Non resorbable membrane in GTR removed after:
a. 4-6 weeks ***
b. 8-12 weeks
c. 14-36 weeks
The initial membranes developed were nonresorbable (polytetrafluoroethylene [PTFE]) and, therefore, required a second, although frequently simple, procedure to remove it. This second procedure was done after the initial stages of healing, usually 3 to 6 weeks after the first intervention. The second procedure was a significant obstacle in the utilization of this GTR technique, and, therefore, resorbable membranes were developed.