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. 2022 Feb 6:19:8.
doi: 10.18502/fid.v19i8.8725. eCollection 2022.

Comparative Evaluation of Microtensile Bond Strength of Three Adhesive Systems

Shiva Jafarnia  1 , Javad Zeinaddini Meymand  2 , Fateme Zandkarimi  3 , Sogol Saberi  4 , Sima Shahabi  5 , Alireza Valanezhad  1 , Sirus Safaee  1 , Mahdis Nesabi  1 , Ikuya Watanabe  1
Affiliations

Comparative Evaluation of Microtensile Bond Strength of Three Adhesive Systems

Shiva Jafarnia et al. Front Dent. .

Abstract

Objectives: The aim of this study was to assess the microtensile bond strength of three universal adhesives to dentin and enamel. Materials and Methods: Sixty extracted human third molar teeth were chosen and divided into six groups regarding the adhesive (G-Premio Bond, Clearfil S3 Bond or Single Bond) and tooth surface. All the applied bonding agents were universal adhesives. The teeth were polished and the adhesives were applied; then the teeth were restored with composite resin. The samples were mounted in acrylic resin and sectioned. The specimens were subjected to a universal testing machine and the microtensile bond strength was measured. The failure mode of each specimen was determined under a stereomicroscope. Data were analyzed using two-way ANOVA (α=0.05). Results: The microtensile bond strength of G-Premio Bond to enamel and dentin was 11.79±8.27 and 17.55±9.47 MPa, respectively which was not significantly different from the values in Single Bond group (15.59±10.66 and 17.19±10.09 MPa to enamel and dentin, respectively; P>0.05). However, the values for Clearfil S3 Bond were 7.11±4.23 and 7.88±8.83 MPa to enamel and dentin, respectively, which were significantly lower than the values for G-Premio Bond (P<0.05). Scanning electron microscopic (SEM) images showed that the adhesive failure was dominant in both enamel and dentin groups and in all adhesive systems. Conclusion: G-Premio Bond and Single Bond provided higher microtensile bond strength compared with Clearfil S3 Bond. Universal adhesives with their acceptable performance can be applied in self-etch mode on both enamel and dentin.

Keywords: Composite Resins; Dental Bonding; Dental Cements; Dental Enamel; Dentin.

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Figures

Fig. 1
Fig. 1
Schematic view of the experimental design
Fig. 2
Fig. 2
Microtensile bond strength after using each adhesive on the enamel and dentin substrates
Fig. 3
Fig. 3
Representative SEM images of adhesive and mixed fractures, left column: adhesive fracture, middle column: mixed fracture in dentin, right column: mixed fracture in enamel (A, B, C): G-Premio Bond, (D, E, F): Clearfil S3 Bond, (G, H, I): Single Bond
See this image and copyright information in PMC

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