Prevention of Enamel Demineralisation Around Orthodontic Brackets (An In-vitro Study)
Abstract
Background: Despite extensive research in various preventive technologies over the years, white spot lesions (WSL) development in association with orthodontic treatment with fixed appliances remains unwanted clinical problem.
Aims and objectives: The present study is aimed at determining the difference between demineralisation of enamel at normal and reduced pH around orthodontic brackets and to compare the efficacy of various remineralisation agents used in the study thus establishing the most reliable product available commercially for in-home application that would help in secondary prevention of white spot lesions.
Material and methods: The study sample used for this study comprised of 50 healthy, caries-free premolars that were free from any enamel defects. The teeth were extracted and stored in 10 % buffered formalin till the study. All the teeth were bonded and divided into five groups with 10 teeth each and after application of different cariostatic agents according to the pre-decided criteria were subjected to pH cycling using artificial saliva with a pH of 4.5 as the demineralization agent in order to simulate the oral environment in the in-vitro study. The teeth were analysed using Field-emission Scanning Electron Microscopy (FE-SEM).
Results: The use of Anticay and Amflor significantly helped to prevent the demineralization. Stim Ri-namel was found to be an effective re-mineralizing agent but its effectiveness is less as compared to Anticay and Amflor. Artificial saliva at a pH of 4.5 produced subsurface lesions similar to 3 month intra oral pH cycling.
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