DOI: 10.12688/f1000research.189777.1 ISSN: 2046-1402

An in vitro study assessing and comparing the shear bond strength and adhesive remnant index of two fluoride-releasing bonding agents from the 4th and 5th generations

Akshita Pareek, Arun S Urala, Divya S, Kalayana C Pentapati, Vathsala Patil, Mithun Pai
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Objectives Bond strength is a crucial factor that influences the force applied and the duration of orthodontic therapy. Various adhesives are available, but selecting the most effective one is essential to minimize the chairside time while maintaining adequate bond strength. The aim of this study was to compare the Shear Bond Strength (SBS) and ARI (Adhesive Remnant Index) of two different 4 th generation – Group 1 (Waldent Orthobond) and 5 th generation - Group 2 (Koden EZ Bond system) fluoride-releasing bonding agents. Methods The study included 40 human maxillary first premolar teeth that met all the criteria. They were randomly allocated to two groups, with each group consisting of 20 teeth. A self-curing acrylic resin was used to mount each tooth. The acrylic blocks were colored to distinguish between the two experimental sets. Group 1 bonded with the Waldent Orthobond, while Group 2 bonded with the Koden EZ bond system. Stainless steel premolar brackets (Rockey Mountain Orthodontics, USA) were used. Following curing using light source (3 M ESPE Elipar™, Germany) the bonded samples were submerged in water for 24 h. Subsequently, the shear bond strengths of the specimens were determined using an Instron 3346 Universal Testing Machine. The bond strength was measured in megapascals (MPa). The ARI of each debonded specimen was determined using (Leica DME Binocular Compound Microscope, Leica Microsystems, Germany). The data were subsequently subjected to statistical analysis. Results Group 2 showed the significantly higher shear bond strength value of 7.8 MPa than Group 1 (5.31 MPa). No significant difference was found between the ARI of the two groups. Conclusion The study findings suggest that the Group 2 provides superior shear bond strength compared with the Group 1.

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