AnxietyNCT06452836
Colors, Can They Reduce the Dental Anxiety
A study testing Green color exposure, Red color exposure and Blue color exposure in people with Anxiety and Anxiety State, run by Selcuk University at 1 site in Turkey (Türkiye).
Trial summary
The investigator's aim in this study was to evaluate the preoperative anxiety and pain felt during the operation due to exposure to green, red, and blue light. For this purpose, the participants will wear colored glasses before the operation. Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Anxiety, Anxiety State, Tooth Extraction Status Nos
- What is being tested?
- Green color exposure, Red color exposure and Blue color exposure
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 84 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Feb 2024to 1 Dec 2025
- Phase
- Interventional
- 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 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- ASA 1 and ASA 2 patient population
- not having had a third molar surgery before
- volunteer to participate in the study
Who cannot join
- dental phobia
- patients who will be treated under general anesthesia
- refusing the measurements
- not filling out the VAS
- encountering complications during surgery
- operations lasting more than 45 minutes
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Selcuk University, Faculty of Dentistry
Konya, Selçuklu
About this study
The investigator's aim in this study was to evaluate the preoperative anxiety and pain felt during the operation due to exposure to green, red, and blue light. For this purpose, the participants will wear colored glasses before the operation. The investigator will evaluate the patient's anxiety change and the pain she/he feels during the procedure.
- Conditions
- Anxiety, Anxiety State, Tooth Extraction Status Nos
- Being tested
- Green color exposure, Red color exposure, Blue color exposure, control
- Medical subject headings
- Anxiety Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Green color exposureOther
Patients will wear green colored glasses before and during the surgery.
Red color exposureOther
Patients will wear red colored glasses before and during the surgery.
Blue color exposureOther
Patients will wear blue colored glasses before and during the surgery.
controlOther
Patients will wear translucent glasses before and during the surgery.
| Study group | Role | What they receive |
|---|---|---|
| Translucent Glasses Group | Placebo comparator | Not described Receives: Other: control |
| Green Colored Glasses Group | Experimental | Not described Receives: Other: Green color exposure |
| Red Colored Glasses Group | Experimental | Not described Receives: Other: Red color exposure |
| Blue Colored Glasses Group | Experimental | Not described Receives: Other: Blue color exposure |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in the Anxiety Score
Patients complete the State-Trait Anxiety Inventory (STAI) while seated in the dental unit. Ten minutes after the glasses are worn, patients fill out the anxiety scale again. Changes in the scores are the primary outcome of the study. The scale range is 20-40. A lower score means better results.
Measured: 1 minute after the participant sits the dental unit and 10 minutes after
Secondary outcomes (5)
Change in the oxygen saturation
Saturation measurement is done from the fingertip using a pulse oximeter one minute after the patient sits in the dental unit and after ten minutes. Changes in the scores are the secondary outcome of the study. The average value is above %90.
Measured: 1 minute after the participant sits the dental unit and 10 minutes after
Change in the pulsation
Pulsation was measured from the fingertip by a pulse oximeter one minute after the patient sat in the dental unit and after ten minutes. Changes in the scores are the secondary outcome of the study. The average value is between 65 and 75.
Measured: 1 minute after the participant sits the dental unit and 10 minutes after
Intraoperative Pain Score
Measuring the pain felt by the patient after the operation with the help of the visual analog scale. The range of Scala is 0-10. A lower score means better results.
Measured: 1 minutes after the surgery
Change in the salivary cortisol level
Measuring the salivary cortisol level one minute after the patient sits in the dental unit and after ten minutes. Changes in the levels are the secondary outcome of the study.
Measured: 1 minute after the participant sits the dental unit and 10 minutes after
Change in the salivary alfa-amilase level
Measuring the salivary alfa-amylase level one minute after the patient sits in the dental unit and after ten minutes. Changes in the levels are the secondary outcome of the study.
Measured: 1 minute after the participant sits the dental unit and 10 minutes after
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jun 2024
- Study start1 Feb 2024
- Primary completion1 Sep 2025
- Study completion1 Dec 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AnxietyStudies of the same condition, open and under way.
- More trials run by Selcuk UniversityThe sponsor's other registered studies.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 84 participants (actual)
Sponsor and investigators
- Lead sponsor
- Selcuk University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Gokhan Gurses, Selcuk University
- Investigators
- Gökhan Gürses, Study chair, Selcuk University, Faculty of Dentistryİsmail Okumuş, Principal investigator, Selcuk University, Faculty of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06452836
- Sponsor's protocol ID
- SelcukU004
- Status last verified
- Apr 2026
- First submitted
- 5 Jun 2024
- Last updated
- 22 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 22 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Colors, Can They Reduce the Dental Anxiety
- ClinicalTrials.gov ID
- NCT06452836
- Acronym / sponsor ID
- SelcukU004
- Conditions
- Anxiety, Anxiety State, Tooth Extraction Status Nos
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 84 participants (actual)
- Lead sponsor
- Selcuk UniversityUniversity, hospital or other
- Study start
- 1 Feb 2024 (actual)
- Primary completion
- 1 Sep 2025 (actual)
- Study completion
- 1 Dec 2025 (actual)
- First posted
- 11 Jun 2024 (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.
The investigator's aim in this study was to evaluate the preoperative anxiety and pain felt during the operation due to exposure to green, red, and blue light. For this purpose, the participants will wear colored glasses before the operation. The investigator will evaluate the patient's anxiety change and the pain she/he feels during the procedure.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Translucent Glasses Group | Placebo comparator | Other: control |
| Green Colored Glasses Group | Experimental | Other: Green color exposure |
| Red Colored Glasses Group | Experimental | Other: Red color exposure |
| Blue Colored Glasses Group | Experimental | Other: Blue color exposure |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- ASA 1 and ASA 2 patient population
- not having had a third molar surgery before
- volunteer to participate in the study
Key exclusion criteria (6 listed)
- dental phobia
- patients who will be treated under general anesthesia
- refusing the measurements
- not filling out the VAS
- encountering complications during surgery
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 |
|---|---|---|
| Green color exposurePatients will wear green colored glasses before and during the surgery. | Other | Green Colored Glasses Group |
| Red color exposurePatients will wear red colored glasses before and during the surgery. | Other | Red Colored Glasses Group |
| Blue color exposurePatients will wear blue colored glasses before and during the surgery. | Other | Blue Colored Glasses Group |
| controlPatients will wear translucent glasses before and during the surgery. | Other | Translucent Glasses Group |
Primary outcome
Change in the Anxiety Score
Time frame: 1 minute after the participant sits the dental unit and 10 minutes after
Patients complete the State-Trait Anxiety Inventory (STAI) while seated in the dental unit. Ten minutes after the glasses are worn, patients fill out the anxiety scale again. Changes in the scores are the primary outcome of the study. The scale range is 20-40. A lower score means better results.
5 secondary outcomes
Change in the oxygen saturation
Time frame: 1 minute after the participant sits the dental unit and 10 minutes after
Change in the pulsation
Time frame: 1 minute after the participant sits the dental unit and 10 minutes after
Intraoperative Pain Score
Time frame: 1 minutes after the surgery
Change in the salivary cortisol level
Time frame: 1 minute after the participant sits the dental unit and 10 minutes after
Change in the salivary alfa-amilase level
Time frame: 1 minute after the participant sits the dental unit and 10 minutes after
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 22 Apr 2026.
- Individual participant dataSharing planned: Undecided
Related trials for Anxiety
Not yet recruiting
Effect of Stress Ball Use During Femoral Arterial Sheath Removal After Coronary Angiography
Femoral Arterial Sheath Removal, Stress Ball
Recruiting
Unified Protocol in Penitentiary Facilities
Depression Disorders, Anxiety
Not yet recruiting
Preventive and Personalized Digital Emotion Regulation Skills Intervention to Reduce Depression and Anxiety in Youths With Adverse Childhood Experiences
Adverse Childhood Experience, Depression / Major Depressive Disorder
Recruiting
Effect of a Brief Daily Digital Meditation on Well-Being in US Young Adults (BEGIN II)
Mental Health and General Well-being
Not yet recruitingObservational study
Functional Impact of Psychological Symptoms in Patients With Superior Semicircular Canal Dehiscence Syndrome (SSCD): a National Cross-sectional Study
Superior Semicircular Canal Dehiscence
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.
Gökhan Gürses study chair
Selcuk University, Faculty of Dentistry
İsmail Okumuş principal investigator
Selcuk University, Faculty of Medicine
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Green color exposure, Red color exposure and Blue color exposure in people with Anxiety and Anxiety State, run by Selcuk 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 3 inclusion and 6 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 22 Apr 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. Some participants in this study may receive a placebo. 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?
Change in the Anxiety Score (time frame: 1 minute after the participant sits the dental unit and 10 minutes after). 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 22 Apr 2026; AzTrials last refreshed its copy on 6 Nov 2026.