Obstructive Sleep ApneaOSA-EndoPainNCT07581964
Effect of Sleep Apnea on Pain After Dental Treatment
An observational study of Obstructive Sleep Apnea and Postoperative Pain, run by Harran University at 1 site in Turkey (Türkiye).
Trial summary
This observational study aims to investigate the effects of sleep quality and systemic health status on pain levels following endodontic treatment in adult patients. The primary goal is to determine how obstructive sleep apnea and common systemic conditions (diabetes and hypertension) influence postoperative dental… Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Obstructive Sleep Apnea, Postoperative Pain, Hypertension Complicated With Type 2 Diabetes
- What is being tested?
- Standard Endodontic Treatment
- Type of treatment
- Surgery or procedure
- How many people
- 78 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Sep 2025to 30 Mar 2026
- 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 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: The study population consists of adult patients seeking endodontic treatment at the Harran University Faculty of Dentistry, Department of Endodontics. Participants are selected consecutively from individuals who have undergone polysomnography in an accredited sleep laboratory (for the OSA groups) and from patients with diagnosed systemic conditions such as diabetes and hypertension.
Who may be able to join
- Patients aged between 18 and 65 years.
- Clinical requirement for endodontic (root canal) treatment.
- Presence of a restorable tooth structure.
- Diagnosis of moderate (AHI 15-30) or severe (AHI > 30) obstructive sleep apnea (OSA) confirmed by polysomnography, for relevant groups.
- Patients with diagnosed systemic diseases (Diabetes Mellitus and/or Hypertension) or systemically healthy controls according to group allocation.
Who cannot join
- Presence of periapical lesions identified during preoperative radiographic evaluation.
- Chronic use of analgesics or long-term pain-management medications.
- Pregnancy.
- Failure to complete the established study protocol.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Harran University Faculty of Dentristry,Departman of Endodonti
Sanliurfa, Outside of the US, 63300
About this study
Official title: Relationship Between Obstructive Sleep Apnea and Postoperative Pain After Endodontic Treatment
This observational study aims to investigate the effects of sleep quality and systemic health status on pain levels following endodontic treatment in adult patients. The primary goal is to determine how obstructive sleep apnea and common systemic conditions (diabetes and hypertension) influence postoperative dental pain.
The key questions it aims to answer are:
Read more
Does the severity of Obstructive Sleep Apnea (OSA) lead to higher postoperative pain scores after root canal treatment?
How does the presence of systemic diseases, such as diabetes and hypertension, affect pain perception compared to healthy individuals and OSA patients?
Comparison Groups:
Researchers will compare outcomes across three distinct cohorts:
OSA Group: Patients diagnosed with moderate-to-severe obstructive sleep apnea via polysomnography.
Systemic Disease Group: Patients with diagnosed systemic conditions, specifically diabetes and hypertension.
Control Group: Systemically healthy individuals without sleep disorders.
Participants will:
Undergo a polysomnography (PSG) evaluation to assess their sleep status.
Receive routine, standard-of-care endodontic treatment.
Record and report their pain intensity using the Visual Analog Scale (VAS) at specific intervals after the procedure.
Read the detailed description
Study Design and Power Analysis This observational study was designed to evaluate the interaction between Obstructive Sleep Apnea (OSA) and systemic diseases on postoperative pain following endodontic treatment. A power analysis was performed using G*Power 3.1 software with parameters f=0.40, α=0.05, and 80% power. While the analysis indicated a minimum of 66 participants, a total of 75 participants were targeted to account for a potential 15% dropout rate. The study was completed with 78 participants, maintaining and enhancing the required statistical power.
Participant Selection and Grouping
Patients aged 28 to 63 were enrolled based on their clinical status and divided into three groups:
Group 1 (n=24): Patients diagnosed with moderate (AHI 15-30) or severe (AHI >30) OSA via polysomnography (PSG) in an accredited sleep laboratory, who also presented with systemic diseases (Diabetes Mellitus and/or Hypertension).
Group 2 (n=24): Patients with diagnosed systemic diseases (Diabetes Mellitus and/or Hypertension) but without OSA.
Group 3 (n=30): Systemically healthy individuals without OSA (Control Group).
Exclusion criteria included the presence of periapical lesions on preoperative radiographs, chronic analgesic use, pregnancy, and failure to complete the study protocol. To minimize bias, the research team was blinded to the OSA classification process, and the data analyst was blinded during the statistical evaluation.
Standardized Endodontic Protocol To eliminate operator variability, all treatments were performed by a single experienced endodontist in a single session. Procedures were conducted under local anesthesia (2% lidocaine with 1:80,000 epinephrine) and rubber dam isolation. Root canal preparation was standardized using the VDW.ROTATE™ system up to a size 25.06 taper. The irrigation protocol included 5.25% NaOCl, 17% EDTA, and a final rinse with distilled water. Canals were obturated using the single-cone gutta-percha technique with AH Plus sealer.
Evaluation and Statistical Analysis Preoperative pain levels and postoperative pain at the 6th hour, 24th hour, and 7th day were recorded using a 10-point Visual Analog Scale (VAS) (0: no pain, 10: severe pain). The primary outcome was the difference in postoperative VAS scores between groups, while the secondary outcome was the duration of pain. Statistical analysis was performed using SPSS version 25. Due to non-normal distribution (confirmed via Kolmogorov-Smirnov test), the Kruskal-Wallis test with Bonferroni correction and the Mann-Whitney U test were utilized. The significance level was set at p < 0.05.
- Conditions
- Obstructive Sleep Apnea, Postoperative Pain, Hypertension Complicated With Type 2 Diabetes
- Being tested
- Standard Endodontic Treatment
- Keywords
- Obstructive Sleep Apnea, Root Canal Therapy, Postoperative Pain
- Medical subject headings
- Sleep Apnea, Obstructive, Pain, Postoperative
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Standard Endodontic TreatmentProcedure or surgery
Standardized single-session root canal treatment performed under rubber dam isolation and local anesthesia. Root canals are prepared using the VDW.ROTATE™ rotary system, irrigated with 5.25% NaOCl and 17% EDTA, and obturated with the single-cone technique using AH Plus sealer.
| Study group | Role | What they receive |
|---|---|---|
| Grup 1 (OSA + Systemic Disease) | Patients diagnosed with moderate (AHI 15-30) or severe (AHI >30) Obstructive Sleep Apnea (OSA) via polysomnography, who also have systemic diseases such as Diabetes Mellitus and/or Hypertension. Receives: Procedure: Standard Endodontic Treatment | |
| Grup 2 (Systemic Disease Only) | Patients diagnosed with systemic diseases such as Diabetes Mellitus and/or Hypertension, but who do not have Obstructive Sleep Apnea. Receives: Procedure: Standard Endodontic Treatment | |
| Grup 3 (Control Group) | Systemically healthy individuals without any diagnosed systemic diseases or Obstructive Sleep Apnea. Receives: Procedure: Standard Endodontic Treatment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Postoperative Pain Intensity measured by Visual Analog Scale (VAS)
Pain intensity is self-reported by patients using a 10-point Visual Analog Scale (VAS), where 0 represents "no pain" and 10 represents "severe pain".
Measured: Preoperative (baseline), 6 hours, 24 hours, and 7 days after the endodontic treatment.
Secondary outcomes (1)
Preoperative Baseline Pain Level
Assessment of the participants' pain intensity before the start of the endodontic treatment using the 10-point Visual Analog Scale (VAS), where 0 represents "no pain" and 10 represents "severe pain". This measure is used to ensure baseline comparability between the groups.
Measured: Baseline (Preoperative)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 May 2026
- Study start15 Sep 2025
- Primary completion15 Mar 2026
- Study completion30 Mar 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Obstructive Sleep ApneaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 78 participants (actual)
Sponsor and investigators
- Lead sponsor
- Harran University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ahmet AKAY, Harran University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07581964
- Sponsor's protocol ID
- HRU/25.15.53
- Acronym
- OSA-EndoPain
- Status last verified
- May 2026
- First submitted
- 6 May 2026
- Last updated
- 12 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Individual participant data (IPD) that are completely de-identified will be shared. This includes demographic information (age and sex), Apnea-Hypopnea Index (AHI) values, systemic health status (diabetes and hypertension status), and preoperative and postoperative Visual Analog Scale (VAS) pain scores. No personally identifying information of the participants will be disclosed to protect patient privacy.
Study at a glance
From the registry record, last updated by the sponsor on 12 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Relationship Between Obstructive Sleep Apnea and Postoperative Pain After Endodontic Treatment
- ClinicalTrials.gov ID
- NCT07581964
- Acronym / sponsor ID
- OSA-EndoPain / HRU/25.15.53
- Conditions
- Obstructive Sleep Apnea, Postoperative Pain, Hypertension Complicated With Type 2 Diabetes
- Keywords
- Obstructive Sleep Apnea, Root Canal Therapy, Postoperative Pain
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 78 participants (actual)
- Lead sponsor
- Harran UniversityUniversity, hospital or other
- Study start
- 15 Sep 2025 (actual)
- Primary completion
- 15 Mar 2026 (actual)
- Study completion
- 30 Mar 2026 (actual)
- First posted
- 12 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This observational study aims to investigate the effects of sleep quality and systemic health status on pain levels following endodontic treatment in adult patients. The primary goal is to determine how obstructive sleep apnea and common systemic conditions (diabetes and hypertension) influence postoperative dental pain.
The key questions it aims to answer are:
Does the severity of Obstructive Sleep Apnea (OSA) lead to higher postoperative pain scores after root canal treatment?
How does the presence of systemic diseases, such as diabetes and hypertension, affect pain perception compared to healthy individuals and OSA patients?
Comparison Groups:
Researchers will compare outcomes across three distinct cohorts:
OSA Group: Patients diagnosed with moderate-to-severe obstructive sleep apnea via polysomnography.
Systemic Disease Group: Patients with diagnosed systemic conditions, specifically diabetes and hypertension.
Control Group: Systemically healthy individuals without sleep disorders.
Participants will:
Undergo a polysomnography (PSG) evaluation to assess their sleep status.
Receive routine, standard-of-care endodontic treatment.
Record and report their pain intensity using the Visual Analog Scale (VAS) at specific intervals after the procedure.
Detailed description
Study Design and Power Analysis This observational study was designed to evaluate the interaction between Obstructive Sleep Apnea (OSA) and systemic diseases on postoperative pain following endodontic treatment. A power analysis was performed using G*Power 3.1 software with parameters f=0.40, α=0.05, and 80% power. While the analysis indicated a minimum of 66 participants, a total of 75 participants were targeted to account for a potential 15% dropout rate. The study was completed with 78 participants, maintaining and enhancing the required statistical power.
Participant Selection and Grouping
Patients aged 28 to 63 were enrolled based on their clinical status and divided into three groups:
Group 1 (n=24): Patients diagnosed with moderate (AHI 15-30) or severe (AHI >30) OSA via polysomnography (PSG) in an accredited sleep laboratory, who also presented with systemic diseases (Diabetes Mellitus and/or Hypertension).
Group 2 (n=24): Patients with diagnosed systemic diseases (Diabetes Mellitus and/or Hypertension) but without OSA.
Group 3 (n=30): Systemically healthy individuals without OSA (Control Group).
Exclusion criteria included the presence of periapical lesions on preoperative radiographs, chronic analgesic use, pregnancy, and failure to complete the study protocol. To minimize bias, the research team was blinded to the OSA classification process, and the data analyst was blinded during the statistical evaluation.
Standardized Endodontic Protocol To eliminate operator variability, all treatments were performed by a single experienced endodontist in a single session. Procedures were conducted under local anesthesia (2% lidocaine with 1:80,000 epinephrine) and rubber dam isolation. Root canal preparation was standardized using the VDW.ROTATE™ system up to a size 25.06 taper. The irrigation protocol included 5.25% NaOCl, 17% EDTA, and a final rinse with distilled water. Canals were obturated using the single-cone gutta-percha technique with AH Plus sealer.
Evaluation and Statistical Analysis Preoperative pain levels and postoperative pain at the 6th hour, 24th hour, and 7th day were recorded using a 10-point Visual Analog Scale (VAS) (0: no pain, 10: severe pain). The primary outcome was the difference in postoperative VAS scores between groups, while the secondary outcome was the duration of pain. Statistical analysis was performed using SPSS version 25. Due to non-normal distribution (confirmed via Kolmogorov-Smirnov test), the Kruskal-Wallis test with Bonferroni correction and the Mann-Whitney U test were utilized. The significance level was set at p < 0.05.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Grup 1 (OSA + Systemic Disease) | – | Procedure: Standard Endodontic TreatmentPatients diagnosed with moderate (AHI 15-30) or severe (AHI >30) Obstructive Sleep Apnea (OSA) via polysomnography, who also have systemic diseases such as Diabetes Mellitus and/or Hypertension. |
| Grup 2 (Systemic Disease Only) | – | Procedure: Standard Endodontic TreatmentPatients diagnosed with systemic diseases such as Diabetes Mellitus and/or Hypertension, but who do not have Obstructive Sleep Apnea. |
| Grup 3 (Control Group) | – | Procedure: Standard Endodontic TreatmentSystemically healthy individuals without any diagnosed systemic diseases or Obstructive Sleep Apnea. |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- The study population consists of adult patients seeking endodontic treatment at the Harran University Faculty of Dentistry, Department of Endodontics. Participants are selected consecutively from individuals who have undergone polysomnography in an accredited sleep laboratory (for the OSA groups) and from patients with diagnosed systemic conditions such as diabetes and hypertension.
Key inclusion criteria (5 listed)
- Patients aged between 18 and 65 years.
- Clinical requirement for endodontic (root canal) treatment.
- Presence of a restorable tooth structure.
- Diagnosis of moderate (AHI 15-30) or severe (AHI > 30) obstructive sleep apnea (OSA) confirmed by polysomnography, for relevant groups.
- Patients with diagnosed systemic diseases (Diabetes Mellitus and/or Hypertension) or systemically healthy controls according to group allocation.
Key exclusion criteria (4 listed)
- Presence of periapical lesions identified during preoperative radiographic evaluation.
- Chronic use of analgesics or long-term pain-management medications.
- Pregnancy.
- Failure to complete the established study protocol.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Standard Endodontic TreatmentStandardized single-session root canal treatment performed under rubber dam isolation and local anesthesia. Root canals are prepared using the VDW.ROTATE™ rotary system, irrigated with 5.25% NaOCl and 17% EDTA, and obturated with the single-cone technique using AH Plus sealer. | Procedure or surgery | Grup 1 (OSA + Systemic Disease), Grup 2 (Systemic Disease Only), Grup 3 (Control Group) |
Primary outcome
Postoperative Pain Intensity measured by Visual Analog Scale (VAS)
Time frame: Preoperative (baseline), 6 hours, 24 hours, and 7 days after the endodontic treatment.
Pain intensity is self-reported by patients using a 10-point Visual Analog Scale (VAS), where 0 represents "no pain" and 10 represents "severe pain".
1 secondary outcome
Preoperative Baseline Pain Level
Time frame: Baseline (Preoperative)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 May 2026.
- Individual participant dataSharing planned: Yes. Individual participant data (IPD) that are completely de-identified will be shared. This includes demographic information (age and sex), Apnea-Hypopnea Index (AHI) values, systemic health status (diabetes and hypertension status), and preoperative and postoperative Visual Analog Scale (VAS) pain scores. No personally identifying information of the participants will be disclosed to protect patient privacy.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Obstructive Sleep Apnea and Postoperative Pain, run by Harran 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 5 inclusion and 4 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 12 May 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?
Postoperative Pain Intensity measured by Visual Analog Scale (VAS) (time frame: Preoperative (baseline), 6 hours, 24 hours, and 7 days after the endodontic treatment.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 12 May 2026.