Effects of Ozone and Prophylactic Antimicrobial Applications on Shear Bond Strength of Orthodontic Brackets

Özet

Objective: The present study aimed to evaluate the effects of ozone and prophylactic antimicrobial applications on the shear bondstrengths and bond failure interfaces of orthodontic brackets.Methods: Sixty human canine teeth were randomly divided into three groups (n=20), receiving the following treatments: GroupI-pumice prophylaxis (Isler Dental, Ankara, Turkey)+37% orthophosphoric acid (Dentsply, Rio de Janeiro, Brazil)+Transbond XT primerand adhesive (3M Unitek, Monrovia, USA); Group II-prophylaxis paste (Topex, NJ, USA)+37% orthophosphoric acid (Dentsply, Riode Janeiro, Brazil)+ Transbond XT primer and adhesive paste (3M Unitek, Monrovia, USA); and Group III-ozone application (BiozonixGmbH, Munich, Germany)+37% orthophosphoric acid (Dentsply, Rio de Janeiro, Brazil)+Transbond XT primer and adhesive (3MUnitek, Monrovia, USA). All specimens were stored at 37°C water for 24 h. Shear bond strength was assessed using a universal testingdevice (Autograph AGS-X; Shimadzu, Japan). Adhesive remnant index (ARI) scores were obtained through examination of teeth understereomicroscope at 10× magnification after debonding.Results: Shear bond strengths of orthodontic brackets were 16.10, 18.01, and 19.23 MPa for Groups I, II, and III, respectively. Nostatistically significant difference in shear bond strength of orthodontic brackets was found among the groups (p=0.273), based onKruskal-Wallis analysis. Additionally, no significant difference was found in the ARI scores of each group using chi-square analysis(p=0.992).Conclusion: Shear bond strength of orthodontic brackets and ARI scores was not found to be negatively impacted by ozone application.