Association Between Obstructive Sleep Apnea and Bruxism

Study Overview
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Brief Summary
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The objective of this retrospective observational study will be to investigate the between the Obstructive Sleep Apnea Syndrome (OSAS) and Sleep Bruxism (SB), in individuals diagnosed through polysomnography (PSG).

Detailed Description
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The SB and OSAS are sleep disorders with great importance for dentistry. The OSAS is characterized by partial or total obstruction of the upper airways. SB is defined as a repetitive activity of the mandibular musculature characterized by the tightening or grinding of the teeth and/or by the retrusion or propulsion of the mandible. This study retrospective observational will be evaluation to investigate the association between OSAS and SB. Data from PSG and medical records (n=640) will be collected from January 2012 to July 2018 at Instituto do Sono de Pelotas (ISP).

Official Title
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Association Between Obstructive Sleep Apnea and Bruxism: A Retrospective Study

Conditions
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Bruxism, Sleep, Obstructive Sleep Apnea

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adults (aged 20 to 60 years) and elderly (aged > 60 years) (WHO-World Health Organization, 2015) who was undergone PSG at the Instituto do Sono de Pelotas (ISP); Have completed all the respective PSG reports. Exclusion Criteria: •Those which the participants were unable to answer the questionnaires and who presented a history of epilepsy that could interfere in the results of PSG.

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Tabulation of polysomnographic report related to sleep efficiency | These data are provided from the medical report generated in the polysomnography examination in%. Values above 85% will be classified as good sleep efficiency, and values below 85% will be classified as poor sleep efficiency. These polysomnographic exams were performed at the Sleep Institute of Pelotas (ISP) from January 2012 to July 2018. | The deadline is until May 2020 to have all data collected | 
| Tabulation of polysomnographic report related to sleep bruxism | These data are provided from the medical report generated in the polysomnography examination in the presence or absence of sleep bruxism. These polysomnographic exams were performed at the Sleep Institute of Pelotas (ISP) from January 2012 to July 2018. | The deadline is until May 2020 to have all data collected | 
| Tabulation of polysomnographic report related to obstructive sleep apnea syndrome (SAOS) | OSAS is classified according to its severity, which varies according to the number of apnea and hypopnea indexes per hour (AHI), 15; moderate of 16-30, and recorded the first upper 31 episodes. These data are provided from the medical report generated in the polysomnography. These polysomnographic exams were performed at the Sleep Institute of Pelotas (ISP) from January 2012 to July 2018. | The deadline is until May 2020 to have all data collected | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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sleep bruxism, polisomnography