Clinical Oral Investigations

, Volume 23, Issue 1, pp 245–251 | Cite as

Association of sleep bruxism with oral health-related quality of life and sleep quality

  • Mariana Barbosa Câmara-Souza
  • Olívia Maria Costa de Figueredo
  • Renata Cunha Matheus Rodrigues GarciaEmail author
Original Article



To compare the oral health-related quality of life (OHRQoL) and sleep quality of subjects with and without sleep bruxism (SB).

Materials and methods

Participants of both genders were assigned as bruxers (n = 30, age 21–45 years) and non-bruxers (n = 30, age 24–40 years). SB was clinically diagnosed and confirmed with an electromyography/electrocardiograph portable device (Bruxoff). The OHRQoL was assessed using the Oral Health Impact Profile (OHIP-14). The sleep quality was determined using the Pittsburg Sleep Quality Index (PSQI) and Epworth Sleepiness Scale (ESS) questionnaires. OHIP-14, PSQI, and ESS data were analyzed by one-way ANOVA, considering a significance level of 5%.


Bruxers had worse OHRQoL (mean = 16.43) than controls (mean = 4.1), with an effect size (ES) of 1.58. Moreover, SB volunteers showed the highest PSQI scores (mean = 7.07; ES = 0.82) and excessive daytime sleepiness (mean = 10.33; ES = 0.65), compared to non-bruxers (means = 4.7 and 7.8, respectively).


SB may be associated with a negative impact on OHRQoL and sleep quality.

Clinical relevance

Determining that SB may have a marked role in OHRQoL and sleep quality is important for dental professionals establish proper multifactorial management, and understand patient-related psychosocial aspects.


Sleep bruxism Quality of life Sleep 



This study was supported by the São Paulo Research Foundation (FAPESP, grant numbers 2015/14662-0 and 2015/21704-1), Brazil.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures in this research were performed in accordance with the ethical standards of the Ethics Committee of Piracicaba dental School, University of Campinas, and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Mariana Barbosa Câmara-Souza
    • 1
  • Olívia Maria Costa de Figueredo
    • 1
  • Renata Cunha Matheus Rodrigues Garcia
    • 2
    Email author
  1. 1.Department of Prosthodontics and Periodontology, Piracicaba Dental SchoolUniversity of CampinasPiracicabaBrazil
  2. 2.Department of Prosthodontics and Periodontology, Piracicaba Dental SchoolUniversity of CampinasPiracicabaBrazil

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