title: The effect of immediate versus delayed cementation on the retention of different types of fiber post in canals obturated using a eugenol sealer.
abstract: Post can be placed immediately after the completion of the endodontic procedure or at a later stage after setting of the sealer. In this in vitro study, post space preparation and post cementation were performed immediately (group 1), 24 h (group 2), and 7 days (group 3) after root filling. A control group with no root canal obturation was included (group 4). Each group was further divided into three subgroups, according to the post type and to the materials used for luting the post. A push-out test was performed to evaluate post-root canal dentin interfacial strength. Differences among experimental groups were analyzed with two-way ANOVA and the Tukey test. Significant differences (p < 0.05) in interfacial strengths were observed for the factors post cementation interval and post type. Clinicians should be careful in performing immediate cementation of fiber posts, as delayed cementation shows higher post-dentin interfacial strengths irrespective of the post type.
authors.affiliation: Department of Restorative Dentistry and Dental Materials, University of Siena, Siena, Italy.
authors.forename: Michele
authors.initials: M
authors.lastname: Vano
authors.forename: Alvaro H
authors.initials: AH
authors.lastname: Cury
authors.forename: Cecilia
authors.initials: C
authors.lastname: Goracci
authors.forename: Nicoletta
authors.initials: N
authors.lastname: Chieffi
authors.forename: Mario
authors.initials: M
authors.lastname: Gabriele
authors.forename: Franklin R
authors.initials: FR
authors.lastname: Tay
authors.forename: Marco
authors.initials: M
authors.lastname: Ferrari
mesh_terms: D000704:Analysis of Variance; D002484:Cementation / Q000379:methods*; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D011176:Post and Core Technique; D012044:Regression Analysis; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods; D018709:Statistics, Nonparametric; D013997:Time Factors; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement