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犬下顆骨에 移植된 TITANIUM 大工齒牙의 周圍組織反應에 關한 病理組織學的 研究 가톨릭 醫科大學 齒科學教室
崔牧均,表雅,李鳳遠,朴金沫 대한치과이식임플란트학회 1984 The Korean Academy of Implant Dentistry Vol.5 No.1
The authors observed the histopathological tissue reaction to the Free Design Blade-vent Implants made of pure titanium in the mandibles of dogs. The mandibular left 2nd, 3rd premolar teeth in 4 healthy dogs (4045kg B.W.) were removed. Twelve weeks after the extraction, the F.D.B.I. were implanted into the extracted premolar areas.S ix months after the implantation, the tissue blocks containing the implants were removed. These block sections were fixed in 10% neutral buffered formalin for 2 days and decalcified in 5% trichloracetic acid. The buccal side of the blocks were removed with a knife and F.D.B.I. were detached to buccal from the tissue blocks • Then the implants were prepared and examined in scanning electron microscope. The tissue blocks were embedded by paraffin embedding method and then sectioned by 7m. They were stained with hematoxylin and eosin. The obtained results were as follows: 1. The rete pegs of the epithelium around the sulcus were increased and the inflammatory calls were infiltrated in the connective tissue beneath the sulcular epithelium. 2. There was no fibrous capsule between the titanium and the bone. 3. Compact bone and spongy bone were formed around the titanium. Haversian system, new bone formation by osteoblast, and bone resorption by the osteoclast were observed in the bone. There was no osseous abnormality. 4. On the scanning electron microscope observation, epithelial cells were attached on the neck of titanium implants, that is, mechanical stress results in tearing within epithelium (or periimplant cervical tissue), rather than in a clean separation of the epithelium from implant surface. 5. From this study, it is concluded that force of epithelial attachment of titanium implants is almost equal to the natural teeth and that titanium implant is biocompatible with the living tissue.
시멘트 종류에 따른 티타늄 임프란트에 대한 주조체의 유지력
崔牧均,聚昶,崔丙哲,金光兹 대한치과이식임플란트학회 1989 The Korean Academy of Implant Dentistry Vol.9 No.1
The purpose of this investigation was to test the retention of the castings to titanium implants in dental cements. After making copings with type IE gold, noble metal alloy for ceramics and base metal alloy for ceramics, we cemented them on the abutment of titanium implant with zinc phosphate cement, polycarboxylate cement and glass ionomer cement, and then tested the retention force on an Instron. The results of this study were as follows: 1. The zinc phosphate cement was distinctly superior to polycarboxylate cement and glass ionomer cement regardless of types of alloy in retentive force. 2. There was no statistically significant difference between polycarboxylate cement and glass ionomer cement. 3. Little difference was observed in the retentive forces of three types of alloy regardless of cements.
기능적 긴장이 Endosseous Titanium Implant 주위의 결체조직성 피막형성에 미치는 영향
최목균,배창,박금수 대한치과이식임플란트학회 1985 The Korean Academy of Implant Dentistry Vol.6 No.1
In order to investigate the influence of functional stress on the tissue reaction around the implants, the tissues around functional, and non-functional endosseous titanium blade-vent implants were observed histologically for up to one year postoperatively. The mandibular left 2nd, 3rd premolar teeth in 4 healthy dogs (about 40 kg B.W.) were removed. Twelve weeks after extraction, titanium implants were implanted into the extracted area. Two implants which had smaller posts compared with natural teeth were implanted very deeply, not to be functional, into the mandibles of the dogs. But the other two implants had relatively large posts, and these were implanted so as to receive functional stress. One year after the implantation the tissue blocks containing the implants were removed. These block sections were fixed in 10% neutral buffered formalin for 2 days and decalcified in 15% formic acid. The buccal side of the blocks were removed with the knife and the implants were detached to the buccal side. The tissue blocks were embedded by paraffin embedding method and then sectioned by 7 /Jim. They were stained with hematoxylin and eosin. The obtained results were as follows. 1. Two layers of fibrous capsule existed around the functional implants. Collagen fibers of the implant-side layer were parallel with the implant surface, and perpendicular or irregular in the bone-side layer. 2. No fibrous capsule was observed around the non-functional implants. The osseous tissue interfaced with titanium was normal compact bone. In this study, existence of fibrous capsule was suggested to have correlation with functional stress.