{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:52:21Z","timestamp":1787028741752,"version":"build-2736575974"},"reference-count":20,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,12,2]],"date-time":"2025-12-02T00:00:00Z","timestamp":1764633600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JPM"],"abstract":"<jats:p>Background\/Objectives: The primary objective of this study was to evaluate the accuracy of maxillary repositioning using a two-plate patient-specific osteosynthesis system. The secondary objective was to determine whether accuracy is influenced by the number of maxillary segments. Methods: A retrospective single-centre cohort study was conducted on patients undergoing bimaxillary orthognathic surgery with a maxilla-first two-plate PSO system. Virtual Surgical Planning was performed based on the Cone-Beam Computed Tomography (CBCT) data of the patient, with patient-specific plates being designed and manufactured accordingly. Postoperative CBCT scans (7\u201310 days post-op) were registered to the preoperative plan, and deviations in translation and rotation between the plan and results were determined. Sub-group analyses were performed on one-, two- and three-segment maxillary osteotomy patient groups. Results: The inclusion criteria were met by 61 patients, of whom 47 were included for analysis (mean age 27.9 \u00b1 9.4 years). Sub-millimetre median translational accuracies were found: anteroposterior 0.7 mm, transverse 0.4 mm, vertical 0.6 mm. The median rotational deviations were \u22641\u00b0 for yaw and roll, and 1.6\u00b0 for pitch. Accuracy was consistent across the one-, two-, and three-segment osteotomy groups. Conclusions: The two-plate PSO system is clinically accurate in bimaxillary surgery. There is no significant difference in accuracy between one-piece and segmental osteotomies of the maxilla when using the two-plate system.<\/jats:p>","DOI":"10.3390\/jpm15120588","type":"journal-article","created":{"date-parts":[[2025,12,5]],"date-time":"2025-12-05T16:37:02Z","timestamp":1764952622000},"page":"588","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Two-Plate Splintless Repositioning in Bimaxillary Surgery: Accuracy and Influence of Segmental Osteotomies in a Consecutive Single-Centre Cohort"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3433-3351","authenticated-orcid":false,"given":"Hylke","family":"van der Wel","sequence":"first","affiliation":[{"name":"Clinic for Virtual Surgical Planning, 3D VSP B.V., Hoogwatum 2, 9906 TD Groningen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8225-8140","authenticated-orcid":false,"given":"Tom Lucas","family":"Zwijnenberg","sequence":"additional","affiliation":[{"name":"Clinic for Virtual Surgical Planning, 3D VSP B.V., Hoogwatum 2, 9906 TD Groningen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2536-4786","authenticated-orcid":false,"given":"Johan","family":"Jansma","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery, Expertcenter for Orthofacial Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728 NT Groningen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rutger Hendrik","family":"Schepers","sequence":"additional","affiliation":[{"name":"Department of Oral and Maxillofacial Surgery, Expertcenter for Orthofacial Surgery, Martini Hospital Groningen, Van Swietenplein 1, 9728 NT Groningen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6641-7568","authenticated-orcid":false,"given":"Haye Hendrik","family":"Glas","sequence":"additional","affiliation":[{"name":"Clinic for Virtual Surgical Planning, 3D VSP B.V., Hoogwatum 2, 9906 TD Groningen, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1186\/1746-160X-3-21","article-title":"The Hierarchy of Stability and Predictability in Orthognathic Surgery with Rigid Fixation: An Update and Extension","volume":"3","author":"Proffit","year":"2007","journal-title":"Head. 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