Avaliação do potencial remineralizante e protetor de um novo dentifrício associado a um gel dual a base de silicato de cálcio e fosfato de sódio contra o desafio erosivo- abrasivo do esmalte

• Autor(a) principal: Maia, Morgana de Menezes [UNESP]
• Data de Publicação: 2017
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/156554; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2018-05-10/000899537.pdf
• topic: Erosão dentária; Esmalte dentário; Fluoreto de fosfato acidulado

The aimof this study was to compare the remineralizing and protective effect of a new dentifrice composed of calcium silicate, sodium phosphate and sodium fluoride, associated to a serum potencializador, claimed as anti-erosive. Sixty cylindrical and highly polished enamel samples were selected and randomly divided into 6 groups (n=10) according to the dentifrice used: Wel (Weleda - 0 ppm F), T12 (Colgate Total 12 - 1450 ppm NaF), PAER (Colgate Pro-Relief Enamel Repair - 1450 ppm sodium monofluorophosphate, 8% arginine), PE (Sensodyne Pro-Enamel - 1425 ppm sodium monofluorophosphate, 5% potassium nitrate), Reg (Regenerate/Unilever - 1450 ppm sodium monofluorophosphate), RegGD (Regenerate + Serum - 1450 ppm NaF). After measuring the initial microhardness (Knoop, 50g/10s) and profiles (contact profilometry), the specimens were submitted to an erosive challenge with citric acid (1%, pH 3.9, 2 min, 4x/day), followed by immersion in artificial saliva (Klimek, 1h, 6x/day) and abrasion (10s, 200g, 2x/day), for 5 days. The initial remineralization and protective effect was measured by microhardness which was obtained after the first acid (KNa1), after the first treatment (KNt) and after the second acid (KNa2).For the initial erosion, NaF, NaF/PN and MPF/Arg promoted enamel rehardening, but only NaF/PN and MPF/CSSP/BS protect it. For the dentin, NaF/PN, MPF/CSS and MPF/CSSP/BS presented significant rehardening ability. Regarding surface loss, all dentifrices promoted similar enamel loss (except NaF/PN, which presented higher values) and for dentin, MPF/CSSP/BS presented a lower loss than NaF/PN, MPF/Arg, and MPF/CSSP. It must be concluded that NaF/PN and MPF/CSSP/BS exhibited the highest protective effect against initial erosion for enamel and dentin, nevertheless, they were not able to maintain this superior protective potential with the persistence of the erosive/abrasive challenges in relation to the other products tested