Jc. Douthitt et al., Histologic assessment of healing after the use of a bioresorbable membranein the management of buccal bone boss concomitant with periradicular surgery, J ENDODONT, 27(6), 2001, pp. 404-410
Histological and morphometric assessment of periradicular wound healing was
made after the use of a bioresorbable membrane over a buccal dehiscence, T
he third and fourth premolar teeth of nine dogs were resected and buccal de
fects created. Teeth were assigned randomly to the membrane or control grou
p. One tooth in each quadrant received a membrane, covering both roots. The
other tooth received no further treatment and served as a control, The ani
mals were killed and specimens were assessed at two time periods: 9 wk and
27 wk, The 27-wk membrane group exhibited significantly more (p = 0.004) co
nnective tissue height than the control group or either of the 9-wk groups.
The amount of regenerated alveolar bone was significantly greater for the
27-wk membrane group than for the control (p = 0.001) and 9-wk groups, Mean
junctional epithelium measurements were significantly greater (p = 0.012)
for the control. The use of a bioresorbable membrane enhances bone regenera
tion when a buccal defect exists at the time of periradicular surgery.