The effect of SensiKIN mouthwash on shear bond strength of orthodontic brackets on enamel surface: An in vitro study.

Background: Mouthwashes are used to control and decrease problems such as the accumulation of microorganisms and plaque in patients undergoing orthodontic treatment. Since the success of fixed orthodontic treatment depends on the bond strength of brackets to the enamel, the present study investigated the possible effects of the SensiKIN mouthwash on the shear bond strength of orthodontic brackets on the enamel surface.

Methods: The present case-control study was carried out on 40 extracted sound human premolar teeth (20 in the mouthwash group and 20 in the control group). All the tooth samples were immersed in 0.1% thymol solution for seven days, followed by storage in distilled water at 4ºC for<3 months. In the mouthwash group, the SensiKIN mouthwash was applied to the teeth twice every day for one minute each time for one month. The teeth in both groups were retrieved from the storage solutions for orthodontic procedures. Finally, a universal testing machine was used to determine the shear bond strength of orthodontic brackets to the enamel surface. The data were analyzed using SPSS 26.

Results: The results showed no significant difference in the mean shear bond strengths of orthodontic brackets between the SensiKIN mouthwash group (117.8, 36-387 N, around 11.7 Mpa) and the control group (121.6, 40.3-473.3 N, around 12.1 MPa) (P=0.914).

Conclusion: Since the SensiKIN mouthwash did not decrease the shear bond strength of orthodontic brackets, it can be used during orthodontic treatment.