegration. So we are willing to introduce the Satellite Abutment newly invented for immediate loading. We think that it will make the occlusal forces dispersed to surrounding bone and that we can restore the oral function immediately after implant installation not disturbing osseointegration. In case of using Satellite abutment, stress concentrated to bone contact area of implant was distributed not only fixation plate and screws but also superior, middle portion of implant and cortical layer of jaw bone. It was clearly decreased on the bone contact surfaces around dental implants. 1. Stress was decreased more than 76.5% when satellite straight abutment was used. 2. Stress was decreased more than 50% when satellite angled abutment was used. 3. The stress around dental implant was well distributed along the cortical bone surface and the fixation plate and screw. This study concludes that satellite abutment can be used as all immediate loading implant prothesis because it was possible to distribute periimplant occlusal stress through implant contact bone surface and cortical layer of jaw bone.

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