Prevalence and associated factors of traumatic dental injuries in Brazilian schoolchildren.
OBJECTIVE
This study investigated the prevalence of traumatic dental injury (TDI) and associated factors in the permanent incisors of Brazilian schoolchildren.


METHODS
A cross-sectional survey was carried out with 1,612 male and female children aged 11 to 14 attending public and private elementary schools in Belo Horizonte, Brazil. A multistage sampling technique was adopted to select the children. Oral examinations were performed by calibrated examiners for the diagnosis of TDI (criteria proposed by Andreasen) and dental caries [Decayed, Missing and Filled Teeth Index (DMFT)]. The Social Vulnerability Index was used for socioeconomic classification. Data analysis involved descriptive statistics and the Poisson regression model.


RESULTS
The prevalence of TDI was 17.1%. Falls (43.6%) were the most common cause of TDI, mainly at home (41.8%). Boys were more affected than girls. There was no statistically significant association between TDI and socioeconomic status. The adjusted results revealed that TDI was significantly associated with DMFT [1.11, 95% confidence interval (CI): 1.06 to 1.16] and overjet (1.15, 95% CI: 1.00 to 1.31).


CONCLUSIONS
TDI was associated with dental caries and overjet and was not influenced by socioeconomic status.
Bendo
Cristiane B
CB
Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil. crysbendo@yahoo.com.br
Paiva
Saul M
SM
Oliveira
Ana C
AC
Goursand
Daniela
D
Torres
Cíntia S
CS
Pordeus
Isabela A
IA
Vale
Miriam P
MP
D000058:Accidental Falls / Q000706:statistics & numerical data; D000293:Adolescent; D001265:Athletic Injuries / Q000453:epidemiology; D001938:Brazil / Q000453:epidemiology; D002648:Child; D003430:Cross-Sectional Studies; D004245:DMF Index; D003731:Dental Caries / Q000150:complications / Q000453:epidemiology; D005260:Female; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008297:Male; D057887:Overbite / Q000150:complications / Q000453:epidemiology; D015995:Prevalence; D012044:Regression Analysis; D012744:Sex Ratio; D012923:Social Class; D018677:Tooth Injuries / Q000150:complications / Q000453:epidemiology*; D035862:Vulnerable Populations