Preventive effect of fluoridated orthodontic resins subjected to high cariogenic challenges

Brazilian Dental Journal

Paula Passalini¹  Tatiana Kelly Da Silva Fidalgo¹  Erika Machado Caldeira¹  Rogerio Gleiser¹  Matilde Da Cunha Gonçalves Nojima¹  Lucianne Cople Maia¹ 

[1] ,Federal University of Rio de Janeiro Dental School Department of Pediatric Dentistry and OrthodonticsRio de Janeiro RJ ,Brazil

关键词: demineralization;    remineralization;    fluoride;    orthodontic;    bracket;   

DOI  :  10.1590/S0103-64402010000300006

来源: SciELO

【 摘 要 】

The aim of the present study was to evaluate the in vitro caries preventive effect of fluoridated orthodontic resins under pH cycling with two types of acid demineralizing saliva. Brackets were bonded to 60 bovine incisors, using either Transbond Plus Color Change (n=30) or Orthodontic Fill Magic (n=30) orthodontic resins. Each group of resin was divided into 3 subgroups (n=10): immersion in remineralizing artificial saliva for 14 days, pH cycling with high cariogenic challenge in acid saliva with pH 5.5, and acid saliva with pH 4.5. After 14 days of pH cycling, the caries preventive effect on the development of white spot lesion was evaluated considering the presence of inhibition zones to white spot lesions using two scores: 0= absence and 1= presence. Kruskal Wallis and Mann-Whitney tests (a=0.05) were used. Formation of white spot lesions was observed only under pH cycling using acid saliva with pH 4.5; with Transbond Plus Color Change being significantly more effective (p<0.05) in preventing the appearance of white spot lesions effect than Orthodontic Fill Magic. The acidity of the demineralizing solution influenced the formation of white spot lesions around orthodontic brackets under highly cariogenic conditions. Transbond Plus Color Change resin presented higher caries preventive effect than Orthodontic Fill Magic.

【 授权许可】

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