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. 2021 Jan 27;25(8):4927–4940. doi: 10.1007/s00784-021-03801-2

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — The Tetric EvoFlow Bulk Fill (TEF) flowable liner in gp3-fl/TEF + TBFincremental has many medium-sized shrinkage vectors pointing mainly downward, as seen with the radiographic plane in the background (a, b). The top view reveals shrinkage vectors pointing toward one side of the restoration (c). Increment 1 and increment 2 of Tetric EvoCeram Bulk Fill (TBF) show very few and much smaller shrinkage vectors (d, e, g, h). The radiolucent area on the right side of the cavity is related to the adhesive, which is covered by a thin film of flowable liner (a, d, g). The top view reveals the horizontal movement of shrinkage vectors toward the left side of the cavity (c, f, i). The shrinkage vectors are magnified by a factor of 10 for better visualization. The SEM images (at × 200 magnification) show perfect margins (k, n) and a perfect cavity floor (m) except for a small gap (arrows) in one area of the cavity floor (l)