{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T16:24:54Z","timestamp":1791217494218,"version":"4.1.0"},"reference-count":36,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2021,8,18]],"date-time":"2021-08-18T00:00:00Z","timestamp":1629244800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Eur J Dental Education"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Endodontic access cavity is one of the steps most feared by dental students. The objective of the present work was to show the design phases of different realistic macro\u2010models of a lower first molar, showing root canal anatomy and the ideal access cavity.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Virtual models were designed with MeshMixer, MeshLab and Blender from the data collected (X\u2010rays, CBCT and optical impression) and then printed. Two types of printers\u2014FDM (fused deposition modelling) and SLA (stereolithography) printers\u2014were used to obtain different prototypes which led to final models. A satisfaction questionnaire was then sent to students, after manipulation, to assess the relevance of these models.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Two final models of a lower first molar with an extended size (\u00d79) were finally printed with an SLA laser printer with a transparent liquid resin. The first model represented the tooth with its optimal endodontic access cavity. The second one was designed to be divided into two parts according to a mesio\u2010distal axis in order to visualise the root canal system. Most students found these macro\u2010models to be effective tools for endodontic training.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>3D printing is a proven technology which is no exception in dentistry. Some authors have already proposed 3D\u2010printed replicas of teeth for endodontic education. Macro\u2010models have been designed, printed and made available to students during preclinical courses before and during training.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>These educational macro\u2010models should strengthen the knowledge and skills of students to improve their clinical and future practice within the dental office.<\/jats:p><\/jats:sec>","DOI":"10.1111\/eje.12709","type":"journal-article","created":{"date-parts":[[2021,8,6]],"date-time":"2021-08-06T18:57:50Z","timestamp":1628276270000},"page":"347-353","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Design of 3D\u2010printed macro\u2010models for undergraduates' preclinical practice of endodontic access cavities"],"prefix":"10.1111","volume":"26","author":[{"given":"Mat\u00e9o","family":"Pouha\u00ebr","sequence":"first","affiliation":[{"name":"UFR Odontologie Universit\u00e9 de Rennes 1  Rennes 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