Influence of Er,Cr:YSGG Laser Surface Treatments on Micro Push-Out Bond Strength of Fiber Posts to Composite Resin Core Materials

Mehrsima Ghavami-Lahiji, Stefano Benedicenti, Roghayeh Karimian, Sima Shahabi


Statement of problem: The bonding of fiber post to resin core or root dentin is challenged by limited penetration of resin material to the polymeric matrix of fiber posts.

Objectives: The purpose of this study was to investigate the effect of Er,Cr:YSGG on micro push-out bond strength of glass fiber posts to resin core material.

Materials and Methods: We used 2 commercially available fiber posts, Exacto (Angelus) and White Post DC (FGM), which had similar coronal diameters. Specimens of each fiber post (n=36) were randomly divided into three subgroups (n=12 posts per group) according to different surface treatment methods: control (no surface treatment), irradiation by 1W Er,Cr:YSGG, and irradiation by 1.5W Er,Cr:YSGG. A cylindrical plastic tube was placed around the post. Resin core material was filled into the tube and cured. Coronal portions of the posts were sectioned into 1-mm-thick slices. Then, the specimens were subjected to a thermocyling device for 3000 cycles. The micro push-out test was carried out using a Universal Testing Machine. Data were analyzed using one-way ANOVA followed by Tukey’s HSD post hoc test to investigate the effect of different surface treatments on each type of fiber post.

Results: The 1.5W Er,Cr:YSGG laser statistically reduced micro push-out bond strength values in the Exacto groups (P<0.05). However, there was no significant difference between the control and 1W Er,Cr:YSGG groups. We observed no significant difference among different surface treatment methods in the White post DC groups (P>0.05). Mode of failure analysis showed that mixed failure was the predominant failure type for all surface treatment groups.

Conclusions: The beneficial effect of Er,Cr:YSGG laser application could not be confirmed based on the results of this in vitro study. Er,Cr:YSGG laser could not significantly enhance the bond strength values. However, the 1.5W laser statistically decreased micro push-out bond strength in the Exacto fiber posts.

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Choi Y, Pae A, Park EJ, et al. The effect of surface treatment of fiber-reinforced posts on adhesion of a resin-based luting agent. J Prosthet Dent. 2010;103:362-8.

Soares CJ, Santana FR, Pereira JC, et al. 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.

Liu C, Liu H, Qian YT, et al. The influence of four dual-cure resin cements and surface treatment selection to bond strength of fiber post. Int J Oral Sci. 2014;6:56-60.

Schwartz RS, Robbins JW. Post placement and restoration of endodontically treated teeth: a literature review. J Endod. 2004;30:289-301.

Baba NZ, Golden G, Goodacre CJ. Nonmetallic prefabricated dowels: a review of compositions, properties, laboratory, and clinical test results. J Prosthodont. 2009;18:527-36.

Goracci C, Ferrari M. Current perspectives on post systems: a literature review. Aust Dent J. 2011;56:77-83.

Lassila LV, Tanner J, Le Bell AM, et al. Flexural properties of fiber reinforced root canal posts. Dent Mater. 2004;20:29-36.

Mazzitelli C, Ferrari M, Toledano M, et al. Surface roughness analysis of fiber post conditioning processes. J Dent Res. 2008;87:186-90.

Zicari F, De Munck J, Scotti R, et al. Factors affecting the cement–post interface. Dent Mater. 2012;28:287-97.

Güler AU, Kurt M, Duran I, et al. Effects of different acids and etching times on the bond strength of glass fiber-reinforced composite root canal posts to composite core material. Quintessence International. 2012;43:e1-8.

Schmage P, Cakir FY, Nergiz I, et al. Effect of surface conditioning on the retentive bond strengths of fiberreinforced composite posts. J Prosthet Dent. 2009;102:368-77.

Sipahi C, Piskin B, Akin GE, et al. Adhesion between glass fiber posts and resin cement: evaluation of bond strength after various pre-treatments. Acta Odontol Scand. 2014;72:509-15.

Monticelli F, Osorio R, Sadek FT, et al. Surface treatments for improving bond strength to prefabricated fiber posts: a literature review. Oper Dent. 2008;33:346-55.

Bitter K, Priehn K, Martus P, et al. In vitro evaluation of push-out bond strengths of various luting agents to tooth-colored posts. J Prosthet Dent. 2006;95:302-10.

Cekic-Nagas I, Sukuroglu E, Canay S. Does the surface treatment affect the bond strength of various fibre-post systems to resin-core materials? J Dent. 2011;39:171-9.

Goracci C, Tavares AU, Fabianelli A, et al. The adhesion between fiber posts and root canal walls: comparison between microtensile and push-out bond strength measurements. Eur J Oral Sci. 2004;112:353-61.

Kurtulmus-Yilmaz S, Cengiz E, Ozan O, et al. The effect of Er,Cr:YSGG laser application on the micropush-out bond strength of fiber posts to resin core material. Photomed Laser Surg. 2014;32:574-81.

Goracci C, Raffaelli O, Monticelli F, et al. The adhesion between prefabricated FRC posts and composite resin cores: microtensile bond strength with and without post-silanization. Dent Mater. 2005;21:437-44.

Albaladejo A, Osorio R, Papacchini F, et al. Post silanization improves bond strength of translucent posts to flowable composite resins. J Biomed Mater Res B Appl Biomater. 2007;82:320-4.

Salameh Z, Papacchini F, Ounsi HF, et al. Adhesion between prefabricated fiber-reinforced posts and different composite resin cores: a microtensile bond strength evaluation. J Adhes Dent. 2006;8:113-7.

Ounsi HF, Salameh Z, Carvalho CA, et al. Bond strength of composite core build-up materials to fiber-reinforced posts: a microtensile comparison between conventional and wet-ethanol bonding systems. J Adhes Dent. 2009;11:375-80.

Kriznar I, Jevnikar P, Fidler A. Effect of Er:YAG laser pretreatment on bond strength of a composite core build-up material to fiber posts. Lasers Med Sci. 2015;30:733-40.

Ulbrich NL, Franco APGdO, Zielak JC, et al. The stress evaluation of root posts using the finite element analysis. RSBO (Online). 2011;8:189-93.

Luiz BKM, Mattei FP, Francisco KRM, et al. Fracture resistance, two point bending strength and morphological characteristics of pulpless teeth restored with fiber-reinforced composite posts. RSBO (Online). 2012;9:272-9.

Seefeld F, Wenz HJ, Ludwig K, et al. Resistance to fracture and structural characteristics of different fiber reinforced post systems. Dent Mater. 2007;23:265-71.

Grandini S, Goracci C, Monticelli F, et al. Fatigue resistance and structural characteristics of fiber posts: three-point bending test and SEM evaluation. Dent Mater. 2005;21:75-82.

Shiu P, De Souza-Zaroni WC, Eduardo Cde P, et al. Effect of feldspathic ceramic surface treatments on bond strength to resin cement. Photomed Laser Surg. 2007;25:291-6.

Arslan H, Barutcigil C, Yilmaz CB, et al. Push-out bond strength between composite core buildup and fiber-reinforced posts after different surface treatments. Photomed Laser Surg. 2013;31:328-33.

Kurt M, Güler AU, Duran İ, et al. Effects of different surface treatments on the bond strength of glass fiber-reinforced composite root canal posts to composite core material. J Dent Sci. 2012;7(1):20-5.

Kirmali O, Kustarci A, Kapdan A, et al. Effects of dentin surface treatments including Er, Cr: YSGG laser irradiation with different intensities on the push-out bond strength of the glass fiber posts to root dentin. Acta Odontologica Scandinavica. 2015;73:380-6.

Mohammadi N, Savadi Oskoee S, Abed Kahnamoui M, et al. Effect of Er,Cr:YSGG pretreatment on bond strength of fiber posts to root canal dentin using a self-adhesive resin cement. Lasers Med Sci. 2013;28:65-9.

Nagase DY, de Freitas PM, Morimoto S, et al. Influence of laser irradiation on fiber post retention. Lasers Med Sci. 2011;26:377-80.

Barbosa Siqueira C, Spadini de Faria N, Raucci-Neto W, et al. Evaluation of Mechanical Properties of Glass Fiber Posts Subjected to Laser Surface Treatments. Photomed Laser Surg. 2016;34:460-6.

HashemiKamangar SS, Tabatabaii MH, Kalantari S, et al. Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er, Cr: YSGG Laser and Thermocycling. J Lasers Med Sci. 2017;9:36-42.

Mannocci F, Machmouridou E, Watson TF, et al. Microtensile bond strength of resin-post interfaces created with interpenetrating polymer network posts or cross-linked posts. Med Oral Patol Oral Cir Bucal. 2008;13:E745-52.


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