Prevalence of mesiodens in orthodontic patients with deciduous and mixed dentition and its association with other dental anomalies

• Published in: Dental press journal of orthodontics 2013-12, Vol.18 (6), p.93-99
• Main Authors: Lara, Tulio Silva, Lancia, Melissa, da Silva Filho, Omar Gabriel, Garib, Daniela Gamba, Ozawa, Terumi Okada
• Format: Article
• Language: English
• Subjects: Adolescent; Anodontia - epidemiology; Brazil - epidemiology; Child; Child, Preschool; Criança; Dente supranumerário; Dentistry; DENTISTRY, ORAL SURGERY & MEDICINE; Dentition, Mixed; Diastema - epidemiology; Female; Humans; Incisor - abnormalities; Incisor - pathology; Male; Prevalence; Prevalência; Radiography, Panoramic - statistics & numerical data; Retrospective Studies; Sex Factors; Tooth Abnormalities - epidemiology; Tooth Eruption; Tooth Extraction - statistics & numerical data; Tooth, Deciduous - abnormalities; Tooth, Supernumerary - epidemiology; Tooth, Unerupted - epidemiology
• ISSN: 2176-9451; 2177-6709; 2177-6709; 2176-9451
• DOI: 10.1590/S2176-94512013000600014

To determine the prevalence of mesiodens in deciduous and mixed dentitions and its association with other dental anomalies. Panoramic radiographs of 1,995 orthodontic patients were analyzed retrospectively, obtaining a final sample of 30 patients with mesiodens. The following aspects were analyzed: gender; number of mesiodens; proportion between erupted and non-erupted mesiodens; initial position of the supernumerary tooth; related complications; treatment plan accomplished; and associated dental anomalies. The frequency of dental anomalies in the sample was compared to reference values for the general population using the chi-square test, with a significance level set at 5%. The prevalence of mesiodens was 1.5% more common among males (1.5:1). Most of the mesiodens were non-erupted (75%) and in a vertical position, facing the oral cavity. Extraction of the mesiodens was the most common treatment. The main complications associated with mesiodens were: delayed eruption of permanent incisors (34.28%) and midline diastema (28.57%). From all the dental anomalies analyzed, only the prevalence of maxillary lateral incisor agenesis was higher in comparison to the general population. There was a low prevalence of mesiodens (1.5%) in deciduous and mixed dentition and the condition was not associated with other dental anomalies, except for the maxillary lateral incisor agenesis.