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A scanning electron microscopical study of initial changes in human premolars teeth after orthodontic tooth movement | ||
| MUSTANSIRIA DENTAL JOURNAL | ||
| Article 1, Volume 2, Issue 2, 2005, Pages 230-234 | ||
| Authors | ||
| ; Dalia Kubad Taher; | ||
| Abstract | ||
| scanning electron microscope was used to study the effect of orthodontic tooth movement by using a force of 50 grams on the pressure side of 2l upper left premolar mt for 5- 75 days while the contralaterl side 14 teeth were used as a control. In order to ruiy the morphology and occurrence of root resorptions, the organic tissue was removed rsigg sodium hypochlorite and the denuded root surface were re—examined in the scanning electron microscope. Initially, tissue affected by pressure was mainly located in he marginal region and subsequently the mid- portion of the roots became generally uri genced. The resorption process of cementum begins after 5 days as around cavities measuring about 4u. Further resorption in cementum was characterized by measuring small, thin—walled round lacunae which confluence into extensive, shallow resorptions after 25 days and more | ||
| Keywords | ||
| Scanning electron microscope; orthodontic tooth movement; premolar teeth | ||
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