Prevalence and Associated Factors of Dental Trauma in Six-Year-Old School-Children


  • Breno Malinverni
  • Abelardo Nunes Lunardelli
  • Sandra Espíndola Lunardelli
  • Luiz Gustavo Teixeira Martins
  • Rodrigo Dias Nunes
  • Eliane Traebert
  • Jefferson Traebert


Epidemiology, Tooth Injuries, Tooth Fractures, Dentition, Mixed


Objective: To estimate the prevalence and associated factors of dental trauma in 6-year-old school children in the city of Palhoça, Brazil. Material and Methods: Cross-sectional study nested in a cohort study. It involved a representative sample of school children born in 2009, residing in the municipality and regularly enrolled in public and private schools (n = 1,102). Clinical data were obtained through oral exams. To evaluate the incisal overjet, the distance in millimeters was measured horizontally from the labial surface of the lower central incisor to the labial surface of the upper incisor. Bivariate analyses were performed using the Chi-square test, with a p-value <0.05 considered statistically significant. Multivariate analyses using Poisson Regression were performed to identify independent associations between the prevalence and the independent variables studied. Results: Prevalence of dental trauma was 4.2% (95% CI 3.0-5.4). Dental trauma was statistically associated with studying in a private school (PR = 1.03; 95% CI 1.01-1.06) (p=0.016) and with inadequate lip coverage (PR = 1.08; 95% CI 1.01-1.14) (p=0.016). Conclusion: The prevalence of 4.2% of dental trauma in six-year-old children, associated with inadequate and greater lip coverage in children from private schools should be taken into account, since most teeth at this stage are newly erupted.


World Health Organization. The World Oral Health Report 2003 WHO Global Oral Health Programme. Available from: [Accessed on March 20, 2019].

Brasil. Ministério da Saúde. SB Brasil 2010: Pesquisa Nacional de Saúde Bucal. Brasília: Ministério da Saúde, 2012. [In Portuguese]

Narvai PC, Frazão P, Roncalli AG, Antunes LF. Dental caries in Brazil: decline, polarization, inequality and social exclusion. Rev Panam Salud Publica 2006; 19(6):385-93.

Agnelli PB. Variation of brazilian CPOD index during the 1980 to 2010 period. Rev Bras Odontol 2015; 72(1/2):10-5.

Berti GO, Hesse D, Bonifácio CC, Raggio DP, Bonecker MJS. Epidemiological study of traumatic dental injuries in 5- to 6-year-old Brazilian children. Braz Oral Res 2015; 29(1):1-6.

Traebert J, Claudino D. Epidemiology of traumatic dental injuries in children: the brazilian scientific production. Pesqui Bras Odontopediatria Clin Integr 2012; 12(2):263-72.

Rodrigues AS, Castilho T, Azeredo LAA, Antunes LS. Epidemiological Profile of Dental Trauma in Children and Adolescents in Brazil. UNOPAR Cient Ciênc Biol Saúde 2015; 17 (4):267-78.

Glendor U. Epidemiology of traumatic dental injuries – a 12 year review of the literature. Dent Traumatol 2008; 24(6):603-11.

Diangelis AJ, Andreasen JO, Ebeleseder KA, Kenny DJ, Trope M, Sigurdsson A, et al. Guidelines for the management of traumatic dental injuries: 1. Fractures and luxations of permanent teeth. Pediatr Dent 2016; 38(6):358-68.

Mota LQ, Targino AGR, Lima MGGC, Farias JFG, Silva ALA, Farias FFG. Evaluation of dental trauma in schoolchildren of the city of João Pessoa, PB, Brazil. Pesqui Bras Odontopediatria Clin Integr 2011; 11(2):217-22.

Levin L, Zadik Y. Education on and prevention of dental trauma: It’s time to act! Dent Traumatol 2012; 28(1):49-54.

Corrêa-Faria P, Martins CC, Bönecker M, Paiva SM, Ramos-Jorge ML, Pordeus IA. Clinical factors and socio-demographic characteristics associated with dental trauma in children: a systematic review and meta-analysis. Dent Traumatol 2016; 32(5):367-78.

Instituto Brasileiro de Geografia e Estatística. Santa Catarina. Palhoça. Estimativa da população. 2015. Available from: [Accessed on September 20, 2015]. [In Portuguese]

Traebert J, Lunardelli SE, Martins LGT, Santos K, Nunes RD, Lunardelli AN, et al. Methodological description and preliminary results of a cohort study on the influence of the first 1000 days of life on the children ’s future health. Ann Brazilian Acad Sci 2018; 90(3):3105-14.

O’Brien M. Children’s dental health in United Kingdon 1993. Office of population censuses and surveys. London: Her Majesty’s Stationery Office, 1994.

Brasil. Ministério da Saúde. Controle de Infecções e a Prática Odontológica em Tempos de AIDS. Brasília: Ministério da Saúde, 2000. [In Portuguese]

World Health Organization. The Oral Health Report. Geneva: WHO, 1997.

Chen Y, Lee W, Ferretti GA, Slayton RL, Nelson S. Agreement between photographic and clinical examinations in detecting developmental defects of enamel in infants. Am Assoc Public Heal Dent 2013; 73(3):204-9.

Traebert J, Hemkemeier I, Lacerda JT. Traumatic injuries in permanent newly erupted teeth: prevalence and associated factors in schoolchildren of Tubarão, Brazil. Rev Odontol UNESP 2008; 37(4):363-9.

Ramos-Jorge ML, Peres MA, Traebert J, Ghisi CZ, de Paiva SM, Pordeus IA, et al. Incidence of dental trauma among adolescents: a prospective cohort study. Dent Traumatol 2008; 24(2):159-63.

Magno MB, Neves AB, Ferreira DM, Pithon MM, Maia LC. The relationship of previous dental trauma with new cases of dental trauma. A systematic review and meta-analysis. Dent Traumatol 2019; 35(1):3-14.

Goettems ML, Brancher LC, Costa CT, Bonow MLM, Romano AR. Does dental trauma in the primary dentition increases the likelihood of trauma in the permanent dentition? a longitudinal study. Clin Oral Investig 2017; 21(8):2415-20.

Traebert J, Peres MA, Blank V, Boell RS, Pietruza JA. Prevalence of traumatic dental injury and associated factors among 12-year-old school children in Florianopolis, Brazil. Dent Traumatol 2003; 19(1):15-8.

Paiva PCP, Paiva HN, Jorge KO, de Oliveira Filho PM. Cross-sectional study on treatment needs, etiology and occurrence of traumatic dental injuries among 12-yearold schoolchildren in Montes Claros, Brazil. Arq Odontol 2013; 49(1):19-25.

Traebert J, Facenda F, de Lacerda JT. Prevalence and treatment needs due to traumatic dental injuries in schoolchildren of Joaçaba, SC. Rev Fac Odontol Porto Alegre 2008; 12(3):10-2.

Alves MTG, Soares JF. School effectiveness research: methodological contributions to the Sociology of Education. Soc Estado 2007; 22(2):435-73.

Marcenes W, Zabot NE, Traebert J. Socio-economic correlates of traumatic injuries to the permanent incisors in schoolchildren aged 12 years in Blumenau, Brazil. Dent Traumatol 2001; 17(5):222-6.

Cortes MI, Marcenes W, Sheiham A. Prevalence and correlates of traumatic injuries to the permanent teeth of school-children aged 9–14 years in Belo Horizonte, Brazil. Dent Traumatol 2001; 17(1):22-6.

Grimm S, Frazão P, Antunes JL, Castellanos RA, Narvei PC. Dental injury among Brazilian schoolchildren in the state of São Paulo. Dent Traumatol 2004; 20(3):134-8.

Frujeri ML, Frujeri JA, Bezerra AC, Cortes MI, Costa Jr ED. Socio-economic indicators and predisposing factors associated with traumatic dental injuries in schoolchildren at Brasília, Brazil: a cross-sectional, population-based study. BMC Oral Health 2014; 14:91.

Zaleckiene V, Peciuliene V, Brukiene V, Drukteinis S. Traumatic dental injuries: etiology, prevalence and possible outcomes. Stomatologija 2014; 16(1):7-14.

Viegas CM, Paiva SM, Carvalho AC, Scarpelli AC, Ferreira FM, Pordeus IA. Influence of traumatic dental injury on quality of life of Brazilian preschool children and their families. Dent Traumatol 2014; 30(5):338-47.

Bastone EB, Freer TJ, McNamara JR. Epidemiology of dental trauma: a review of the literature. Aust Dent J 2000; 45(1):2-9.

Traebert J, Almeida ICS, Garghetti C, Marcenes W. Prevalence, treatment needs, and predisposing factors for traumatic injuries to permanent dentition in 11-13-year-old schoolchildren. Cad Saúde Pública 2004; 20(2):403-10.

Traebert J, Bittencourt DD, Peres KG, Peres MA, De Lacerda JT, Marcenes W. Aetiology and rates of treatment of traumatic dental injuries among 12-year-old school children in a town in southern Brazil. Dent Traumatol 2006; 22(4):173-8.

Petti S. Over two hundred million injuries to anterior teeth attributable to large overjet: a meta-analysis. Dent Traumatol 2015; 31(1):1-8.




How to Cite

Malinverni, B. ., Lunardelli, A. N. ., Lunardelli, S. E. ., Martins, L. G. T. ., Nunes, R. D. ., Traebert, E. ., & Traebert, J. (2021). Prevalence and Associated Factors of Dental Trauma in Six-Year-Old School-Children. Pesquisa Brasileira Em Odontopediatria E Clínica Integrada, 21, e0171. Retrieved from



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