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Stability and relapse of maxillary anterior crowding treatment in Class I and Class II Division 1 malocclusions

Quaglio, Camila Leite ; de Freitas, Karina Maria Salvatore ; de Freitas, Marcos Roberto ; Janson, Guilherme ; Henriques, José Fernando Castanha

American journal of orthodontics and dentofacial orthopedics, 2011-06, Vol.139 (6), p.768-774 [Periódico revisado por pares]

United States: Mosby, Inc

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Título:
Stability and relapse of maxillary anterior crowding treatment in Class I and Class II Division 1 malocclusions
Autor: Quaglio, Camila Leite ; de Freitas, Karina Maria Salvatore ; de Freitas, Marcos Roberto ; Janson, Guilherme ; Henriques, José Fernando Castanha
Assuntos: Adolescent ; Bicuspid - surgery ; Cephalometry ; Child ; Cuspid - pathology ; Dental Arch - pathology ; Dentistry ; Extraoral Traction Appliances ; Female ; Follow-Up Studies ; Humans ; Incisor - pathology ; Male ; Malocclusion, Angle Class I - pathology ; Malocclusion, Angle Class I - therapy ; Malocclusion, Angle Class II - pathology ; Malocclusion, Angle Class II - therapy ; Maxilla - pathology ; Orthodontic Anchorage Procedures ; Orthodontic Retainers ; Recurrence ; Retrospective Studies ; Serial Extraction ; Tooth Movement Techniques - instrumentation ; Treatment Outcome
É parte de: American journal of orthodontics and dentofacial orthopedics, 2011-06, Vol.139 (6), p.768-774
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Introduction The maxillary anterior teeth are the most important to facial esthetics because they are the first to show on a smile. Therefore, stability of the maxillary anterior teeth alignment is an important issue. The objective of this study was to compare the stability of maxillary anterior tooth alignment in Class I and Class II Division 1 malocclusions. Methods The sample comprised dental casts of 70 patients with Class I and Class II Division 1 malocclusions and a minimum of 3 mm of maxillary anterior crowding measured by an irregularity index. The patients were treated with extractions and evaluated at pretreatment and posttreatment and at least 5 years after treatment. The sample was divided into 3 groups: group 1, Class I malocclusion treated with 4 first premolar extractions comprising 30 subjects, with an initial age of 13.16 years and 8.59 mm of initial maxillary irregularity; group 2, Class II malocclusion treated with 4 first premolar extractions comprising 20 subjects, with an initial age of 12.95 years and 11.10 mm of maxillary irregularity; and group 3, Class II malocclusion treated with 2 first maxillary premolar extractions comprising 20 subjects, with an initial age of 13.09 years and 9.68 mm of maxillary irregularity. Results The decrease in the maxillary irregularity index was significantly greater in group 2 than in group 1 during treatment. The stability of maxillary anterior alignment was 88.12% over the long term; 77% of the linear displacement of the anatomic contact points tended to return to their original positions. Conclusions Stability of maxillary anterior alignment between the 3 groups was similar. The stability of maxillary anterior alignment was high over the long term, but a high percentage of teeth tended to return to their original positions.
Editor: United States: Mosby, Inc
Idioma: Inglês

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Stability and relapse of maxillary anterior crowding treatment in Class I and Class II Division 1 malocclusions

Quaglio, Camila Leite ; de Freitas, Karina Maria Salvatore ; de Freitas, Marcos Roberto ; Janson, Guilherme ; Henriques, José Fernando Castanha

United States: Mosby, Inc

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