{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,19]],"date-time":"2026-03-19T23:50:21Z","timestamp":1773964221624,"version":"3.50.1"},"reference-count":39,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2022,2,25]],"date-time":"2022-02-25T00:00:00Z","timestamp":1645747200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>An implant template with great precision is significantly critical for clinical application. Currently, the application of an immediate implant remains limited by the deviations between the planned and actual achieved positions and long periods required for preparation of implant templates. Material Extrusion (MEX), as one kind of 3D printing method, is well known for its low cost and easy operation. However, the accuracy of the implant template printed by MEX has not been fully researched. To investigate the accuracy and feasibility of in vitro computer-guided surgery assisted with a MEX printed template, unidentified plaster samples missing a maxillary molar are digitalized. Mimics software (Materialise, Leuven, Belgium) is used for preoperative design. Surgical templates are fabricated by a MEX 3D printer (Lingtong III, Beijing SHINO, Beijing, China). Postoperative CBCT data are obtained after surgical template placement. The differences in positions of X, Y, Z, and dXYZ as well as angulations between the placed and the designed template are measured on labiolingual and mesiodistal planes. The deviations of the planned and the actual outcome in each dimension are observed and analyzed. Data from different samples indicate that the mean deviation of the angle measures approximately 3.640\u00b0. For position deviation, the maximum deviation is found in the z-direction and the mean deviation is about 0.365 \u00b1 0.136 mm. The mean deviation of space Euclidean distance dXYZ is approximately 0.537 \u00b1 0.123 mm. Implant templates fabricated by MEX present a relatively high accuracy for tooth-supported guide implantation.<\/jats:p>","DOI":"10.3390\/ma15051738","type":"journal-article","created":{"date-parts":[[2022,2,27]],"date-time":"2022-02-27T20:47:17Z","timestamp":1645994837000},"page":"1738","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Material Extrusion Based Fabrication of Surgical Implant Template and Accuracy Analysis"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2735-3805","authenticated-orcid":false,"given":"Chengyu","family":"Zhang","sequence":"first","affiliation":[{"name":"Beijing Engineering Research Center of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Beijing International Science and Technology Cooperation Base of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanping","family":"Yuan","sequence":"additional","affiliation":[{"name":"Beijing Engineering Research Center of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Beijing International Science and Technology Cooperation Base of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jimin","family":"Chen","sequence":"additional","affiliation":[{"name":"Beijing Engineering Research Center of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Beijing International Science and Technology Cooperation Base of 3D Printing for Digital Medical Health, Beijing University of Technology, Beijing 100124, China"},{"name":"Institute of Laser Engineering, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,2,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1895","DOI":"10.1016\/j.joen.2014.05.009","article-title":"The importance of cone-beam computed tomography in the management of endodontic problems: A review of the literature","volume":"40","author":"Venskutonis","year":"2014","journal-title":"J. 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