Pugach MK, Strother J, Darling CL, Fried D, Gansky SA, Marshall SJ, Marshall GW. Dentin caries zones: mineral, structure, and properties. J Dent Res. 2009 Jan; 88(1):71-6.
Pugach MK, Strother J, Darling CL, Fried D, Gansky SA, Marshall SJ, Marshall GW