Long-Term Fluoride Exchanges at Restoration Surfaces and Effects on Surface Mechanical Properties

Table 4

The intrinsic bimonthly fluoride ion release by Fuji IX Extra over 18 months of aging.

Aging time (months)	0–2	3-4	5-6	7-8	9-10	11-12	13-14	15-16	17-18
Fluoride ion release (μg/cm^2)	145.7	102.9	80.1	61.2	56.1	50.0	48.0	40.1	38.5