Effect of adhesive resin cements and post surface silanization on the bond strengths of adhesively inserted fiber posts.
This study evaluated the tensile bond strengths and the effect of silanization of fiber posts inserted with different adhesive systems. Sixty DT Light Posts (size 1) were used. Thirty posts were pretreated with silane. The posts were cemented into form-congruent artificial root canals (12 mm) of bovine dentine. Six groups were formed: G1, Prime&Bond NT/Calibra; G2, Monobond-S+Prime&Bond NT/Calibra; G3, ED Primer/Panavia 21ex; G4, Monobond-S+ED Primer/Panavia 21ex; G5, RelyX Unicem; and G6, Monobond-S+RelyX Unicem. The mean (standard deviation) tensile bond strengths (megapascals) were 7.69 (0.85) for G1, 7.15 (1.01) for G2, 6.73 (0.85) for G3, 6.78 (0.97) for G4, 4.79 (0.58) for G5, and 4.74 (0.88) for G6. G1 achieved significantly higher bond strengths than G3 and G5; G3 had significantly higher values than G5 (P < .05; Scheffé procedure). Silanization had no significant effect (P > .05, one-way analysis of variance). Tensile bond strengths were significantly influenced by the type of resin cement. Silanization of fiber post surfaces seems to have no clinical relevance.
Wrbas
Karl-Thomas
KT
Department of Operative Dentistry and Periodontology, University School and Dental Hospital, Albert-Ludwigs-University Freiburg, Freiburg i. Br., Germany. thomas.wrbas@uniklinik-freiburg.de
Altenburger
Markus Jörg
MJ
Schirrmeister
Jörg Fabian
JF
Bitter
Kerstin
K
Kielbassa
Andrej Michael
AM
D000818:Animals; D002417:Cattle; D003764:Dental Materials / Q000737:chemistry*; D011176:Post and Core Technique; D019279:Resin Cements / Q000737:chemistry*; D012821:Silanes / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength