Impact of Presentation Sequence on Patient Tooth Shade Selection (NCT07370545) | Clinical Trial Compass
CompletedNot Applicable
Impact of Presentation Sequence on Patient Tooth Shade Selection
Jordan210 participantsStarted 2026-01-26
Plain-language summary
This study is a clinical trial designed to understand how the way a dentist presents tooth color options affects a patient's final choice for their dental treatment. The insvestigators know that patients often prefer lighter, "bleached" shades, but the process of choosing can be influenced by the order in which the shades are shown.
The insvestigators will randomly dividing participants into three groups. One group will see natural shades first, followed by bleached shades. A second group will see bleached shades first, followed by natural shades. The third group will see all shades at once.
The main goal is to measure how often patients change their mind (switch their choice) and by how much (the "jump" in lightness) depending on the order of presentation. The insvestigators will also use a questionnaire to see if a patient's self-consciousness about their smile affects how light of a shade they choose. The results will help dentists improve communication and ensure patients are truly satisfied with their final aesthetic decision.
Who can participate
Age range
18 Years – 65 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Adult patients aged 18 years or older.
* Seeking aesthetic dental treatment (e.g., anterior restorations, veneers, or tooth bleaching).
* Possessing at least one sound, non-restored maxillary central incisor (tooth #8 or #9) to serve as a reference for objective shade measurement.
* Ability to understand the study procedures and provide written informed consent.
* Fluent in the language of the study (Arabic/English) to complete the psychosocial questionnaire (PIDAQ).
Exclusion Criteria:
* Congenital or acquired color vision deficiencies (screened using the Ishihara test).
* Cognitive impairments or psychological conditions that may affect decision-making or the ability to complete questionnaires.
* Extensive existing restorations, crowns, or severe intrinsic staining (e.g., tetracycline staining) on the maxillary anterior teeth.
* Active periodontal disease or poor oral hygiene that may interfere with accurate shade assessment.
* Previous history of professional tooth bleaching within the last 6 months.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.