| Journal: | Revista de clinica e pesquisa odontologica |
| Database: | PERIÓDICA |
| System number: | 000323445 |
| ISSN: | 1807-5274 |
| Authors: | Can, Gulsen1 Kaplan, Rukiye2 Kalayci, Sukru3 |
| Institutions: | 1University of Ankara, School of Dentistry, Ankara. Turquía 2University of Karadeniz, School of Dentistry, Ankara. Turquía 3University of Gazi, School of Chemistry, Ankara. Turquía |
| Year: | 2009 |
| Season: | May-Ago |
| Volumen: | 5 |
| Number: | 2 |
| Pages: | 121-126 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | OBJECTIVES: The aim of this study was to assess the effect of different extraction media and time on the amount and pattern of fluoride release from compomers. MATERIAL AND METHOD: 42 specimens (n = 7 per group) in disc forms (7 mm diameter, 2 mm thickness) from three different compomers (were placed in artificial saliva (pH = 7.0) and lactic acid (pH = 5.2). The amount of the fluoride in these solutions were measured at 1st, 7th, 14th, 21th and 28th day time intervals by means of the fluoride ion selective electrode.The fluoride amount was calculated by concentration (ppm). The amount and the pattern of fluoride release was dependent on both the material, the storage medium and time. RESULTS: Fluoride release was evident for all the compomers but the rate of release varied considerably between the materials. Significant differences were also found between the different types of compomer (p < 0.01). A time dependent increase in the fluoride content was observed for all the compomers in both media. For all the tested materials, the fluoride release was higher in the lactic acid (p < 0.01).The amount of fluoride release was the most from Compoglass followed by Dyract AP and Glasiosite at 28th days, in both artificial saliva and lactic acid respectively. The least amount of fluoride release was observed at the first day |
| Portuguese abstract | OBJETIVOS: O objetivo deste estudo foi determinar o efeito de diferentes meios e tempo na quantidade e padrão de liberação de flúor por compômeros. MATERIAL E MÉTODO: 42 espécimes (n = 7 por grupo) em discos (7 mm de diâmetro, 2 mm de espessura), três compômeros diferentes, foram colocados em saliva artificial (pH 7,0) e ácido lático (pH 5,2). A quantidade de flúor nas soluções foram medidas a intervalos semanais, do 1º ao 28.o dias (quatro semanas) por meio de eletrodos seletivos para íons flúor. A quantidade de flúor foi calculdada por concentração (ppm). A quantidade e o padrão da liberação de flúor variou consideravelmente tanto do material, do meio de armazenamento e tempo. RESULTADOS: A liberação de flúor foi evidente por todos os compômeros, mas a taxa de liberação variou consideravelmente entre os diferentes tipos de compômeros (p < 0.01). Um aumento relacionado com o tempo no conteúdo de flúor foi observado para todos os compômeros em ambos os meios. Para todos os materiais testados, a liberação de flúor foi maior no ácido lático (p < 0.01). A quantidade de liberação de flúor foi maior pelo Compoglass®, seguido pelo Duract AP® e Glasiosite® aos 28 dias, tanto na saliva artificial como no ácido lático respectivamente. A menor liberação de flúor foi observada no primekro dia |
| Disciplines: | Medicina |
| Keyword: | Odontología, Fluoruro, Compómeros, Saliva artificial, Acido láctico, Materiales dentales, Restauración |
| Keyword: | Medicine, Dentistry, Fluoride, Compomers, Artificial saliva, Lactic acid, Dental materials, Restoration |
| Full text: | Texto completo (Ver HTML) |
