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. 2019 Aug 1;7(3):77. doi: 10.3390/dj7030077

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© 2019 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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(a) Piezosurgery was used to prepare position 4.4 for implant placement. (b) The other two tunnels were drilled, and bone biopsies (c) were collected with a trephine.