A Multicenter Randomized Double-blind Controlled Clinical Trial of Fiber Post Cementation Strategies

OBJECTIVES: The aim of this prospective randomized multicenter clinical trial was to evaluate the survival rate of glass fiber-reinforced posts cemented with self-adhesive or regular resin cements. METHODS: The sample was comprised of 152 teeth randomized within two centers and in accordance with the adhesive strategies for RelyX U100/U200 (3M ESPE) or Single Bond and RelyX ARC (3M ESPE). The cementation procedures were standardized and performed by previously trained operators. The primary outcome evaluated was post debonding. A trained evaluator, one for each center, assessed all subjects at intervals of 12 months for up to 6 years. Statistical analysis was performed using the Kaplan-Meier method. RESULTS: There was no statistically significant difference in survival rates between the two strategies assessed ( p=0.991), with a 92.7% survival rate for the self-adhesive cement and 93.8% for the regular cement. CONCLUSION: Both the self-adhesive and the regular resin cements are good alternatives for glass fiber post cementation.