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Complex clinical case with Class III and open bite: stability after seven years

ABSTRACT A healthy 15-year-old boy with anterior open bite, edge-to-edge transverse discrepancy, and Class III skeletal relationship sought a nonsurgical orthodontic treatment. The patient was treated with premolars extraction, a Hyrax expander and intrusion mechanics with vertical elastics. This me...

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Published in:Dental press journal of orthodontics 2020-03, Vol.25 (2), p.32-43
Main Authors: Almeida, Rhita Cristina Cunha, Nunes, Livia Kelly Ferraz, Vieira, Ingrid Balbino Sousa Coelho, Carvalho, Felipe de Assis Ribeiro, Almeida, Marco Antonio de Oliveira
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description ABSTRACT A healthy 15-year-old boy with anterior open bite, edge-to-edge transverse discrepancy, and Class III skeletal relationship sought a nonsurgical orthodontic treatment. The patient was treated with premolars extraction, a Hyrax expander and intrusion mechanics with vertical elastics. This mechanics allowed for excellent facial and occlusal results. The final occlusion presented Class I molar and canine relationships, ideal overjet and overbite, and straight facial profile. Analysis of the posttreatment and follow-up radiographs showed that the treatment outcomes remained stable seven years after active orthodontic treatment. Thus, although combined orthodontic and surgical treatment should be considered for patients with this skeletal malocclusion, this case report proves that well controlled orthodontic movement with the patient’s cooperation can be a valid alternative treatment, with good and stable outcomes for patients who refuse surgery. RESUMO Paciente saudável, 15 anos de idade, com mordida aberta anterior, discrepância transversa e relação esquelética de Classe III, buscando tratamento ortodôntico não cirúrgico. O paciente foi tratado com extração de pré-molares associada a expansor Hyrax e mecânica de intrusão com elásticos verticais. Essa mecânica permitiu excelentes resultados faciais e oclusais. A oclusão final apresentou relação de molares e caninos em Classe I, sobremordida e sobressaliência ideais e perfil facial reto. A análise das radiografias pós-tratamento e o acompanhamento demonstraram que os resultados alcançados permaneceram estáveis sete anos após o tratamento ortodôntico ativo. Assim, embora o tratamento ortodôntico-cirúrgico combinado deva ser levado em consideração para pacientes com essa má oclusão esquelética, o presente relato de caso demonstrou que a movimentação ortodôntica bem controlada e com a colaboração do paciente se torna uma alternativa boa e estável para pacientes que recusam a cirurgia.
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O paciente foi tratado com extração de pré-molares associada a expansor Hyrax e mecânica de intrusão com elásticos verticais. Essa mecânica permitiu excelentes resultados faciais e oclusais. A oclusão final apresentou relação de molares e caninos em Classe I, sobremordida e sobressaliência ideais e perfil facial reto. A análise das radiografias pós-tratamento e o acompanhamento demonstraram que os resultados alcançados permaneceram estáveis sete anos após o tratamento ortodôntico ativo. 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Thus, although combined orthodontic and surgical treatment should be considered for patients with this skeletal malocclusion, this case report proves that well controlled orthodontic movement with the patient’s cooperation can be a valid alternative treatment, with good and stable outcomes for patients who refuse surgery. RESUMO Paciente saudável, 15 anos de idade, com mordida aberta anterior, discrepância transversa e relação esquelética de Classe III, buscando tratamento ortodôntico não cirúrgico. O paciente foi tratado com extração de pré-molares associada a expansor Hyrax e mecânica de intrusão com elásticos verticais. Essa mecânica permitiu excelentes resultados faciais e oclusais. A oclusão final apresentou relação de molares e caninos em Classe I, sobremordida e sobressaliência ideais e perfil facial reto. A análise das radiografias pós-tratamento e o acompanhamento demonstraram que os resultados alcançados permaneceram estáveis sete anos após o tratamento ortodôntico ativo. 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subjects Airway management
Case reports
class iii
Dental occlusion
Dentistry
DENTISTRY, ORAL SURGERY & MEDICINE
Mechanics
open bite
Original
Orthodontics
stability
Teenagers
Teeth
title Complex clinical case with Class III and open bite: stability after seven years
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