| 외상성교합력이 성견치주조직에 미치는 영향에 대한 전자현미경적 연구 |
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김종관1, 채중규2 |
1연세대학교 치과대학 치주과학교실
2연세대학교 치과대학 치주과학교실 |
| AN ELECTRON MICROSCOPIC STUDY ON THE EFFECTS OF EXCESSIVE OCCLUSAL FORCE ON THE PERIODONTIUM OF DOGS |
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Chong-Kwan Kim1, Jung-Kiu Chai2 |
1Department of periodontics, School of Dentistry, Yonsei University
2Department of periodontics, School of Dentistry, Yonsei University |
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| Abstract |
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The purpose of this study was observe the effects of excessive occlusal force on gingival fibroblasts and collagen fibers of dog. The experiment was performed in 5 dogs. 1 dog was used as control and 4 dogs as experimental group. In experimental group, high Sun Platinum casting metal crowns with 2.0mm thick were placed artificially onto the upper right third premolars to create the traumatic occlusion. After 3, 7, 15, 30 experimental days, the specimens were examined under electron microscope. The following results were observed: 1. In 3, 7, 15 day groups, swelling of the mitochondria in the fibroblast was observed. 2. In 7, 14, day groups, dilation of the endoplasmicreticulum in the fibroblast was observed. 3. There were no remarkable changes in the nucleus of the fibroblasts and collagen fibers. 4. In 30 day group, the changes of the mitochondria and the ER in the fibroblast were recovered to have the similar appearance with that of the control group. |
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