title: Sealing ability of super EBA and Dyract as root-end fillings: a study in vitro.
abstract: The purpose of this study was to compare, in vitro, the sealing ability of Super EBA and a compomer, Dyract, as root-end filling materials. Forty-eight single-rooted human teeth were cleaned, shaped and obturated with gutta-percha. The root apices were resected and root-end cavities were prepared. Twenty teeth were retrofilled with Super EBA and Dyract; eight teeth served as positive and negative controls. Half of the teeth in each group were immersed in basic fuschin for 4 weeks, the other half for 12 weeks. The teeth were then embedded in resin, sectioned, and the maximum extent of dye penetration measured. Statistical analysis (ANOVA) did not reveal a significant difference between the two materials at 4 weeks. At 12 weeks, the extent of dye penetration was statistically significant with Super EBA leaking more than Dyract (P = 0.002). Moreover, the extent of the dye penetration was statistically significantly different for Super EBA between the 4- and 12-week groups (P = 0), whereas no such difference was found for Dyract. Thus, the sealing ability of Dyract was found to be better than Super EBA at 12 weeks.
authors.affiliation: Center for Prosthodontics and Implant Dentistry, Loma Linda University, USA.
authors.forename: K
authors.initials: K
authors.lastname: Bohsali
authors.forename: W J
authors.initials: WJ
authors.lastname: Pertot
authors.forename: B
authors.initials: B
authors.lastname: Hosseini
authors.forename: J
authors.initials: J
authors.lastname: Camps
mesh_terms: D020770:Compomers; D003763:Dental Leakage; D017220:Dentin-Bonding Agents; D005069:Evaluation Studies as Topic; D006801:Humans; D008689:Methacrylates; D012184:Retrograde Obturation; D012387:Root Canal Filling Materials; D017640:Silicates
chemical_list: D020770:Compomers; D017220:Dentin-Bonding Agents; C088486:Dyract; D008689:Methacrylates; D012387:Root Canal Filling Materials; D017640:Silicates; C084074:Super EBA