[The peculiarity of the regeneration of the gingival mucosa after the operation of the tooth extraction].
The indices of the mitotic activity, the quantity of the double-nucleated cells and the dying nucleus coefficient in the basal and spinous layers of the rat multilayer flat epithelium after the extraction a tooth were studied. The experiments were carried out on 45 nonlinear white mature rats - males. After peeling the gingiva around the dental neck we extract three basal teeth. In the epithelial regenerates we counted amount of the mitotic figures (prophase, metaphase, anaphase, telophase) in the basal and spinous cells, double-nucleated cells in the spinous layer and the number of the dying nucleus (picnosis, karyolisis) among 5 000 cells. It was established that the tissue defect was filled up owing to the intensification of the mitotic activity in the germinative layer, namely, dew new cells generation. In spite of the rise the quantity of dying nucleus, the number of the dividing cells exceeds the number of the dying owns, what provides the reparation of the multilayer flat gingival epithelium in the region of the wound.
Galogre
A G
AG
Gorgoshidze
G G
GG
Dgebuadze
M A
MA
Mosidze
T G
TG
D000818:Animals; D005881:Gingiva / Q000166:cytology*; D008297:Male; D009092:Mucous Membrane / Q000166:cytology; D051381:Rats; D012038:Regeneration / Q000276:immunology*; D013997:Time Factors; D014081:Tooth Extraction