외상상 교합력이 성견 치주인대내의 혈관조직에 미치는 영향에 대한 전자현미경적 연구

Abstract

[한글]

저자는 5마리의 성견을 이용, 상악 우측 제 3소구치에 주조금관을 장착하여 외상성 교합력을 유발시킨 후 3일, 7일, 15일, 30일 후 치주 인대내의 혈관 조직의 변화를 전자 현미경을 이용하여 관찰한 결과 다음과 같은 결론을 얻었다.

1. 외상성 교합력을 가한 3일군에서 혈관 내피세포와 섬유아세포의 사립체가 파괴되었다.

2. 외상성 교합력을 가한 7일군에서는 섬유아세포내의 조면 형질내세망의 확대된 양상을 볼 수 있었으며 혈관 주위의 기저판의 연속성 소실을 관찰할 수 있었다.

3. 15일군에서는 혈관이 팽창된 양상을 보이고 적혈구 세포의 파괴와 내피세포의 편평해진 소견을 보이며 기저판이 부분적으로 파괴되어 있고 혈관강 밖에서도 적혈구가 관찰되었다.

4. 30일군에서 아직 혈관의 팽창이 완전히 회복되지는 않았으나 교원섬유와 섬유아세포는 대조군과 거의 비슷한 소견을 보인다.

[영문]

The purpose of this study was to investigate the electron microscopic vascular changes of dog molar periodontium incident to trauma from occlusion.

The experiments were performed in five dogs. One dog was used as control and the other four dogs were used as experimental groups.

In experimental groups, high Sun Platinum casting metal crowns with 2.Omm thickness were set artificially onto the upper right third premolars to create the traumatic occlusion.

After 3, 7, 15, 30 experimental days, the specimens were stained with Hematoxylin Eosin and Trichrome, examined under light microscope. Also all specimens were observed under electron microscope.

The results of this study were as followes;

1. In 3 day group, mitochondria of endothelial cell and fibroblast were broken.

2. In 7 day group, dilatation of rough endoplasmic reticulum in fibroblast and looseness of basal lamina surrounding capillary were observed.

3. In 15 day group, dilatation of blood vessel, severe destruction of RBC, flatening of endothelial cell were observed. In outside of lumen, RBC was also observed.

4. In 30 day group, dilatation of blood vessel was remaining. But collagen fibers and fibroblasts were observed nearly similar to control group. Remnants of broken RBC were observed.

5. In all experimental groups, the band of collagen fiber was remaining and changes of collagen fibers was not observed.