Published on:June 2017
    Journal of Pharmacy Practice and Community Medicine, 2017; 3(3):188-190
    Short Communication | doi:10.5530/jppcm.2017.3.38

    Biofilm formation on polytetrafluoroethylene coated versus uncoated brackets in a South Indian population

    Authors and affiliation (s):

    Venkataramana Vannala1, Balachandar2, Kurunji Kumaran2, Raja Sigamani2

    1Department of Orthodontics, College of Dentistry, Gulf Medical University, Ajman, UAE

    2Department of Orthodontics, Rajah Muthiah Dental College & Hospital, Annamalai University, Chidambaram. Tamilnadu, INDIA


    Objective: This study compared the biofilm formation pattern on Polytetrafluoroethylene (PTFE) coated orthodontic brackets with that of uncoated ones. Methods: Fifteen teen aged patients were enrolled for eight weeks with their second premolar symmetrically bonded with uncoated and PTFE-coated orthodontic brackets. Upon completion, the elastomeric ligatures were deboned and removed. Rutherford backscattering detection (RBSD) method was adopted and the RBSD photographs were validated. Results: Analysis showed a total surface area of 21.7 ± 0.7 mm2 per bracket. The biofilm formation was noticed in 4.0 ± 3.6 % (0.9 ± 0.8 mm2) of the bracket surface in case of PTFE-coated brackets versus 22.2 ± 5.4 per cent (4.8 ± 1.2 mm2) on uncoated brackets and in case of PTFE-coated brackets highest amount of biofilm formation was evident in ‘mesial surfaces’ (6.58 ± 4.4 %) and the lowest on the occlusal surfaces (1.29 ± 1.2 %). The comparisons of the 2 interventions/procedures showed significant differences in all the 5 views (p=0.001 for all). Conclusion: The research findings suggest that coating the brackets with PTFE reduces biofilm adhesion to a larger extent and minimizes iatrogenic side effects.

    Key words: Biofilm formation, Polytetrafluoroethylene coating, Orthodontic brackets, RBSD photographs.

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