Open AccessComparative Evaluation of Microtensile Bond Strength of Three Adhesive Systems
Author(s) -
Shiva Jafarnia,
Javad Zeinaddini Meymand,
Fateme Zandkarimi,
Sogol Saberi,
Sima Shahabi,
Alireza Valanezhad,
Sirus Safaee,
Mahdis Nesabi,
Ikuya Watanabe
Publication year - 2022
Publication title -
frontiers in dentistry
Language(s) - English
Resource type - Journals
ISSN - 2676-296X
DOI - 10.18502/fid.v19i8.8725
Subject(s) - bond strength , dentin , adhesive , enamel paint , materials science , single bond , composite material , molar , universal testing machine , composite number , ultimate tensile strength , stereo microscope , dentistry , chemistry , group (periodic table) , medicine , organic chemistry , layer (electronics)
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.