Prevalence of dental anomalies in various malocclusions

Introduction The purpose of this study was to evaluate the prevalence of dental anomalies in different orthodontic malocclusions. Methods Based on pretreatment diagnostic records, 900 orthodontic patients were classified as Class I (n = 358), Class II (n = 325), Class II Division 2 (n = 51), or Clas...

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Published in:American journal of orthodontics and dentofacial orthopedics 2009-03, Vol.135 (3), p.328-335
Main Authors: Uslu, Ozge, Akcam, M. Okan, Evirgen, Sehrazat, Cebeci, Ilker
Format: Article
Language:English
Subjects:
Adolescent
Age Factors
Anodontia - epidemiology
Biological and medical sciences
Child
Dens in Dente - epidemiology
Dental Enamel Hypoplasia - epidemiology
Dental Pulp Calcification - epidemiology
Dental Pulp Cavity - abnormalities
Dentistry
Facial bones, jaws, teeth, parodontium: diseases, semeiology
Female
Humans
Incidence
Male
Malocclusion - epidemiology
Malocclusion, Angle Class I - epidemiology
Malocclusion, Angle Class II - epidemiology
Malocclusion, Angle Class III - epidemiology
Medical sciences
Non tumoral diseases
Otorhinolaryngology. Stomatology
Prevalence
Sex Factors
Tooth Abnormalities - epidemiology
Tooth Crown - abnormalities
Tooth Eruption, Ectopic - epidemiology
Tooth Root - abnormalities
Tooth, Impacted - epidemiology
Tooth, Supernumerary - epidemiology
Turkey - epidemiology
Young Adult
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Summary:Introduction The purpose of this study was to evaluate the prevalence of dental anomalies in different orthodontic malocclusions. Methods Based on pretreatment diagnostic records, 900 orthodontic patients were classified as Class I (n = 358), Class II (n = 325), Class II Division 2 (n = 51), or Class III (n = 166). The occurrence rates of each dental anomaly were calculated as percentages of the total sample. Differences in incidence rates of each dental anomaly by sex and malocclusion were analyzed by using chi-square, Fisher exact, and z tests. The Mann-Whitney U test was used to determine whether there were significant differences in the occurrence of dental anomalies by age. Results It was found that 40.3% of patients (n = 363) had at least 1 dental anomaly. Agenesis was the most common (21.6%), followed by dens evaginatus (6.2%), invaginatus (5.0%), pulp stones (4.2%), and impaction (2.9%). No statistically significant correlations were found between dental anomaly and type of malocclusion, with the exception of impaction and short or blunt roots ( P
ISSN:0889-5406
1097-6752
DOI:10.1016/j.ajodo.2007.03.030