Erosion Protection by Calcium Lactate/Sodium Fluoride Rinses under Different Salivary Flows in vitro

This study investigated the effect of a calcium lactate pre-rinse on sodium fluoride protection in an in vitro erosion-remineralization model simulating two different salivary flow rates. Enamel and dentin specimens were randomly assigned to 6 groups (n = 8), according to the combination between rinse treatments - deionized water (DIW), 12 mm NaF (NaF) or 150 mm calcium lactate followed by NaF (CaL + NaF) and unstimulated salivary flow rates - 0.5 or 0.05 ml/min simulating normal and low salivary flow rates, respectively. The specimens were placed into custom-made devices, creating a sealed chamber on the specimen surface connected to a peristaltic pump. Citric acid was injected into the chamber for 2 min, followed by artificial saliva (0.5 or 0.05 ml/min) for 60 min. This cycle was repeated 4x/day for 3 days. Rinse treatments were performed daily 30 min after the 1st and 4th erosive challenges, for 1 min each time. Surface loss was determined by optical profilometry. KOH-soluble fluoride and structurally bound fluoride were determined in specimens at the end of the experiment. Data were analyzed by 2-way ANOVA and Tukey tests (alpha = 0.05). NaF and CaL + NaF exhibited significantly lower enamel and dentin loss than DIW, with no difference between them for normal flow conditions. The low salivary flow rate increased enamel and dentin loss, except for CaL + NaF, which presented overall higher KOH-soluble and structurally bound fluoride levels. The results suggest that the NaF rinse was able to reduce erosion progression. Although the CaL prerinse considerably increased F availability, it enhanced NaF protection against dentin erosion only under hyposalivatory conditions. (C) 2014 S. Karger AG, Basel

Comparação do efeito do bochecho de triclosan + copolímero + fluor, com a clorexidina, sobre a taxa de formação da placa dentária, retenção de antimicrobiano na placa dentária e na saliva e redução de estreptococos do grupo mutans na saliva: estudo clínico randomizado, cruzado, duplo-cego controlado

Pós-graduação em Ciências Odontológicas - FOAR

Estudo da infiltração marginal em restaurações de resinas compostas para dentes posteriores: efeito de material, preparo cavitário e condicionamento do esmalte a nível cervical

Pós-graduação em Odontologia Restauradora - ICT

Proposta de um modelo de assistência odontológica em saúde coletiva fundamentado na prevenção da cárie e com a participação de pessoal auxiliar

Pós-graduação em Odontologia Restauradora - ICT

Comparação da infiltração marginal de restaurações adesivas empregando instrumento rotativo ou um sistema químico-mecânico na remoção do tecido cariado

Pós-graduação em Odontologia Restauradora - ICT

Oral microbial colonization in children with sickle cell anaemia under long-term prophylaxis with penicillin

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

In situ evaluation of low-fluoride toothpastes associated to calcium glycerophosphate on enamel remineralization

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Systematic Screening of Plant Extracts from the Brazilian Pantanal with Antimicrobial Activity against Bacteria with Cariogenic Relevance

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Clinical evaluation of failures in removable partial dentures

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Impacto da saúde bucal na qualidade de vida de adolescentes grávidas

Pós-graduação em Odontologia Preventiva e Social - FOA

Saúde bucal do binômio mãe-filho: aspectos clínicos, sócio-comportamentais e qualidade de vida

Pós-graduação em Odontologia Preventiva e Social - FOA

Efeito de vernizes fluoretados suplementados com trimetafosfato de sódio na desmineralização e remineralização do esmalte bovino: estudos in vitro e in situ

Pós-graduação em Ciência Odontólogica - FOA

Desenvolvimento da microbiota oral de bebês: análise longitudinal por pirosequenciamento da microbiota de bebês e suas mães dentro de um Programa de Saúde Bucal para Primeira Infância

Pós-graduação em Biopatologia Bucal - ICT

Condições de saúde bucal das gestantes atendidas na atenção primária do município de Botucatu-SP e seu conhecimento sobre a inportãncia da saúde bucal na gestação

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Accuracy of radiographic examination in determining the depth of approximal carious lesions in primary molars

The purpose of this study was to evaluate the accuracy of the depth of carious lesions on bitewing radiographs. Methods Recently extracted primary molars had their proximal surfaces evaluated visually (EC) and classified as healthy surface (0), signs that suggest the presence of carious lesions in enamel (1), signs of a superficial lesion in dentin (2) and carious lesions in deep dentin (3). Results The results were obtained by consensus between the investigators. The gold standard was determined by histological analysis. The values of sensitivity, specificity, accuracy and area under the ROC (Receiver Operating Characteristic) curve were evaluated. There was equilibrium between sensitivity (76.92% EC and 88.46% ER) and specificity (95.83% EC and 95.83% ER). Accuracy was 86.01% (EC) and 88.46% (ER). The Spearman correlation test was used to prove the correlation between clinical and radiographic examinations (0.886), for clinical and histological (0.736) and for radiographic and histological analysis (0.843).