Effect of silica coating on flexural strength of fiber posts.
OBJECTIVE
Fiber-reinforced composite (FRC) posts can be air-abraded to obtain good attachment to the resin cement. This study tested the effect of silica coating on the flexural strength of carbon, opaque, and translucent quartz FRC posts.


METHODS
Six experimental groups of FRC posts (n=10 per group) were tested, either as received from the manufacturer or after chairside silica coating (30-microm CoJet-Sand).


RESULTS
There was no significant difference in the flexural strength of nonconditioned (504 to 525 MPa) and silica-coated (514 to 565 MPa) specimens (P > .05) (analysis of variance). The type of post did have a significant effect on flexural strength (P < .05).


CONCLUSIONS
Chairside silica coating did not affect the flexural strength of both carbon and quartz FRC posts.
Department of Restorative Dentistry, Federal University of Santa Maria, Brazil and São Jose dos Campos Dental School, São Paulo State University (UNESP), São José dos Campos, Brazil.
Luiz Felipe
LF
Valandro
Mutlu
M
Ozcan
Renata Marquez
RM
de Melo
Graziela Avila Prado
GA
Galhano
Paolo
P
Baldissara
Roberto
R
Scotti
Marco Antonio
MA
Bottino
D020906:Air Abrasion, Dental; D002244:Carbon / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D004853:Epoxy Resins / Q000737:chemistry; D006801:Humans; D008855:Microscopy, Electron, Scanning; D018583:Pliability; D011176:Post and Core Technique / Q000295:instrumentation*; D011791:Quartz / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties
D020099:Coated Materials, Biocompatible; D003764:Dental Materials; D004853:Epoxy Resins; D011791:Quartz; D002244:Carbon; D012822:Silicon Dioxide