The effects of two mouth rinses

Jamilian,A,Saghiri A, Ghasemi M, Ghasemian A, Borna N, Kamali Z. The effects of two mouth rinses on shear bond strength of orthodontic brackets – An In-vitro study. Virtual Journal of Orthodontics June, 2011: http://www.vjo.it/

Abstract:

Aims: The purpose of this study was to evaluate the effects of two commercial mouth washes and artificial saliva on the shear bond strength (SBS) of metallic orthodontic brackets bonded to teeth.

Methods and subjects: To this aim, 45 human premolars were divided into three equal groups. The samples of all three groups were stored in artificial saliva for two weeks.

Group II and III samples were rinsed in Orthokin® and Oral B® mouth rinses for 60 seconds per day. SBS and adhesive remnant index (ARI) of all three groups were evaluated and compared with each other. In order to assess SBS the brackets were debonded using a shear-peel load on a universal testing machine (Instron Corporation, Canton, MA, USA) at a crosshead speed of 1 mm/min. The load was recorded at bond failure and used to calculate the bond strength.

Results: Artificial saliva was found to have the highest SBS for 15.27±0.58 MPa, followed by Oral B® group for 10.11±0.94 MPa. Orthokin® group had the lowest SBS for 7.59±0.59. One-way ANOVA showed that these differences were statistically significant.

Conclusion: Chemical ingredients of three groups might be the reason of SBS differences.