A Comparative Evaluation of Effect of Different Chemical Solvents on the Shear Bond Strength of Glass Fiber reinforced Post to Core Material

Abstract

ABSTRACT%Aim: To compare the effect of different chemical solvents on glass fiber reinforced posts and to study the effect of these solvents on the shear bond strength of glass fiber reinforced post to core material.Materials and methods: This study was conducted to evaluate the effect of three chemical solvents, i.e. silane coupling agent, 6% H2O2 and 37% phosphoric acid on the shear bond strength of glass fiber post to a composite resin restorative material. The changes in post surface characteristics after different treatments were also observed, using scanning electron microscopy (SEM) and shear bond strength was analyzed using universal testing machine (UTM).Results: Surface treatment with hydrogen peroxide had greatest impact on the post surface followed by 37% phosphoric acid and silane. On evaluation of the shear bond strength, 6% H2O2 exhibited the maximum shear bond strength followed in descending order by 37% phosphoric acid and silane respectively.Conclusion: The surface treatment of glass fiber post enhances the adhesion between the post and composite resin which is used as core material. Failure of a fiber post and composite resin core often occurs at the junction between the two materials. This failure process requires better characterization.How to cite this article: Sharma A, Samadi F, Jaiswal JN, Saha S. A Comparative Evaluation of Effect of Different Chemical Solvents on the Shear Bond Strength of Glass Fiber Reinforced Post to Core Material. Int J Clin Pediatr Dent 2014;7(3):192-196.

Fiber-Reinforced Composites for Dental Applications

“…FRCs have been intensively investigated with a particular emphasis on mechanical properties such as fracture toughness, compressive strength, load-bearing capacity [ 4 ], flexural strength [ 5 ], fatigue resistance [ 6 ], fracture strength [ 7 ] or on the effect of layer thickness [ 8 ], bacterial adhesion [ 9 ], adhesion of fibers for various dental applications, such as long fibers [ 10 ], nets [ 11 ], and posts [ 12 ]. From clinical perspective, FRCs have been investigated for different clinical applications in prosthodontics, such as replacement of missing teeth by resin-bonded adhesive fixed dental prostheses of various kinds [ 13 ], reinforcement elements of dentures or pontics [ 14 ], and direct construction of posts and cores [ 15 ].…”

Evaluation of Push-Out Bond Strength Between Different Surface Treated Glass Fiber Posts and Composite

“…It forms a chemical bridge with hydroxyl covered substrates, such as glass. [28,39,30] Studies have reported phosphoric acid [11,[18][19][20][21]. has the ability to remove epoxy layer with intact glass fibers.…”

Immediate and long-term microshear bond strength of resin-based cements to core build-up materials

“…Adhesive cementation of ceramic crowns increases the fracture resistance of the core-crown complex ( 20 ) and directly correlates with long-term clinical success. Previous studies have evaluated the adhesive relationship between post and luting agent ( 9 , 18 ), post and core material ( 21 ), luting agent and enamel/dentin ( 12 ), tooth and core materials ( 22 ), and crown and core materials ( 23 ). However, there is a lack of investigations about the bonding relationship between cement and the material used to perform the core build-up restorations.…”