Sb. Geiger et S. Weiner, FLUORIDATED CARBONATOAPATITE IN THE INTERMEDIATE LAYER BETWEEN GLASS-IONOMER AND DENTIN, Dental materials, 9(1), 1993, pp. 33-36
The intermediate layer between a glass ionomer restoration and dentin
was examined morphologically by scanning electron microscopy (SEM) and
Fourier transform infrared spectroscopy (FTIR). SEM showed strong bon
ding between the dentin and glass ionomer and formation of an intermed
iate layer between them. FTIR spectra of successive scrapings through
the ionomer/dentin interface zone showed that the intermediate layer i
s composed primarily of mineral fluoridated carbonatoapatite. The pres
ence of this sparingly soluble mineral at the interface between the to
oth and the restoration may provide high resistance to secondary carie
s and may, thus, be of great clinical importance.