임프란트시술시 전기자극이 골조직 형성에 미치는 영향
EFFECTS OF ELECTRICAL S T IM U 니 ON BONE FO RM ATION IN IM P LA N T A T IO N
배창,
소속 상세정보
배창 ( Bae Chang ) - Catholic University College of Medicine Department of Dentistry
KMID : 0362819910110010001
Abstract
It is well known that the electrical current stimulates production or destruction of cell and change the chemical concentration and composition of the soft tissue and bone. These actions vary depending on the microamperage, duration of current, and how to apply to tissue. This experiment was performed to study the effects of electrical stimuli on bone formation in implantation and clinical use in future.
I used the Steri-oss implant consisting of commercial pure titanium and New Zealand white rabbit, and delivered the 10± 3jjA, in the control and experimental group which were divided into cathode and anode.
Rabbits were sacrificed at the 1st, 2nd and 3rd week after implantation and electrical stimuli. I observed histologically the cellular response and bone formation by light microscope.
The results were as follows.
1. There were more new bone formation and osteoblastic activity at the 2nd week than control group at the 1st week.
The mature bone formation was focally found at the 3rd week.
2. In experimental cathod group, the most numerous osteoblast and actively proliferating trabecular bone were found at the 1st week. The newly formed trabecular bone at the 2nd week was composed of mature appearing lamellar bone and the thick mature bones were largely present at the 3rd week.
3. No new bone formation was found in experimental anode group, and the foci of necrotic bone was found with increasing time.
4. A little fibrosis was found around the fixture of steri-oss although they were exactly fitted in the hole.
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