A STUDY OF CHIDED TISSUE REGENERATION FOR IMMEDIATE IMPLANTATION WITH/WITHOUT HA AUGMENTATION : A STUDY IN DOGS

성견에서 발치 직후 Titanium plasma sprayed IMZ 임프란트 이식시 조직유도 재생술에 따른 골 재생력에 관한 연구

  • Hwang Hie-Seong (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Chung Moon-Kyu (Department of Prosthodontics, College of Dentistry, Yonsei University)
  • 황희성 (연세대학교 치과대학 보철학교실) ;
  • 정문규 (연세대학교 치과대학 보철학교실)
  • Published : 1992.10.01

Abstract

The purpose of this investigation was to evaluate the effect of the porous hydroxyapatite particles (Interpore $200^{(R)}$) and guided tissue regeneration membrane ($Gore-Tex^{TM}$ augmentation material) on amount and shape of generating new bone adjacent to implant. Implants were placed immediately after extraction in the bilateral 3rd, 4th premolars of the mandible of the adult dogs. In all experimental groups, artificial bony defects were formed at the buccal cortex area, 3.3mm in width and 3.0mm in depth. In the control group : sutured without HA particles & membranes after placing implants, the experimental group 1 : membrane was place over the artificial bony defect, the experimental group 2 : bony defect was filled with HA particles and covered with membrane. The examination of bone-implant interfaces using light microscope and fluorescent microscope concluded as follows. 1. In all three experimental groups, osseointegration was observed without epithelial migration. 2. In the healing degree of bony defect area, the experimental group 1, 2 showed more prominent healing than control group, and the experimental group 1 showed the most excellent bone formation. 3. In fluorescent microscopic finding, bone remodeling was observed in regenerated bone tissue at defect area of experimental group 1, but in experimental group 2, irregular, discontinuous linear fluorescence was observed at the lower portion of defect area and sign of bone remodeling was weak.

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