Effect of Rapid Maxillary Expansion on Condyle-fossa Relationship in Growing Patients.
J Contemp Dent Pract
; 19(10): 1189-1198, 2018 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-30498173
ABSTRACT
AIM:
This study tests whether rapid maxillary expansion (RME) exerts long term effects on interglenoid fossa distance and condyle fossa relationship. MATERIALS ANDMETHODS:
Consecutive growing patients aged 8 to 13 years were allocated either to the RME group or control group. Cone-beam computed tomography was performed at baseline and at 6 months. Specific software was used to determine fixed landmarks. Multivariate Analysis of Covariance (MANCOVA) models were used, with time by group interaction, using age as a covariate.RESULTS:
Twenty-seven patients with a mean age of 11.4 ± 1.5 years were included. There was an overall significant group by time interaction (p = 0.012, effect size 0.59). Change in the lateral position of the glenoid fossa, the primary outcome, was reached (p = 0.008, effect size 0.258). Change in the laterolateral position of the center of the condyle, and the co-primary outcome was also significant (p = 0.011, effect size = 0.24). Nasal cavity width increased (p = 0.065, effect size = 0.14). There was an initial asymmetry in the horizontal position of the condyles that was carried on with no effect of RME.CONCLUSION:
Rapid maxillary expansion (RME) produces a significant increase in the interglenoid fossa distance and displacement of the mandibular condyles at 6 months in growing patients compared to a control group. CLINICALSIGNIFICANCE:
The current study shows that RME is effective during growth, widening the interglenoid fossa distance and the lateral positions of the condyles and eventually enlarging the nasal cavity, without causing asymmetry.Palavras-chave
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças Maxilares
/
Técnica de Expansão Palatina
/
Cavidade Glenoide
/
Côndilo Mandibular
/
Maxila
Tipo de estudo:
Prognostic_studies
Limite:
Adolescent
/
Child
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Contemp Dent Pract
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2018
Tipo de documento:
Article