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Preventive effect of fluoridated orthodontic resins subjected to high cariogenic challenges
Passalini, Paula; Fidalgo, Tatiana Kelly da Silva; Caldeira, Erika Machado; Gleiser, Rogerio; Nojima, Matilde da Cunha Gonçalves; Maia, Lucianne Cople.
  • Passalini, Paula; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
  • Fidalgo, Tatiana Kelly da Silva; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
  • Caldeira, Erika Machado; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
  • Gleiser, Rogerio; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
  • Nojima, Matilde da Cunha Gonçalves; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
  • Maia, Lucianne Cople; Federal University of Rio de Janeiro. Dental School. Department of Pediatric Dentistry and Orthodontics. Rio de Janeiro. BR
Braz. dent. j ; 21(3): 211-215, 2010. ilus, tab
Article in English | LILACS | ID: lil-556819
ABSTRACT
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.
RESUMO
O objetivo do presente estudo foi avaliar in vitro o efeito preventivo a cárie de resinas ortodônticas fluoretadas submetidas à ciclagem de pH utilizando dois tipos de saliva desmineralizadora. Bráquetes de incisivos centrais foram colados em 60 incisivos bovinos, utilizando a resina ortodôntica Transbond Plus Color Change (n=30) ou Fill Magic (n=30). Cada grupo foi dividido em 3 subgrupos (n=10) imersão em saliva artificial remineralizante por 14 dias e simulação de alto desafio cariogênico com ciclagem de pH em saliva ácida com pH 5,5 ou pH 4,5. Após 14 dias de ciclagem de pH, o efeito preventivo de cárie foi avaliado por meio da formação de halo de inibição da mancha branca, adotando-se os escores 0-ausência e 1-presença. Os testes Kruskal Wallis e Man-Whitney (a=0,05) foram aplicados. A formação de lesões de mancha branca foi observada somente na ciclagem de pH com saliva ácida a pH 4,5; sendo o Transbond Plus Color Change significantemente mais efetivo na prevenção ao desenvolvimento de mancha branca quando comparados ao Fill Magic (p<0,05). O pH da solução desmineralizante influenciou na formação de lesões de mancha branca circunjacentes aos bráquetes em condições de alto desafio cariogênico. A Transbond Plus Color Change apresentou maior efeito preventivo de cárie em relação ao Fill Magic.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Acrylic Resins / Cariostatic Agents / Fluorides, Topical / Tooth Demineralization / Dental Caries / Dental Enamel Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Rio de Janeiro/BR

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Full text: Available Index: LILACS (Americas) Main subject: Acrylic Resins / Cariostatic Agents / Fluorides, Topical / Tooth Demineralization / Dental Caries / Dental Enamel Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Rio de Janeiro/BR