Comparative evaluation of the effect of surface treatment of fiber-reinforced posts and prefabricated metal posts on adhesion of a resin-based luting cement: An in vitro study

Abstract

Background: The purpose of this study was to evaluate the effect of surface treatment of fiber-reinforce post and metal post of adhesion of a resin luting cement. Materials and Methods: Sixty methyl methacrylate specimens were fabricated with a customized metal rod. The samples were segregated into six groups (F1, F2, F3, M1, M2, and M3) of 10 specimens ( n = 10) each. The first three groups (F1, F2, and F3) were for fiber posts and (M1, M2, and M3) were for metal posts. The postspace preparation was done with dedicated drills supplied by the postmanufacturers to a length of 14 mm. F1 and M1 were the control groups. The posts in F2 and M2 groups were treated with airborne-particle abrasion with 70 μm Al 2 O 3 particles for 5 s at a constant distance of 20 mm, cleaned with alcohol and cemented in the postspace. The posts in the F3 and M3 groups were treated with airborne-particle abrasion followed by primer application. After cementing the posts into the postspace, the acrylic blocks were sectioned with a motor-driven jigsaw to obtain four specimens each of 3-mm thickness. These sections were then subjected to push-out tests on a universal testing machine. Results: There was a statistically significant increase in the bond strength of both fiber and metal posts to resin cement after airborne-particle abrasion with Al 2 O 3 particles and airborne abrasion followed by primer application. Conclusion: There is an increase in the bond strength of the resin cement with the prefabricated posts after the various surface treatments.

Retenção intracanalar na reconstrução coronária de dentes tratados endodonticamente – uma revisão narrativa

“…Fraturas radiculares são comumente reportadas devido à diferença de propriedades (Baba et al, 2009;Cheung, 2005;Maroli et al, 2017;Ree & Schwartz, 2010;Trushkowsky, 2011). Para além disso, o tratamento de superfície apresenta limitações quanto a topografia de superfície e aumento da rugosidade para a rentenção mecânica do cimento resinoso (Ree & Schwartz, 2010;Ruttonji et al, 2019;Carlos José Soares et al, 2012;Trushkowsky, 2011).…”

Bond strength and failure mode of glass fiber posts with different surface treatments prior to silanization: An in vitro comparative study

“…Treatments for glass fiber posts can be divided into three categories: first, treatments with sandblasting and etching with hydrogen peroxide, phosphoric acid, or hydrofluoric acid that result in surface irregularities and exposure of glass fiber[ 13 14 ]; second, treatments with chemical bonding between the cementing material and the glass fiber post (coating and priming solutions)[ 15 16 ]; and third, the combination of micromechanical and chemical components using the two methods mentioned above. [ 15 17 , 18 ]…”

“…The application of hydrogen peroxide and phosphoric acid to the glass fiber post is effective, since both dissolve the epoxy resin and expose fibers, leaving an optimal surface for silanization. [ 14 15 , 18 ] Majeti et al concluded that the surface treatment of post with 37% phosphoric acid for 15 seconds generates greater bond strength, significantly improving the post bonding to the root dentin. [ 2 ] Mosharraf et al concluded that hydrogen peroxide with silane for 60 seconds generates higher bond strength, especially in the cervical region, and the lowest values were reported in the untreated group and the apical region.…”