Long-Term Fluoride Exchanges at Restoration Surfaces and Effects on Surface Mechanical Properties
Figure 4
(a) The effect of 1-hour fluoride recharge on composite hardness after 18 months of aging in lactic acid ph 4 (L.A.) and deionized water (W). (b) The effect of 1-hour fluoride recharge on composite elastic modulus after 18 months of aging in lactic acid ph 4 (L.A.) and deionized water (W).
