Tensile strength of glass fiber posts submitted to different surface treatments.
The aim of this in vitro study was to evaluate the tensile strength of glass fiber posts submitted to different surface treatments. Forty-eight maxillary canines had their crowns sectioned and root canals endodontically treated. The roots were embedded in acrylic resin and distributed into 3 groups according to the surface treatment: Group I: the posts were treated with silane agent for 30 s and adhesive; Group II: the posts were cleaned with alcohol before treatment with silane agent and adhesive; Group III: the posts were submitted to conditioning with 37% phosphoric acid for 30 s before treatment with silane agent and adhesive. Each group was divided into 2 subgroups for adhesive polymerization or not before insertion into the canal: A - adhesive was not light cured and B - adhesive was light cured. All posts were cemented with Panavia F and the samples were subjected to tensile strength test in a universal testing machine at crosshead speed of 1 mm/min. Data were submitted to one-way ANOVA and Tukey's test at 5% significance level. There was statistically significant difference (p<0.01) only between group GIII-B and groups GI-A and GI-B. No significant difference was found among the other groups (p>0.05). It was concluded that the products used for cleaning the posts influenced the retention regardless of adhesive light curing.
Maria Isabel A
MI
Faria
Érica  Alves
É
Gomes
Danielle Cristine
DC
Messias
João Manoel
JM
Silva Filho
Celso Bernardo
CB
Souza Filho
Silvana Maria
SM
Paulino
D001641:Bicuspid; D003188:Composite Resins / Q000737:chemistry; D003738:Dental Cements / Q000737:chemistry; D003799:Dental Stress Analysis / Q000379:methods*; D005898:Glass; D006801:Humans; D066298:In Vitro Techniques; D058105:Polymerization; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D012387:Root Canal Filling Materials / Q000737:chemistry; D012390:Root Canal Therapy; D012821:Silanes / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength
D003188:Composite Resins; D003738:Dental Cements; C438843:Panavia-Fluoro; D019279:Resin Cements; D012387:Root Canal Filling Materials; D012821:Silanes; C009753:fiberglass