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. 2021 Jan 20;14(3):492. doi: 10.3390/ma14030492

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Frequency (percent of specimens with the respective findings of the adhesive interface micromorphology) by luting agent, after dual-curing (DC) or self-curing (SC) based on 10 polished specimens per group (experiment 1). (A) Marginal gaps between enamel and luting agents (n = 10). (B) Interdiffusion zones from the central or lateral dentin area were evaluated in each of the 10 specimens per group. The criterion was rated as present in the respective specimen if it was found in at least one of the two evaluated micrographs (central or lateral dentin). (C) Tag-like structures from the central or lateral dentin area were evaluated in each of the 10 specimens per group. The criterion was rated as present in the respective specimen if it was found in at least one of the two evaluated micrographs (central or lateral dentin).