Dentoskeletal effects of miniscrew-anchored maxillary protraction: Evaluating the role of mandibular anchorage bar and night facemask

This study evaluated the dentoskeletal effects of miniscrew-anchored maxillary protraction, which included a mandibular anchorage bar and a night facemask in adolescents. A total of 20 growing patients with Class III malocclusion and maxillary deficiency were treated with a hybrid hyrax expander wit...

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Published in:American journal of orthodontics and dentofacial orthopedics 2024-12
Main Authors: Manhães, Fernando Rayes, Pereira da Silva, Tafnes, André, Cristiane Barros, Valdrighi, Heloísa Cristina, Carmo de Menezes, Carolina, Vedovello, Silvia A.S.
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container_title American journal of orthodontics and dentofacial orthopedics
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creator Manhães, Fernando Rayes
Pereira da Silva, Tafnes
André, Cristiane Barros
Valdrighi, Heloísa Cristina
Carmo de Menezes, Carolina
Vedovello, Silvia A.S.
description This study evaluated the dentoskeletal effects of miniscrew-anchored maxillary protraction, which included a mandibular anchorage bar and a night facemask in adolescents. A total of 20 growing patients with Class III malocclusion and maxillary deficiency were treated with a hybrid hyrax expander with 2 miniscrews in the maxilla and a mandibular anchor bar supported in 2 miniscrews in the anterior region of the mandible. Class III elastics were used from the maxillary first molars to the mandibular anchorage bar, joining the mandibular miniscrews installed between permanent incisors and canines. The variables that met the presuppositions of a parametric analysis were analyzed using the paired t test, and the remaining variables were analyzed using the nonparametric Wilcoxon paired test. The final sample included 17 subjects (4 females and 13 males; initial age, 12.3 ± 1.2 years). The results demonstrated a significant increase in Wits appraisal (mm), ANB (°), SNA (°), N perp-A (mm), Co-A (mm), Co-Gn (mm), AFAI (mm), molar relationship (mm), overjet (mm), U6-vertical Pt (mm), L1-NB (mm) and U1-L1 (°) (P 
doi_str_mv 10.1016/j.ajodo.2024.11.004
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The study showed that miniscrew-anchored maxillary protraction associated with facemasks and mandibular anchorage bars produces positive skeletal effects in adolescents while also favoring the control of dental effects. •We evaluated the dentoskeletal effects of Miniscrew-Anchored Maxillary Protraction with a mandibular anchorage bar and a night facemask.•Class III malocclusion was treated using hybrid hyrax and mandibular miniscrew anchorage.•Class III elastics connected the maxillary molars to mandibular miniscrews for protraction.•Significant improvements in Wits, ANB, SNA, Co-A, overjet, and other dentoskeletal parameters were observed.•Night facemask therapy showed favorable skeletal effects in adolescent patients.•Mandibular anchorage bar improved dental effects, particularly in the mandibular incisors.</description><identifier>ISSN: 0889-5406</identifier><identifier>ISSN: 1097-6752</identifier><identifier>EISSN: 1097-6752</identifier><identifier>DOI: 10.1016/j.ajodo.2024.11.004</identifier><identifier>PMID: 39708002</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><ispartof>American journal of orthodontics and dentofacial orthopedics, 2024-12</ispartof><rights>2024 American Association of Orthodontists</rights><rights>Copyright © 2024 American Association of Orthodontists. 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title Dentoskeletal effects of miniscrew-anchored maxillary protraction: Evaluating the role of mandibular anchorage bar and night facemask
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