Degradation of Luting Cements Measured in vitro and in vivo

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Abstract
The degradation of luting cements was quantified when these cements were held as a 20-μm cement layer. The degradation process, which is mostly a sequence of absorption, disintegration, and solution, was expressed by a time-constant (τ ). By using the same test specimens in vitro as well as in vivo, we determined the correlation of both situations.