Fernanda Weingartner Machado1, Mayara Bossardi2, Tatiana dos Santos Ramos2, Lisia Lorea Valente1, Eliseu Aldrighi Münchow3, Evandro Piva4. 1. Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil. 2. Control and Developmental Center of Biomaterials (CDC-Bio), Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil. 3. Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil. Electronic address: eliseumunchow@gmail.com. 4. Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil; Control and Developmental Center of Biomaterials (CDC-Bio), Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil.
Abstract
INTRODUCTION: In this study, the effect of different post surface treatments on the retention of glass fiber-reinforced post to root dentin was evaluated. The hypotheses tested were (1) post silanization would not improve its retention and (2) the application of silane plus resin adhesive on the post would enhance its retention. METHODS: After root canal preparation, 4 different protocols (n = 5) of post surface treatment were evaluated, combined with or without silane (Silane coupling agent) and adhesive (Scotchbond Multipurpose): silane + adhesive (S/A), only silane, only adhesive, or no treatment (control). RelyX ARC was used for post cementation. Next, specimens were subjected to push-out bond strength testing, and data were analyzed by two-way analysis of variance and Tukey test (P < .05). RESULTS: S/A showed higher bond strength than other protocols in the middle and coronal root regions (P < .001). Only silane did not enhance post retention compared with control (P > .05). The root dentin region influenced bond strength results only in the S/A group. CONCLUSIONS: Whereas silanization as the only post surface treatment did not improve retention, the combination of silane plus resin adhesive enhanced post retention to dentin in the middle and coronal root regions.
INTRODUCTION: In this study, the effect of different post surface treatments on the retention of glass fiber-reinforced post to root dentin was evaluated. The hypotheses tested were (1) post silanization would not improve its retention and (2) the application of silane plus resin adhesive on the post would enhance its retention. METHODS: After root canal preparation, 4 different protocols (n = 5) of post surface treatment were evaluated, combined with or without silane (Silane coupling agent) and adhesive (Scotchbond Multipurpose): silane + adhesive (S/A), only silane, only adhesive, or no treatment (control). RelyX ARC was used for post cementation. Next, specimens were subjected to push-out bond strength testing, and data were analyzed by two-way analysis of variance and Tukey test (P < .05). RESULTS: S/A showed higher bond strength than other protocols in the middle and coronal root regions (P < .001). Only silane did not enhance post retention compared with control (P > .05). The root dentin region influenced bond strength results only in the S/A group. CONCLUSIONS: Whereas silanization as the only post surface treatment did not improve retention, the combination of silane plus resin adhesive enhanced post retention to dentin in the middle and coronal root regions.
Authors: Júlio C M Souza; Valter Fernandes; Ana Correia; Paulo Miller; Oscar Carvalho; Filipe Silva; Mutlu Özcan; Bruno Henriques Journal: Clin Oral Investig Date: 2021-10-28 Impact factor: 3.573
Authors: Heloísa A B Guimarães; Paula C Cardoso; Rafael A Decurcio; Lúcio J E Monteiro; Letícia N de Almeida; Wellington F Martins; Ana Paula R Magalhães Journal: Int J Biomater Date: 2018-12-31