اثر ژل كلرهگزيدين فلورايد ساخت ايران بر كاهش ميزان استرپتوكوك موتانس اطراف براكت هاي ارتودنسي

Eff ect of mixed chlorhexidine- flno ride gel made in Iran on the level of Mutans Streptococci around orthodontic brackets

Background and Aim: Patients with fixed orthodontic appliances often experience an increase in the rate of dental caries. Appling chlorhexidine and fluoride is knowrn to be an effective method to solve this problem, since Mutans Streptococci is described as the most important bacteria related to the etiology of dental caries. The aim of this study was to evaluate clinically the application of a chlorhexidine-fluoride gel made in Iran on the level of Mutans Streptococci in plaque adjacent to bonded orthodontic brackets. Materials & Methods: In this double blind clinical trial 37 patients were selected. The patients were divided into 2 groups: those treated with chlorhcxidine-lluoride gel five times with one week interval (group A) and those treated w ith placebo gel (group B). The level of Mutans Streptococci in the plaque of canine and second premolar of Maxilla before and after treatment was evaluated and compared by Wilcoxon Signed Rank test. The range of changes in group A was compared with group B by Mann-whitney test. Results: Statistical analysis showed a significant difference hetween baseline and final colony count results in group A (P-0.000I) but no significant difference in group B and also Mann-Whitney lest showed a significant difference between the 2 groups (P<0.0001). Conclusion: Chlorhexidiue-fluoride significantly decreased the level of Mutans Streptococci in plaque around the orthodontic brackets.