Different manifestations of class II division 2 incisor retroclination and their association with dental anomalies.
J Orthod
; 40(4): 299-306, 2013 Dec.
Article
em En
| MEDLINE
| ID: mdl-24297961
ABSTRACT
OBJECTIVE:
To investigate whether there is an association between dental developmental anomalies (DDAs) and different manifestations of class II division 2 (CII/2) malocclusion incisor retroclination.DESIGN:
Retrospective comparative study.SETTING:
Private orthodontic practice in the regions of Lisbon and Porto, Portugal. SUBJECTS ANDMETHODS:
The sample comprised 115 CII/2 malocclusions distributed into two groups on the basis of incisor retroclination Group I composed of 48 CII/2 with retroclination exclusively of both maxillary central incisors; Group II composed of 67 CII/2 with retroclination of all four maxillary incisors. Using the initial orthodontic records, it was determined for each patient the presence of the following DDAs tooth impaction, tooth agenesis, maxillary lateral incisor microdontia, tooth transpositions and supernumerary teeth.RESULTS:
Fifty-five per cent of patients were diagnosed with at least one of the DDAs studied. In the total sample the prevalence rates were 20.0% of palatal maxillary canine impaction, 27.4% of third molar agenesis, and 15.7% of maxillary lateral incisor microdontia. No patient exhibited any transposition or supernumerary teeth. The distribution of the DDAs studied by groups revealed a strong association of palatal canine impaction, tooth agenesis and maxillary lateral incisor microdontia with Group II but not with Group I.CONCLUSION:
The association of DDAs with CII/2 malocclusion is not common to all types of maxillary incisor retroclination, suggesting different etiologic factors among the different manifestations of CII/2 incisor retroclination.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Anormalidades Dentárias
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Incisivo
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Má Oclusão Classe II de Angle
Tipo de estudo:
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Limite:
Adolescent
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Adult
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Child
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Female
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Humans
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Male
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Middle aged
País como assunto:
Europa
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article