AzTrials
AzTrials

Sleep QualityNCT07921706

Sleep Quality Among Dentists

An observational study of Sleep Quality and Dentistry, run by TC Erciyes University at 1 site in Turkey (Türkiye).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This cross-sectional observational study evaluates sleep quality and associated factors among 147 dentists working in university, public, and private healthcare settings in Türkiye. Data were collected using a Personal Information Form and the Pittsburgh Sleep Quality Index (PSQI). Read more about this study

Who is it for?
Ages 18 to 60 yearsHealthy volunteers can take part
Conditions the study is for
Sleep Quality, Dentistry
How many people
147 participants
Where
1 siteTurkey (Türkiye)
Study dates
2 May 2024to 22 Dec 2025
How long will I take part?
1 Month
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 60 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Study population: Licensed dentists actively practicing their profession in three different dental settings (university hospitals, public oral and dental health centers, and private dental clinics) in Türkiye's Kayseri province.

Who may be able to join

  • Active status as a licensed dentist working in one of the three designated healthcare sectors (university hospital, public oral and dental health center, or private dental clinic).
  • Voluntarily agreed to participate in the study by signing the informed consent form.

Who cannot join

  • Regular use of any medication or dietary supplement with sleep-enhancing or sleep-regulating side effects.
  • Having a child under the age of 2 years.

Trial locations and contacts

1 site in 1 country.

Turkey (Türkiye)1 site

  • Erciyes University

    Kayseri, Kayseri, 38030

Other trials in Turkey (Türkiye)

About this study

Official title: Sleep Quality Among Dentists: Associations With Practice Setting and Lifestyle

This cross-sectional observational study evaluates sleep quality and associated factors among 147 dentists working in university, public, and private healthcare settings in Türkiye. Data were collected using a Personal Information Form and the Pittsburgh Sleep Quality Index (PSQI). The study aims to determine the prevalence of poor sleep quality and examine its associations with practice setting, sociodemographic characteristics, occupational factors, and lifestyle behaviors using multivariable logistic regression.

Read the detailed description

Sleep quality is relevant to cognitive performance, fine motor control, and clinical decision-making in dentistry. This cross-sectional observational study was conducted between May 2024 and January 2025 among 147 dentists working in university, public, and private healthcare settings in Türkiye.

Data were collected using a structured 15-item Personal Information Form and the validated Turkish version of the Pittsburgh Sleep Quality Index (PSQI). The Personal Information Form collected information on sociodemographic characteristics, working hours, graduation year, specialist status, smoking, and daily caffeine intake calculated in milligrams.

Sleep quality was assessed using the PSQI global score. Scores greater than 5 were classified as poor sleep quality, and scores of 5 or lower were classified as good sleep quality. Binary logistic regression analyses using the enter and backward Wald methods were used to examine associations between poor sleep quality and practice setting, sociodemographic characteristics, occupational factors, and lifestyle behaviors while adjusting for other variables included in the models.

Keywords
dentists sleep quality Pittsburgh Sleep Quality Index caffeine occupational health practice setting
Medical subject headings
Sleep Initiation and Maintenance Disorders

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pittsburgh Sleep Quality Index (PSQI) Score / Prevalence of Poor Sleep Quality

    Evaluation of sleep quality among dentists using the Pittsburgh Sleep Quality Index (PSQI), where a global score > 5 indicates poor sleep quality, assessed across university, public, and private healthcare sectors.

    Measured: Assessment of sleep quality over a 1-month period

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Nov 2026
  2. Study start2 May 2024
  3. Primary completion10 Jan 2025
  4. Study completion22 Dec 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Other
Time perspective
Cross-sectional
Enrolment
147 participants (actual)
Target duration
1 Month
IDs, dates and publications
ClinicalTrials.gov ID
NCT07921706
Sponsor's protocol ID
2023/485
Status last verified
Nov 2026
First submitted
9 Oct 2026
Last updated
6 Nov 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Hanks S, Cotton D, Spowart L. Leadership in Dental Practice: a Three Stage Systematic Review and Narrative Synthesis. J Dent. 2020 Nov;102:103480. doi: 10.1016/j.jdent.2020.103480. Epub 2020 Sep 19.

    PubMed 32961259

  • Carpi M. The Pittsburgh Sleep Quality Index: a brief review. Occup Med (Lond). 2025 Apr 4;75(1):14-15. doi: 10.1093/occmed/kqae121. No abstract available.

    PubMed 40190123

  • Gardiner C, Weakley J, Burke LM, Roach GD, Sargent C, Maniar N, Townshend A, Halson SL. The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. Sleep Med Rev. 2023 Jun;69:101764. doi: 10.1016/j.smrv.2023.101764. Epub 2023 Feb 6.

    PubMed 36870101

  • Reichert CF, Deboer T, Landolt HP. Adenosine, caffeine, and sleep-wake regulation: state of the science and perspectives. J Sleep Res. 2022 Aug;31(4):e13597. doi: 10.1111/jsr.13597. Epub 2022 May 16.

    PubMed 35575450

  • Song KW, Choi WS, Jee HJ, Yuh CS, Kim YK, Kim L, Lee HJ, Cho CH. Correlation of occupational stress with depression, anxiety, and sleep in Korean dentists: cross-sectional study. BMC Psychiatry. 2017 Dec 12;17(1):398. doi: 10.1186/s12888-017-1568-8.

    PubMed 29233107

  • Yilmaz M, Kirac Y, Sahin MK. Sleep quality and related factors in a sample of Turkish healthcare workers during the COVID-19 pandemic: A cross-sectional study. Int J Clin Pract. 2021 Nov;75(11):e14813. doi: 10.1111/ijcp.14813. Epub 2021 Sep 12.

    PubMed 34486780

  • Buysse DJ, Reynolds CF 3rd, Monk TH, Berman SR, Kupfer DJ. The Pittsburgh Sleep Quality Index: a new instrument for psychiatric practice and research. Psychiatry Res. 1989 May;28(2):193-213. doi: 10.1016/0165-1781(89)90047-4.

    PubMed 2748771

  • Marklund S, Mienna CS, Wahlstrom J, Englund E, Wiesinger B. Work ability and productivity among dentists: associations with musculoskeletal pain, stress, and sleep. Int Arch Occup Environ Health. 2020 Feb;93(2):271-278. doi: 10.1007/s00420-019-01478-5. Epub 2019 Oct 25.

    PubMed 31654126

  • Mollayeva T, Thurairajah P, Burton K, Mollayeva S, Shapiro CM, Colantonio A. The Pittsburgh sleep quality index as a screening tool for sleep dysfunction in clinical and non-clinical samples: A systematic review and meta-analysis. Sleep Med Rev. 2016 Feb;25:52-73. doi: 10.1016/j.smrv.2015.01.009. Epub 2015 Feb 17.

    PubMed 26163057

  • Song KW, Kim HK. Job stress and its related factors among Korean dentists: An online survey study. Int Dent J. 2019 Dec;69(6):436-444. doi: 10.1111/idj.12513. Epub 2019 Aug 6.

    PubMed 31388997

  • Scullin MK, Bliwise DL. Sleep, cognition, and normal aging: integrating a half century of multidisciplinary research. Perspect Psychol Sci. 2015 Jan;10(1):97-137. doi: 10.1177/1745691614556680.

    PubMed 25620997

  • Li J, Vitiello MV, Gooneratne NS. Sleep in Normal Aging. Sleep Med Clin. 2018 Mar;13(1):1-11. doi: 10.1016/j.jsmc.2017.09.001. Epub 2017 Nov 21.

    PubMed 29412976

  • Ohayon MM, Carskadon MA, Guilleminault C, Vitiello MV. Meta-analysis of quantitative sleep parameters from childhood to old age in healthy individuals: developing normative sleep values across the human lifespan. Sleep. 2004 Nov 1;27(7):1255-73. doi: 10.1093/sleep/27.7.1255.

    PubMed 15586779

  • Snel J, Lorist MM. Effects of caffeine on sleep and cognition. Prog Brain Res. 2011;190:105-17. doi: 10.1016/B978-0-444-53817-8.00006-2.

    PubMed 21531247

  • Penolazzi B, Natale V, Leone L, Russo PM. Individual differences affecting caffeine intake. Analysis of consumption behaviours for different times of day and caffeine sources. Appetite. 2012 Jun;58(3):971-7. doi: 10.1016/j.appet.2012.02.001. Epub 2012 Feb 9.

    PubMed 22326679

Questions about this trial

What is this clinical trial studying?

An observational study of Sleep Quality and Dentistry, run by TC Erciyes University at 1 site in Turkey (Türkiye).

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 6 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pittsburgh Sleep Quality Index (PSQI) Score / Prevalence of Poor Sleep Quality (time frame: Assessment of sleep quality over a 1-month period). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07921706, which also lists 17 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Nov 2026.

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