Journal of Public Health

, Volume 24, Issue 5, pp 395–400 | Cite as

Oral conditions and trouble sleeping among preschool children

  • Raquel Gonçalves Vieira-Andrade
  • Genara Brum Gomes
  • Tássia Cristina de Almeida Pinto-Sarmento
  • Ramon Targino Firmino
  • Isabela Almeida Pordeus
  • Maria Letícia Ramos-Jorge
  • Saul Martins Paiva
  • Ana Flávia Granville-Garcia
Original Article



To investigate the association between oral conditions and trouble sleeping among preschool children.

Subject and methods

A population-based cross-sectional study was carried out with a representative sample of 837 children aged 3–5 years. Dental caries, traumatic dental injury (TDI) and malocclusion were determined through clinical examinations. The DMFT index and the classification proposed by Andreasen et al. (2007) were used to diagnose dental caries and TDI, respectively. Parents/caregivers answered a questionnaire about socioeconomic indicators, child’s oral health, child’s visits to the dentist and history of toothache. They were also questioned as to whether their children had trouble sleeping due to dental reasons (dependent variable). Descriptive analysis and hierarchically adjusted logistic regression models were used (p < 0.05, 95 % CI).


Trouble sleeping was significantly more prevalent among children whose parents/caregivers perceived their child’s oral health to be poor (PR = 2.81; 95 % CI:1.26–6.30), those who had been to the dentist (PR = 3.02; 95 % CI:1.53–6.00), those with a history of toothache (PR = 23.75; 95 % CI:8.00–70.60), those with high severity of caries (six or more cavitated lesions; PR = 3.13; 95 % CI:1.16–8.42) and those with malocclusion (PR = 2.31; 95 % CI:1.08–5.00). No association was found between trouble sleeping and TDI.


Parents/caregivers’ perception of poor oral health status in their children, history of visit to dentist, history of toothache as well as the severity of dental caries and malocclusion were associated with trouble sleeping in preschool children.


Child preschool Dental caries Malocclusion Sleep disorders Tooth injuries 



This study was supported by the State University of Paraíba (UEPB), the Brazilian Coordination of Higher Education, Ministry of Education (CAPES), the Research Foundation of the State of Minas Gerais (FAPEMIG) and the National Council for Scientific and Technological Development (CNPQ), Brazil

Compliance with ethical standards

Statement of ethics

This study received approval from the Human Research Ethics Committee of the State University of Paraiba (Brazil) with the protocol number 0046.0.133.000-11, in compliance to the provisions of the Declaration of Helsinki of 1975 (as revised in 2000). All parents/caregivers received information regarding the objectives of the study and signed an informed consent form.

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Raquel Gonçalves Vieira-Andrade
    • 1
  • Genara Brum Gomes
    • 1
  • Tássia Cristina de Almeida Pinto-Sarmento
    • 2
  • Ramon Targino Firmino
    • 1
  • Isabela Almeida Pordeus
    • 1
  • Maria Letícia Ramos-Jorge
    • 3
  • Saul Martins Paiva
    • 1
  • Ana Flávia Granville-Garcia
    • 3
  1. 1.Department of Paediatric Dentistry and Orthodontics, School of DentistryUniversidade Federal de Minas GeraisBelo HorizonteBrazil
  2. 2.Department of Dentistry, School of DentistryUniversidade Federal de Campina GrandePatosBrazil
  3. 3.Department of Dentistry, School of DentistryUniversidade Federal dos Vales do Jequitinhonha e Mucuri DiamantinaBrazil

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