The association between incisor trauma and occlusal characteristics in individuals 8-50 years of age

Dent Traumatol. 2004 Apr;20(2):67-74. doi: 10.1111/j.1600-4469.2004.00234.x.


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.

MeSH terms

  • Adolescent
  • Adult
  • Age Factors
  • Black People / statistics & numerical data
  • Child
  • Dental Health Surveys
  • Female
  • Humans
  • Incisor / injuries*
  • Logistic Models
  • Male
  • Malocclusion / complications*
  • Malocclusion / epidemiology
  • Mexican Americans / statistics & numerical data
  • Middle Aged
  • Odds Ratio
  • Prevalence
  • Risk Factors
  • Sex Factors
  • Tooth Injuries / complications
  • Tooth Injuries / epidemiology*
  • Tooth Injuries / ethnology
  • United States / epidemiology
  • White People / statistics & numerical data