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CompletedNCT06452836Updated Apr 22, 2026

Colors, Can They Reduce the Dental Anxiety

An interventional study of Green color exposure and Red color exposure in Anxiety, Anxiety State and Tooth Extraction Status Nos, sponsored by Selcuk University. Completed at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-04-22.

Sponsored by Selcuk University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 4 months after the study started (first participant enrolled Feb 2024, registered Jun 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
84
Allocation
Randomized
Ages
18 Years to 40 Years
Sex
All
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Study 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. The investigator will evaluate the patient's anxiety change and the pain she/he feels during the procedure.

02

Conditions studied

  • Anxiety
  • Anxiety State
  • Tooth Extraction Status Nos

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03

In context

Anxiety Disorders

4,868 studies on the registry are indexed under Anxiety Disorders; 1,390 are open to participants now.

This study's enrollment of 84 is close to the median of 80 across 4,174 interventional studies indexed under Anxiety Disorders.

Browse Anxiety Disorders studies →

Lead sponsor

Selcuk University is the lead sponsor of 248 studies on the registry; 63 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • ASA 1 and ASA 2 patient population
  • not having had a third molar surgery before
  • volunteer to participate in the study

Exclusion criteria

Exclusion Criteria:

  • 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
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
84 participants (actual)

Study arms

  • Placebo comparator
    Translucent Glasses Group

    Other: control

  • Experimental
    Green Colored Glasses Group

    Other: Green color exposure

  • Experimental
    Red Colored Glasses Group

    Other: Red color exposure

  • Experimental
    Blue Colored Glasses Group

    Other: Blue color exposure

Interventions

  • OtherGreen color exposure

    Patients will wear green colored glasses before and during the surgery.

  • OtherRed color exposure

    Patients will wear red colored glasses before and during the surgery.

  • OtherBlue color exposure

    Patients will wear blue colored glasses before and during the surgery.

  • Othercontrol

    Patients will wear translucent glasses before and during the surgery.

06

What researchers measure

Primary outcomes

  1. 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.

    Time frame: 1 minute after the participant sits the dental unit and 10 minutes after

Secondary outcomes

  1. 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.

    Time frame: 1 minute after the participant sits the dental unit and 10 minutes after

  2. 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.

    Time frame: 1 minute after the participant sits the dental unit and 10 minutes after

  3. 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.

    Time frame: 1 minutes after the surgery

  4. 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.

    Time frame: 1 minute after the participant sits the dental unit and 10 minutes after

  5. 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.

    Time frame: 1 minute after the participant sits the dental unit and 10 minutes after

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Study locations

1 site
  • Selcuk University, Faculty of Dentistry
    Konya, Selçuklu, Turkey (Türkiye)
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 22, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06452836
Lead sponsor
Selcuk University
Responsible party
Gokhan Gurses (Assistant Professor, Selcuk University) — Principal investigator
First posted
Jun 11, 2024
Start date
Feb 1, 2024
Primary completion
Sep 1, 2025
Completion
Dec 1, 2025
Last update
Apr 22, 2026

Study contacts

Gökhan Gürses
study chair · Selcuk University, Faculty of Dentistry
İsmail Okumuş
principal investigator · Selcuk University, Faculty of Medicine

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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