title: Evaluation of the flexural strength of carbon fiber-, quartz fiber-, and glass fiber-based posts.
abstract: This study investigated the flexural strength of eight fiber posts (one carbon fiber, one carbon/quartz fiber, one opaque quartz fiber, two translucent quartz fiber, and three glass fiber posts). Eighty fiber posts were used and divided into eight groups (n = 10): G1: C-POST (Bisco); G2: AESTHETI-POST (Bisco); G3: AESTHETI-PLUS (Bisco); G4: LIGHT-POST (Bisco); G5: D.T. LIGHT-POST (Bisco); G6: PARAPOST WHITE (Coltene); G7: FIBERKOR (Pentron); G8: REFORPOST (Angelus). All of the samples were tested using the three-point bending test. The averages obtained were submitted to the ANOVA and to Tukey's test (p < 0.05). The mean values (MPa) of the groups AESTHETI-POST-carbon/quartz fiber post (Bisco) and AESTHETI-PLUS-quartz fiber post (Bisco) were statistically similar and higher than the mean values of the other groups. The mean values of the groups C-POST-carbon fiber post (Bisco), LIGHT-POST-translucent quartz fiber post (Bisco), D.T. LIGHT-POST-double tapered translucent quartz fiber post (Bisco), PARAPOST WHITE-glass fiber post (Coltene) and FIBREKOR--glass fiber post (Pentron) were similar and higher than the group REFORPOST-glass fiber post (Angelus).
authors.affiliation: Department of Dental Materials and Prosthodontics, São Paulo State University at São José dos Campos, Brazil. grazielagalhano@yahoo.com.br
authors.forename: Graziela Avila
authors.initials: GA
authors.lastname: Galhano
authors.forename: Luiz Felipe
authors.initials: LF
authors.lastname: Valandro
authors.forename: Renata Marques
authors.initials: RM
authors.lastname: de Melo
authors.forename: Roberto
authors.initials: R
authors.lastname: Scotti
authors.forename: Marco Antonio
authors.initials: MA
authors.lastname: Bottino
mesh_terms: D000704:Analysis of Variance; D002244:Carbon; D000077482:Carbon Fiber; D003188:Composite Resins; D003764:Dental Materials; D003799:Dental Stress Analysis; D004548:Elasticity; D005898:Glass; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D018583:Pliability; D011176:Post and Core Technique; D011791:Quartz; D018709:Statistics, Nonparametric
chemical_list: D000077482:Carbon Fiber; D003188:Composite Resins; D003764:Dental Materials; C113550:FiberKor, sculpture; C009753:fiberglass; D011791:Quartz; D002244:Carbon