Abstract
The present investigation was to examine the effect of root surface roughness on periodontal reattachment after flap operation.
Four adult monkeys (Macaca Irus) with normal dentition were employed and their 88 buccal root surfaces of posterior teeth were used, and they were divided into Smooth and Rough group for flap operation.
1, 2, 4, 8 weeks after surgery, the monkeys were sacrificed and examined histometrically.
The results were as follows,
1. A greater tendency in the apical migration of epithelium was observed in smooth group comparison to rough group. Especially in samples 2 weeks after surgery showed significant difference.
2. New cementum formation was greater in rough group, in 2, 4, 8 weeks after surgery.
3. Functionally oriented fibrous attachment and bone regeneration were significantly greater in Rough group 4 weeks after surgery. But there was no significant difference between two groups, 8 weeks after surgery.
From the above findings, it may be suggested that during flap operation it is more advantageous to make root surface rough instead of smooth, to obtain a more coronal connective tissue attachment.
