Estudo in situ da composição bioquimica da placa dental em função da frequencia diaria do uso de sacarose

AUTOR(ES)
DATA DE PUBLICAÇÃO

1994

RESUMO

Sugar intake modify the composition of dental plaque, but there are douts about the concentration of inorganic substances and few data about fluoride ,mainly related to frequency of sucrose exposure. To evaluate this, it was performed a crossover study in four phases of 28 days. Twelve volunteers using acrylic palatal appliances, containing 4 blocks C3 x 3 mm) of dental enamel took part in this study. During "each phase while 03 volunteers didn t use sucrose, 03 droped on the enamel blocks 2x/day sucrose 20%, 03 4x/day and 03 8x/day. After each phase the dental plaque formed on the blocks was collected for analysis. The volunteers were drinking fluoridated water 0.7 ppm and used a non-fluoride dentifice. Dental plaque was weighed and after extraction with HCI 0.5M the soluble concentrations of Ca, P, F and total carboydrate were determinated. The preciptate was extracted with NaOH and the alkali soluble carbohydrate concentration was determined. The results ( mean ± sd) related to sucrose frequency (from zero to 8x/day) were respectivelly FC18. 71 ± 3. 31; 9. 64± 2. 81; 2. 65:t0. 77; 2.69 ±0.44 in pg/g); PC3. 74± 1.12; O. 75± 0.19; 0.37± 0.06; 0.37 ± 0.04 in mg/g); Ca C12.85± 2.51; 3. 99 ± 1.02; 4.0± 1.09; 4. 17± 1.07 in mg/g); carbohydrate acid soluble C5.65 ± 0.68; 3. 78± 0.63; 3.5 65 ± 0.60; 4.75 ±0.73 pg/mg); carbohydrate alkali-soluble (12.00 ±2.60; 11.54 ±1.81; 13.9 ± 3.29; 35.84 ± 6.93 pg/mg). Statistical analyses showed that frequency of sucrose consumption reduced signficantly (p 0.05) the dental plaque Ca. P and F concentrations and increased the carbohydrate alkali-soluble concentration. It was concluded that as the frequency of sucrose exposure increases. more cariogenic will be the dental plaque formed.

ASSUNTO(S)

placas dentarias bioquimica - composição caries dentarias

ACESSO AO ARTIGO

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