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외상성 교합력이 성견 치근표면에 미치는 영향에 대한 주사 현미경적 연구

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[한글] 저자는 5마리의 성견에서 하악 우측 제3소간치에 금관을 장착하여 외상성 교합력을 유 발시킨 후 3일, 7일, 15일, 30일 후 치근 표면의 변화를 주사 전자 현미경을 이용하여 관 찰한 결과 다음과 같은 결론을 얻었다. 1. 외상성 교합력을 가했을때 3일군에서는 대조군에서와 같이 치근 표면에 변화가 나타 나지 않았으며, 7일군에서부터 백아질의 흡수가 일어나기 시작하였다. 2. 외상성 교합력을 가한 기간이 길수록 백아질 표면의 흡수 면적과 흡수 깊이가 증가 하였으며, 7일군과 15일군에서는 흡수가 백아질층에만 한정되어 있었으나, 30일군에서는 상아질층까지 흡수가 일어났다. 3. 7일군, 15일군, 30일군의 흡수부위는 주로 치근단 1/3부위에 위치하였다. 4. 치근첨단부 흡수는 30일군에서만 나타났다.
[영문] The purpose of this study was to observe the root surface changes following traumatic occlusion. Five adult dogs were used, and divided into one control group and four experimental groups. In experimental groups, high Sun Platinum casting metal crowns with 2.0mm thick were placed artificially onto the lower right third premolars to create the traumatic occlusion. After 3, 7, 15, 30 experimental days, the specimens were examined under scanning electron microscope. The results of this study were as follows: 1. In control and 3 day groups, no significant changes were seen on the root surface. The initial cementum resorption was observed in 7 day group. 2. The resorption area and depth were more remarkable as the trauma imposed upon continuously. In 7 day and 15 day groups, the resorptions were limited in the cementum, but the dentin resorption was occurred in 30 day group. 3. In 7, 15, 30 day groups, root resorption areas were mainly located in the apical third. 4. In 30 day group, the root apex resorption was noticeable.
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2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 2. Thesis
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