{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T23:46:20Z","timestamp":1793317580651,"version":"4.5.0"},"reference-count":19,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2020,11,26]],"date-time":"2020-11-26T00:00:00Z","timestamp":1606348800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2020,11,26]],"date-time":"2020-11-26T00:00:00Z","timestamp":1606348800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"The Korea Health Technology R&D Project","award":["HI20C0127"],"award-info":[{"award-number":["HI20C0127"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Head Face Med"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>A new distraction osteogenesis assembly system comprising a fully customized CAD\/CAM-based fixation unit and ready-made distraction unit was developed. The aim of this study was to introduce our new distraction system and to evaluate its accuracy level in a sampled mandibular distraction osteogenesis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Our system consists of a fully customized CAD\/CAM-based fixation plate unit with two plates for each moving and anchoring part, and a ready-made distraction unit with attachment slots for fixation plates. The experimental distractions were performed on 3D-printed mandibles for one control and two experimental groups (<jats:italic>N<\/jats:italic>\u2009=\u200910 for each group). All groups had reference bars on the chin region and teeth to measure distraction accuracy. The control group had the classical ready-made distraction system, and experimental groups 1 and 2 were fitted with our new distraction assembly using a different distractor-positioning guide design. All distracted experimental mandibles were scanned by CT imaging, then superimposed on a 3D simulation to get their discrepancy levels.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The measured 3D distances between the reference landmarks of the surgical simulations and the experimental surgeries for the three groups were significantly different (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001) by statistical analysis. The errors were greater in the control group (with a total average of 19.18\u2009\u00b1\u20093.73\u2009mm in 3D distance between the simulated and actual reference points) than those in the two experimental groups (with an average of 3.68\u2009\u00b1\u20091.41\u2009mm for group 1 and 3.07\u2009\u00b1\u20091.39\u2009mm for group 2). The customized distraction assembly with 3D-printed bone plate units in group 1 and 2, however, did not show any significant differences between simulated and actual distances (<jats:italic>p<\/jats:italic>\u2009&gt;\u20090.999).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Our newly-developed distraction assembly system with CAD\/CAM plate for the distraction osteogenesis of the mandible produced a greater level of accuracy than that of a conventional distraction device. The system appears to address existing shortcomings of conventional distraction devices, including inaccuracy in vector-controlled movement of the system. However, it also needs to be further developed to address the requirements and anatomical characteristics of specific regions.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s13005-020-00241-3","type":"journal-article","created":{"date-parts":[[2020,11,26]],"date-time":"2020-11-26T08:02:34Z","timestamp":1606377754000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Fully-customized distraction assembly for maxillofacial distraction osteogenesis: a novel device and its experimental accuracy verification"],"prefix":"10.1186","volume":"16","author":[{"given":"Sang-Hoon","family":"Kang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hye-Jin","family":"Tak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ha-Won","family":"Park","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin-Ung","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9438-2489","authenticated-orcid":false,"given":"Sang-Hwy","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,11,26]]},"reference":[{"issue":"7","key":"241_CR1","doi-asserted-by":"publisher","first-page":"811","DOI":"10.1016\/j.ijom.2017.03.002","volume":"46","author":"EW Ko","year":"2017","unstructured":"Ko EW, Chen PK, Lo LJ. 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