Comparative study of the different surface conditions on the bending properties and topographic analysis of the fiberglass posts
DOI:
https://doi.org/10.20453/reh.v32i4.4378Keywords:
Post and core technique, hydrofluoric acid, hydrogen peroxide, aluminun oxideAbstract
Objectives: To evaluate the bending and topography properties of surface treated fiber posts. Material and Methods: Experimental, In vitro. The samples were divided into two groups, the flexibility of 40 fiberglass posts from 2 commercial houses was evaluated for each conditioning procedure P1: FGM White Post DC; P2: MAQUIRA Fiber Post. The conditioning techniques were: T1: control T2: Hydrofluoric Acid 10% 15 seconds T3: Hydrogen Peroxide 24% 60 seconds T4: aluminum oxide 50 µm and were subjected to the universal testing machine, for the bending test of 3 points. The topographic surface of the fiberglass posts was observed using a scanning electron microscope. Results: The deflection (mm) showed a significant difference comparing the control groups and the conditioned groups with an average maximum value of 0.59mm ±0.04 and a minimum value of 0.51mm ±0.06. In the maximum force (N), a significant difference was observed when comparing the control groups and the conditioned groups, with a maximum value of 133.68 ±11.42 N and a minimum value of 103.48 ±17.79 N. Conclusions: No adverse effects on bending properties were found for both groups of fiberglass posts after surface conditioning with the different protocols.
References
Goracci C, Ferrari M. Current perspectives on post systems: a literature review. Aust Dent J. 2011; 56:77–83.
Zicari F, De Munck J, Scotti R, Naert I, Van Meerbeek B. Factors affecting the cement-post interface. Dent Mater J. 2012; 28: 287-297.
Aksornmuang J, Chuenarrom C, Chittithaworn N. Effects of various etching protocols on the flexural properties and surface topography of fiber reinforced composite dental posts. Dent Mater J. 2017;36(5):614-621. doi: 10.4012/dmj.2016-290
Murillo de Sousa M, Cavalcanto E, Vinicius P, Faria e Silva A, Soares C, Marcondes L. Fiber post etching with hydrogen peroxide effect of concentration and application time. J Endod. 2011; 37:398–402
Mazzitelli C, Ferrari M, Toledano M, et al. Surface roughness analysis of fiber post conditioning processes. J Dent Res. 2008;87:186–90
Archana C, Raju S, Yadhav S, et al. Effect of Surface pretreatment and thermal activation of silane coupling agent bond strength of fiber posts to resin cement. J Contemp Dent Pract. 2019;20(11):1293-1296
Schmage P, Pinto E, Platzer U, Nergiz I. Influence of oversized dowel space preparation on the bond strengths of FRC posts. Oper Dent 2009; 34:93-101.
Braga NM, Souza-Gabriel AE, Messias DC, Rached-Junior FJ, Oliveira CF, Silva RG, et al. Flexural properties, morphology and bond strength of fiber- reinforced posts: influence of post pretreatment. Braz Dent J. 2012; 23:679-85.
Maroulakos G, Wanserski MW, Wanserski MM, et al. Effect of airborne-particle abrasion on 3-dimensional Surface roughness and characteristic failure load of fiber reinforced posts. J Prosthet Dent. 2019;121(3):461-469. doi: 10.1016/j.prosdent.2018.07.007
Soares CJ, Santana FR, Pereira JC, Araujo TS, Menezes MS. Influence of airborne-particle abrasion on mechanical properties and bond strength of carbon/epoxy and glass/bis-GMA-fiber-reinforced resin posts. J Prosthet Dent. 2008; 99:444–54
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