Effects of first premolar extraction on maxillary and mandibular third molar angulation after orthodontic therapy

Journal of Oral Biology and Craniofacial Research
Avinash GohilotKanhoba Mahabaleshwar Keluskar

Abstract

To compare the change in the angulation of developing mandibular third molar in both first premolar extraction and non-extraction cases and to determine whether premolar extraction results in a more mesial movement of the mandibular buccal segment and causes favorable rotational changes in the mandibular third molar tilt, which can enhance later eruption of the third molars. Pretreatment (T1) and post treatment (T2) panoramic radiographs were taken of 25 subjects (age 14-19 years) who had been treated by the extraction of all the first premolars and 25 subjects who had been treated with non-extraction. The horizontal reference plane was used to measure and compare the changes in the angles of the developing mandibular third molars. The mean uprighting of the maxillary third molars seen in the extraction group was 4 ± 9° on the left side and -17 ± 13° on the right side following treatment (T2 _ T1). For the non-extraction group the mean difference was -16 ± 12° on the left side and 2 ± 13° on the right side. There was a statistically significant difference between the groups (P _ 0.021 on the right side and P _ 0.041 on the left side). Mandibular 3rd molars in extraction group showed no statistical significant change in the angu...Continue Reading

Citations

Aug 10, 2019·Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research·Dhanyashri KamalakannanSridevi Padmanaban
Feb 17, 2015·World Journal of Clinical Cases·Konstantinia Almpani, Olga-Elpis Kolokitha
Dec 8, 2020·Journal of International Society of Preventive & Community Dentistry·Keerthan ShashidharHarikrishnan S Nair
Sep 30, 2021·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Ezgi Sunal AkturkGokmen Kurt

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