{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T18:32:50Z","timestamp":1787164370375,"version":"build-2736575974"},"reference-count":30,"publisher":"MJS Publishing, Medical Journals Sweden AB","license":[{"start":{"date-parts":[[2024,10,9]],"date-time":"2024-10-09T00:00:00Z","timestamp":1728432000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["AOS"],"abstract":"<jats:p>Introduction: Third molars (M3) remaining impacted in Class II malocclusion characterised with sagittal mandibular deficiency is a high probability. The null hypothesis of this study is that mesioangular M3s changes position through the eruption way in\u00a0Class II malocclusion treatment\u00a0requiring moderate anchorage\u00a0with four first premolars extraction.\u00a0The aim of this study is to reconsider the decision to surgically extract impacted third molars in four premolars extraction treatment of Class II malocclusion.\nMaterial and Methods: The materials consisted of the pre-treatment and post-treatment lateral cephalograms and orthopantomographs of 30 individuals with skeletal and dental Class II malocclusion with a mean chronological age of 13.48 years, who were treated by the same clinician (H.G.) with four first premolar extractions via the straight wire technique at the Ankara University Faculty of Dentistry Department of Orthodontics, Ankara, Turkey. The sagittal position of the upper and lower incisors and molars, M3\u00a0position and M3\u00a0space were evaluated with the paired-t test; the relationship between the sagittal position of the upper and lower incisors and molars and the change in M3\u00a0position were evaluated with correlation analysis.\u00a0\nResults: The study found the retroclination and mesial movement of the upper incisors and molars, and an increase in the M3\u00a0space by the fixed orthodontic\u00a0treatment. An insignificant steepening of both the upper right M3\u00a0position and the lower right M3\u00a0position was found. A statistically significant increase in the lower right and left side M3\u00a0spaces was found. Positive correlations between lower right M3\u00a0angulation and the sagittal position of the lower incisors and first molars were found.\nConclusion: Improvement in the mesioangulation of the M3s and an increase in the M3\u00a0space were achieved in this study. Based on the findings, it is useful to review the decision for prophylactic surgical extraction of the M3s before orthodontic treatment in such cases, taking into account the risks of postoperative complications.<\/jats:p>","DOI":"10.2340\/aos.v83.42076","type":"journal-article","created":{"date-parts":[[2024,10,9]],"date-time":"2024-10-09T09:51:27Z","timestamp":1728467487000},"page":"582-587","source":"Crossref","is-referenced-by-count":1,"title":["Assessing position changes of impacted third molars in treatment of class II malocclusion with premolars extraction"],"prefix":"10.2340","volume":"83","author":[{"given":"Hatice","family":"Gokalp","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Murat","family":"Kaan Erdem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1183","published-online":{"date-parts":[[2024,10,9]]},"reference":[{"key":"79537","unstructured":"Richardson ME. 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