Protective effect of the in situ formed short-term salivary pellicle

Archives of Oral Biology
Matthias HannigYuriy Nekrashevych

Abstract

Salivary pellicle, as previously investigated, protects the enamel surface after certain processes of maturation against the influence of acidic agents. The aim of the present study was to investigate the protective effect of the short-term salivary pellicle formed in situ over periods of 3, 60 and 120 min. Six human volunteers used intraoral acrylic splints with bovine enamel samples fixed at the buccal and palatal sites of the maxillary first molars and second premolars. Enamel specimens (n = 252) with and without pellicle were immersed for 60 s in 1.0% citric acid solution under agitation. Knoop surface hardness (KHN) of uneroded polished enamel was measured as a baseline and estimated immediately after erosive treatment reflecting the microhardness loss (DeltaKHN). The amounts of calcium dissolved from the eroded enamel surface were analysed by atomic absorption spectroscopy and scored in mg/l per 10 mm2 of enamel surface area. In addition, the scanning electron microscope was used for the micromorphological examination of the erosive alterations of the enamel surface. The average microhardness loss values after erosion of the enamel samples with buccally/palatally formed pellicle layers were measured as 139.1/144.9 DeltaKH...Continue Reading

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Citations

Jan 30, 2008·Clinical Oral Investigations·A Lussi, T Jaeggi
Jan 13, 2009·Clinical Oral Investigations·Christian Hannig, Matthias Hannig
Aug 11, 2010·Clinical Oral Investigations·Christian HannigThomas Attin
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