Ultrastructural changes of the junctional epithlium after dental preparation
- VernacularTitle:牙体预备对牙龈结合上皮损伤后的超微结构观察
- Author:
Weiping HU
;
Baohui GUO
;
Haitao SUN
- Publication Type:Journal Article
- Keywords:
Junctional epithelium;
Dental prosthesis;
Ultrastructure
- From:
Journal of Practical Stomatology
2000;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the ultrastructural changes of the junctional epithelial after dental preparation. Methods: Junctional epithelium (JE) of left premaxillary teeth was detached by diamond bur in 8 rabbits (group 1) and by surgical knife in another 8 rabbits (group 2). JE of the right teeth without treatment was used as the controls. 4 animals in each group were sacrificed 1 and 2 weeks after operation respectively.Samples were prepared for transmission electron microscope observation.Results: In the two tested groups reattachment was observed 2 weeks after operation,degeneration of mitochondria in JE cells and destruction of basement membrane were observed. No significant difference was observed between group 1 and group 2.Conclusion: Dental preparation may result in ultrastructural changes of JE cells.
