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- Title
Long term dental transversal stability of Class II division 1 treated with cervical headgear.
- Authors
Bastos de OLIVEIRA, Márcio; Nunes dos SANTOS, Jean; Mascarenhas LIMA, Vanessa; Lima da FONTE, Tiago Fonseca; Martins de ARAUJO, Telma; Jorge VOGEL, Carlos; Braga RÊGO, Emanuel
- Abstract
Introduction: In several conditions, outcome stability is a great challenge for Orthodontics. Previous studies have reported that relapse commonly occurs along the years after orthodontic treatment finishing. Objective: The aim of the present study was to evaluate in the longterm transversal dental arch changes of Class II division 1 patients treated with cervical headgear and fixed appliance. Methods: Plaster study casts of 20 patients treated with cervical headgear without dental extractions were 3D-scanned and evaluated in three distinct times: initial (T1), immediate post-treatment (T2) and long-term retention (T3 minimum 20 years). Transversal teeth distance of maxillary and mandibular canines, premolars and first molars were measured. Results: A statistically significant increase during treatment was observed for all maxillary teeth transversal distances (p < 0.05). In turn, a significant reduction was observed in the long term (p < 0.05). For the mandibular teeth, canine transversal distance presented statistically significant constriction in the retention period (p < 0.05). Mandibular first molars distance was significantly expanded by treatment (p < 0.05) and remained stable in the long term. The changes observed for the other teeth or other times were considered not statistically relevant. Conclusions: For the accessed sample, transversal changes occurred during treatment and retention phases in Class II division 1 patients treated with cervical headgear and fixed appliance. Relapse was considered statistically relevant, even with the institution of a retention protocol.
- Subjects
MALOCCLUSION; TRANSVERSAL lines; HEADGEAR; TOOTH loss; DENTAL arch
- Publication
Dental Press Journal of Orthodontics, 2022, Vol 27, Issue 2, p1
- ISSN
2176-9451
- Publication type
Article
- DOI
10.1590/2177-6709.27.2.e2220291.oar