Efeito de dentifrícios com concentração reduzida de fluoreto associada ao trimetafosfato de sódio sobre a erosão do esmalte dentário

• Autor(a) principal: Cruz, Nathália Viana de Souza [UNESP]
• Data de Publicação: 2010
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/156229; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-11-06/000893514.pdf
• topic: Erosão dentária; Dentifrícios; Esmalte dentário; Fosfatos; Fluoretos; Tooth erosion

Preventive strategies to reduce mineral loss from acidic attack are of extremely importance for the control of dental erosion. The aim of this in vitro study was to evaluate dentifrices with low (250 μg/g) fluoride (F) concentration and sodium trimetaphosphate (TMP) on enamel erosion. Enamel blocks were assigned to 6 groups (n = 24), according to duration of erosive challenges (2 or 5 days) and type of dentifrice: Placebo (no F or TMP), Sensodyne Pro-Enamel (1,425 μg F/g), 250 μg F/g, 250 μg F/g + 0.25% TMP, 250 μg F/g + 0.50% TMP, 250 μg F/g + 1.00% TMP. The blocks (n=144) were submitted to erosive challenges (Sprite Zero®) 4x per day/5 minutes followed by dentifrice treatment (1:3) for 15 seconds and storage in artificial saliva (37°C). The alterations of the enamel were quantified using profilometry (μm) and Knoop hardness test (SHf). The data were analyzed using a 2-way ANOVA test followed by a Bonferroni correction (p<0.05). The results of surface hardness (SHf) showed higher values of hardness for groups 250 TMP1.0 and 1425 (p<0.05), regardless of duration of erosive challenges. Groups with 250 μg F/g and TMP showed a similar enamel wear (p>0.05). It was concluded that dentifrices with low F concentration (250 μg/g) and TMP were able to reduce enamel wear