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  • Erosion protection conferred by whole human saliva, dialysed saliva, and artificial saliva.

Erosion protection conferred by whole human saliva, dialysed saliva, and artificial saliva.

Scientific reports (2016-10-06)
T Baumann, J Kozik, A Lussi, T S Carvalho
要旨

During dental erosion, tooth minerals are dissolved, leading to a softening of the surface and consequently to irreversible surface loss. Components from human saliva form a pellicle on the tooth surface, providing some protection against erosion. To assess the effect of different components and compositions of saliva on the protective potential of the pellicle against enamel erosion, we prepared four different kinds of saliva: human whole stimulated saliva (HS), artificial saliva containing only ions (AS), human saliva dialysed against artificial saliva, containing salivary proteins and ions (HS/AS), and human saliva dialysed against deionised water, containing only salivary proteins but no ions (HS/DW). Enamel specimens underwent four cycles of immersion in either HS, AS, HS/AS, HS/DW, or a humid chamber (Ctrl), followed by erosion with citric acid. During the cycling process, the surface hardness and the calcium released from the surface of the specimens were measured. The different kinds of saliva provided different levels of protection, HS/DW exhibiting significantly better protection than all the other groups (p < 0.0001). Different components of saliva, therefore, have different effects on the protective properties of the pellicle and the right proportions of these components in saliva are critical for the ability to form a protective pellicle.

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製品内容

Sigma-Aldrich
Pur-A-Lyzer Mega 透析キット, Mega 1000, capacity 3-20 mL, pkg of 5 Mega dialysis tubes (in individual pouch), MWCO 1 kDa, cap, 20 mL displacement