Effect of orthognathic surgery on profile esthetics in Class II:1 malocclusions.
J Orofac Orthop
; 78(6): 472-479, 2017 Nov.
Article
em En
| MEDLINE
| ID: mdl-28660422
ABSTRACT
OBJECTIVES:
To measure the effect of orthognathic surgery on Class II1 profile silhouette esthetics and to identify pretreatment parameters and thresholds for consistent esthetic improvement.METHODS:
Pre- and posttreatment black profile silhouettes of 20 patients with Class II1 malocclusion who had received combined orthodontic/orthognathic treatment were evaluated retrospectively by 20 European orthodontists and laypeople each using a visual analogue scale (VAS). A variety of pretreatment skeletal and facial angles were measured cephalometrically and on the silhouette profiles. Descriptive statistics and Pearson's correlation coefficients were calculated.RESULTS:
The population showed a mean VAS improvement of 12.6%. VAS changes were significantly and directly related to pretreatment ANB in all evaluator groups (r = 0.48-0.59), whereas the interrelation with the degree of pretreatment profile convexity angle was less clear and statistically significant for the orthodontic evaluators only (r = -0.34 to -0.51). The highest correlation coefficients in all evaluator groups were seen for the relationship with pretreatment VAS scores (r = -0.64 to -0.73).CONCLUSION:
The lower the pretreatment VAS score and the profile convexity angles or the larger the pretreatment ANB angles were, the more the VAS improved. Pretreatment thresholds for consistent improvements were as follows VAS score < 20 mm, ANB > 8°, and profile angle ≤ 155°.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Ortodontia Corretiva
/
Cefalometria
/
Estética Dentária
/
Procedimentos Cirúrgicos Ortognáticos
/
Má Oclusão Classe II de Angle
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Humans
Idioma:
En
Revista:
J Orofac Orthop
Assunto da revista:
ODONTOLOGIA
/
ORTODONTIA
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Alemanha