Mandibular behavior in the treatment of skeletal class II malocclusion: a 5-year post-retention analysis
Braz. j. oral sci
; 8(4): 166-170, Oct.-Dec. 2009. ilus, tab
Article
em En
| LILACS, BBO
| ID: lil-578026
Biblioteca responsável:
BR28.1
ABSTRACT
Aim:
This study aimed to assess mandibular behavior in Class II subjects subjected to full orthodontic treatment with standard edgewise appliance and cervical headgear (Kloehn appliance) during the pubertal growth spurt period.Methods:
Lateral cephalometric radiographs of 40 patients (21 females and 19 males) were performed at the beginning of the treatment (T0), at its end (T1) and at 5-year post-retention phase (T2) in order to quantify the cephalometric measurements (8 angular and 3 linear), representing the mandibular behavior in the anteroposterior and vertical senses. The mean age of female patients at T0, T1 and T2 was 11.4, 15 and 26 years, respectively, and for male patients it was 12.2, 16.7 and 28 years, respectively. All patients were treated in just one phase without extractions and not associating Class II intermaxillary elastics.Results:
The effective treatment of skeletal Class II malocclusion with conventional Edgewise fixed appliance and Kloehn cervical headgear did not interfere in the direction and amount of mandibular growth as well as remodeling at it is inferior border, with no influence in anti-clockwise rotation of the mandible. Themandibular growth was also observed after the orthodontic treatment, suggesting that it is influenced bygenetic factors.Conclusion:
These observations may lead to the peculation that growing patients with skeletal Class II malocclusion and low mandibular plane are conducive to a good treatment and long-term stability.Palavras-chave
Texto completo:
1
Bases de dados:
LILACS
Assunto principal:
Aparelhos de Tração Extrabucal
/
Má Oclusão Classe II de Angle
/
Mandíbula
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adolescent
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Adult
/
Child
/
Female
/
Humans
Idioma:
En
Revista:
Braz. j. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil