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. 2017 Oct 12;10(10):1170. doi: 10.3390/ma10101170

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© 2017 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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Artificial teeth. (A) Artificial molar teeth used in this experiment; (B) Superimposition images of the prepared canal spaces before canal obturation. The white line in the canal space (arrow) indicates a difference between samples. (1) The overlapping image of samples 1 and 2. (2) The overlapping image of samples 1 and 3.