Evaluation of the effects of fluoride mouth rinse and varnish on the early biofilm formation of Streptococcus mutans in two types of orthodontic adhesive resins: An in vitro study

• Published in: Dental research journal 2022-01, Vol.19 (1), p.54-54
• Main Authors: Mosayebi, Neda, Toodehzaeim, Mohammad-Hossein, Zandi, Hengameh, Joshan, Neda, Haerian, Alireza
• Format: Article
• Language: English
• Subjects: composite resins; fluoride; Fluorides; Original; streptococcus mutans
• ISSN: 1735-3327; 2008-0255
• DOI: 10.4103/1735-3327.351343

BackgroundThe aim of the present study is to compare the antibacterial effect of fluoride mouth rinse and fluoride varnish on the primary biofilm formation of Streptococcus mutans (S. mutans) in two types of orthodontic adhesives. Materials and MethodsThis is an in vitro study in which forty composite discs of Transbond XT and Lightbond were divided randomly into 4 groups: Group 1: Control group (not treated with fluoride), Group 2: Rinsed by 0.2% fluoride mouth rinse, Group 3: Rinsed by 0.05% fluoride mouth rinse, and Group 4: Treated by varnish fluoride. Then each group was placed in S. mutans suspension. Bacterial suspension from each treatment was subcultured onto the surface of Mueller-Hinton agar plates, and bacterial growth was assessed. The results were analyzed by analysis of variance test and Scheffé test was run to compute the binary groups (P < 0.05). ResultsThere was a statistically significant reduction in the viability of S. mutans in treated groups by fluoride but no significant difference between two types of composites. ConclusionThe results of this study demonstrated that S. mutans colonies were sensitive to fluoride and their most effective form was varnish. There was no significant difference in early biofilm formation of S. mutans in two types of orthodontic adhesive resins Transbond XT and Lightbond.