Histometric analysis of alveolar bone regeneration with expanded polytetrafluoroethylene (e-PTFE) and latex membranes|
Molina, Gustavo Otoboni; de Oliveira, Marcelo Tomás; Buss, Leonardo; Peruchi, João Davi Faraco; Pereira, Jefferson Ricardo & Ghizoni, Janaina Salomon
Aim: To investigate the amount of connective tissue migrated into the extraction socket using EPTFE
and latex membranes.
Methods: Seventeen rats were selected and randomly divided
into 3 groups: e-PTFE membrane (n = 6), Latex membrane (n = 6) and Control (no membrane,
n=5). After extraction of the maxillary right incisor, the animals of the test groups were subjected to
alveolar guided bone regeneration (GBR) surgery and received an expanded
polytetrafluoroethylene (e-PTFE) and a latex membrane, respectively. Thirty days after surgery,
the animals were killed and histometric analysis was done to evaluate the migration of connective
tissue. Data were analyzed statistically by one-way ANOVA and multiple-comparison Tukey’s test
at 5% significance level.
Results: There was statistically significant difference between groups e-
PTFE and Latex (p=0.001), and between groups e-PTFE and Control (p=0.012), but no significant
difference was found between groups Latex and Control (p=0.416).
Conclusions: The e-
PTFE membrane showed better results and appeared more adequate for GBR therapy, forming
a barrier to prevent the migration of connective tissue into the extraction socket. The latex
membrane, on the other hand, did not show benefits over the control group.
bone regeneration; membranes; oral surgery; tooth extraction