Fourth molar: A retrospective study and literature review of a rare clinical entity
Imaging Science in Dentistry
;
: 27-34, 2019.
Artículo
en Inglés
| WPRIM
| ID: wpr-740403
ABSTRACT
PURPOSE:
The prevalence of supernumerary teeth has been reported to be between 0.1% and 3.8%. The aim of this study was to determine the prevalence, clinical significance, and associated pathologies of fourth molars based on a retrospective study and a literature review. MATERIALS ANDMETHODS:
A 5-year retrospective prevalence study was conducted at the Department of Oral Diagnosis and Dentomaxillofacial Radiology of Okayama University Hospital, Okayama, Japan. The study involved extracting data from the digital records of patients from January 1, 2013 through December 31, 2017. The sampling frame included all patients who had panoramic radiographs, cone-beam computed tomography (CT), and multislice CT images during the period under review.RESULTS:
A total of 26,721 cases were reviewed and 87 fourth molars were identified. The prevalence of fourth molars in the 5-year study at Okayama was calculated as 0.32%. The mean age of patients with a fourth molar was 30.43 years, and the male-to-female ratio was 10.98. The vast majority of cases were in the maxilla (92%) and had normal shapes (89.7%); furthermore, 82.8% of cases were unerupted.CONCLUSION:
The prevalence of fourth molars in the study population was found to be 0.32%, and fourth molars occurred with approximately equal frequency in males and females. Fourth molars were more common in the maxilla and were predominantly unerupted and small.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Patología
/
Diente Supernumerario
/
Quistes Odontogénicos
/
Odontoma
/
Prevalencia
/
Estudios Transversales
/
Estudios Retrospectivos
/
Diagnóstico Bucal
/
Tomografía Computarizada de Haz Cónico
/
Japón
Tipo de estudio:
Estudio diagnóstico
/
Estudio observacional
/
Estudio de prevalencia
/
Factores de riesgo
Límite:
Femenino
/
Humanos
/
Masculino
País/Región como asunto:
Asia
Idioma:
Inglés
Revista:
Imaging Science in Dentistry
Año:
2019
Tipo del documento:
Artículo
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