title: The association between incisor trauma and occlusal characteristics in individuals 8-50 years of age.
abstract: To explore the association between incisal trauma and occlusal characteristics using oral examination and health interview data from the Third National Health and Nutrition Examination Survey 1988-1994 (NHANES III). Incisal trauma examinations were performed on 15 364 individuals 6-50 years of age using an ordinal scale developed by the National Institute of Dental and Craniofacial Research. Occlusal examinations were performed on 13 057 individuals 8-50 years of age. We fitted separate multivariate logistic regression models for maxillary and mandibular incisor trauma adjusting for socio-demographic variables (age, gender, race-ethnicity) and occlusal characteristics (overbite, overjet, open bite). 23.45% of all individuals evidenced trauma on at least one incisor, with trauma more than four times more prevalent on maxillary (22.59%) than on mandibular incisors (4.78%). Males (OR = 1.67) had greater odds of trauma than females; Whites (OR = 1.37) and non-Hispanic Blacks (OR = 1.37) had greater odds of trauma than Mexican-Americans. The odds of trauma increased with age, peaked from age 21 to 30 (OR = 2.92), and declined. As overjet increased, so did the odds of trauma. Compared to individuals with < or =0-mm overjet, odds of trauma increased from 1-3 mm (OR = 1.42) to 4-6 mm (OR = 2.42) to 7-8 mm (OR = 3.24) to >8 mm (OR = 12.47). Trauma to incisors is prevalent but mostly limited to enamel. Trauma to maxillary incisors is associated with overjet, gender, race-ethnicity, and age, while trauma to mandibular incisors is associated with gender, age, and overbite.
authors.affiliation: Department of Public Health Sciences, Baylor College of Dentistry, 3302 Gaston Avenue, Dallas, TX 75246, USA. jshulman@tambcd.edu
authors.forename: Jay D
authors.initials: JD
authors.lastname: Shulman
authors.forename: Jill
authors.initials: J
authors.lastname: Peterson
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D044383:Black People / Q000706:statistics & numerical data; D002648:Child; D003753:Dental Health Surveys; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries*; D016015:Logistic Models; D008297:Male; D008310:Malocclusion / Q000150:complications* / Q000453:epidemiology; D017058:Mexican Americans / Q000706:statistics & numerical data; D008875:Middle Aged; D016017:Odds Ratio; D015995:Prevalence; D012307:Risk Factors; D012737:Sex Factors; D018677:Tooth Injuries / Q000150:complications / Q000453:epidemiology* / Q000208:ethnology; D014481:United States / Q000453:epidemiology; D044465:White People / Q000706:statistics & numerical data; D001741:Black or African American