Behaviour ChangeRCPDNCT06877117
Rectangular Collimation in Pediatric Dentistry
A study testing Pictorial Framing and Traffic Light Color Coding Framing in people with Behaviour Change and Nudging, run by University of Toronto at 1 site in Canada.
Trial summary
This project aims to investigate whether simple behavioural interventions, such as pictorial framing and traffic-light-color-coding, can positively influence pediatric dentists' decision-making in adopting rectangular collimation over round collimation for dental radiographs taken in clinical practice. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Behaviour Change, Nudging, Rectangular Colllimation in Pediatric Dentistry
- What is being tested?
- Pictorial Framing and Traffic Light Color Coding Framing
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 6,473 participants
- Where
- 1 siteCanada
- Study dates
- Mar 2025to May 2025
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- active members of American Academy of Pediatric Dentistry
Who cannot join
- pre and post doctoral students and affiliated members
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Canada1 site
Faculty of Dentistry, University of Toronto
Toronto, Ontario, ON M5T
About this study
Official title: Exploring Nudging Strategies to Encourage Rectangular Collimation in Pediatric Dental Practice
This project aims to investigate whether simple behavioural interventions, such as pictorial framing and traffic-light-color-coding, can positively influence pediatric dentists' decision-making in adopting rectangular collimation over round collimation for dental radiographs taken in clinical practice.
Read the detailed description
- Introduction Dental radiographs are essential in diagnosing oral conditions in pediatric patients. Despite the availability of rectangular collimation as a recommended radiation safety measure, many pediatric dentists continue to use round collimation, which results in unnecessary radiation exposure. This study explores whether nudging strategies-such as pictorial framing and traffic-light color coding-can influence pediatric dentists' decision-making to encourage the adoption of rectangular collimation.
- Research Objectives This study aims to: Educate pediatric dentists on the benefits of rectangular collimation over round collimation. Assess current collimation practices among pediatric dentists. Evaluate whether behavioral nudging strategies influence pediatric dentists' willingness to adopt rectangular collimation.
- Study Hypothesis Null Hypothesis: Nudging strategies (pictorial framing and traffic-light color coding) have no impact on pediatric dentists' willingness to adopt rectangular collimation. Alternative Hypothesis: The implementation of nudging strategies positively influences pediatric dentists to use rectangular collimation.
- Methodology Study Design
- A randomized, quantitative survey distributed online.
- Three study groups:
- Control Group (No nudging intervention) 2. Pictorial Framing Group (Visual aids illustrating collimation benefits) 3. Traffic-Light Color Coding Group (Decision cues using color-based risk indicators)
Participants Target Population: Pediatric dentists who are active members of the American Academy of Pediatric Dentistry (AAPD) in the U.S. and Canada.
Sample Size: As a one of its kind research project, the minimum for comparison is 30 participants in each sample group.
Data Collection A self-administered online survey conducted via REDCap. Survey distribution follows randomization of participants into the three groups.
Three e-mail invitations sent at two-week intervals over a six-week period.
Outcome Measures Primary Outcome: Change in willingness to adopt rectangular collimation. Secondary Outcome: Differences in responses across study groups.
Statistical Analysis Descriptive and comparative statistics using SPSS. Statistical significance set at p < 0.05.
- Ethical Considerations Study approved by the University of Toronto Health Sciences Research Ethics Board.
Participants' responses are anonymous, and data security measures are in place.
- Expected Impact This study will provide valuable insights into behavioral interventions for pediatric dentistry. If effective, nudging strategies could be incorporated into clinical guidelines to enhance radiation safety practices.
- Being tested
- Pictorial Framing, Traffic Light Color Coding Framing
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Pictorial FramingBehavioural
Also called Behavioural, Prompt, Pictorial Nudging, Framing
Visual aids illustrating collimation benefits
Traffic Light Color Coding FramingBehavioural
Also called Nudges, Framing, behavioral, prompt
Decision cues using color-based risk indicators
| Study group | Role | What they receive |
|---|---|---|
| Control | No intervention | Control Arm receives only didactic information and no nudges |
| Pictorial Framing | Experimental | Written information is supplemented with pictorial nudges. Receives: Behavioral: Pictorial Framing |
| Traffic Light Color Coding | Experimental | Written information is supplemented with traffic light colour coding nudges. Receives: Behavioral: Traffic Light Color Coding Framing |
What is being measured
The primary outcome is the main question the study is designed to answer.
Behavioral Change
The primary outcome of this study is the change in pediatric dentists' reported willingness to adopt rectangular collimation based on the nudging strategies employed. Specifically, the study will measure whether pictorial framing and traffic-light-color-coding influence the likelihood of adopting rectangular collimation in clinical practice. Responses collected in 10 point visual analog scale will be compared for effectiveness of each nudging strategy individually in promoting behavior change and mean scores will be compared across all groups.
Measured: Day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Mar 2025
- Study startMar 2025 (estimated)
- Primary completionMay 2025 (estimated)
- Study completionMay 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Behaviour ChangeStudies 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 6,473 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Toronto
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Varsha Lal, University of Toronto
- Investigators
- Hashim Nainar, Dentist, Study director, University of Toronto
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06877117
- Sponsor's protocol ID
- 47738
- Acronym
- RCPD
- Status last verified
- Mar 2025
- First submitted
- 4 Mar 2025
- Last updated
- 14 Mar 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: It does not abide by the requirements laid out by American Academy of Pedaitric Dentistry, which provided the participant list. Individual partipants are not consenting to sharing of individual data.
Publications
Oakes AH, Patel MS. A nudge towards increased experimentation to more rapidly improve healthcare. BMJ Qual Saf. 2020 Mar;29(3):179-181. doi: 10.1136/bmjqs-2019-009948. Epub 2019 Nov 19. No abstract available.
PubMed 31744847Schubbe D, Scalia P, Yen RW, Saunders CH, Cohen S, Elwyn G, van den Muijsenbergh M, Durand MA. Using pictures to convey health information: A systematic review and meta-analysis of the effects on patient and consumer health behaviors and outcomes. Patient Educ Couns. 2020 Oct;103(10):1935-1960. doi: 10.1016/j.pec.2020.04.010. Epub 2020 May 11.
PubMed 32466864
Study at a glance
From the registry record, last updated by the sponsor on 14 Mar 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Exploring Nudging Strategies to Encourage Rectangular Collimation in Pediatric Dental Practice
- ClinicalTrials.gov ID
- NCT06877117
- Acronym / sponsor ID
- RCPD / 47738
- Study type
- Interventional
- Recruitment status
- Enrolling by invitation
- Enrolment
- 6,473 participants (estimated)
- Lead sponsor
- University of TorontoUniversity, hospital or other
- Study start
- Mar 2025 (estimated)
- Primary completion
- May 2025 (estimated)
- Study completion
- May 2025 (estimated)
- First posted
- 14 Mar 2025 (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 project aims to investigate whether simple behavioural interventions, such as pictorial framing and traffic-light-color-coding, can positively influence pediatric dentists' decision-making in adopting rectangular collimation over round collimation for dental radiographs taken in clinical practice.
Detailed description
- Introduction Dental radiographs are essential in diagnosing oral conditions in pediatric patients. Despite the availability of rectangular collimation as a recommended radiation safety measure, many pediatric dentists continue to use round collimation, which results in unnecessary radiation exposure. This study explores whether nudging strategies-such as pictorial framing and traffic-light color coding-can influence pediatric dentists' decision-making to encourage the adoption of rectangular collimation.
- Research Objectives This study aims to: Educate pediatric dentists on the benefits of rectangular collimation over round collimation. Assess current collimation practices among pediatric dentists. Evaluate whether behavioral nudging strategies influence pediatric dentists' willingness to adopt rectangular collimation.
- Study Hypothesis Null Hypothesis: Nudging strategies (pictorial framing and traffic-light color coding) have no impact on pediatric dentists' willingness to adopt rectangular collimation. Alternative Hypothesis: The implementation of nudging strategies positively influences pediatric dentists to use rectangular collimation.
- Methodology Study Design
- A randomized, quantitative survey distributed online.
- Three study groups:
- Control Group (No nudging intervention) 2. Pictorial Framing Group (Visual aids illustrating collimation benefits) 3. Traffic-Light Color Coding Group (Decision cues using color-based risk indicators)
Participants Target Population: Pediatric dentists who are active members of the American Academy of Pediatric Dentistry (AAPD) in the U.S. and Canada.
Sample Size: As a one of its kind research project, the minimum for comparison is 30 participants in each sample group.
Data Collection A self-administered online survey conducted via REDCap. Survey distribution follows randomization of participants into the three groups.
Three e-mail invitations sent at two-week intervals over a six-week period.
Outcome Measures Primary Outcome: Change in willingness to adopt rectangular collimation. Secondary Outcome: Differences in responses across study groups.
Statistical Analysis Descriptive and comparative statistics using SPSS. Statistical significance set at p < 0.05.
- Ethical Considerations Study approved by the University of Toronto Health Sciences Research Ethics Board.
Participants' responses are anonymous, and data security measures are in place.
- Expected Impact This study will provide valuable insights into behavioral interventions for pediatric dentistry. If effective, nudging strategies could be incorporated into clinical guidelines to enhance radiation safety practices.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Control | No intervention | –Control Arm receives only didactic information and no nudges |
| Pictorial Framing | Experimental | Behavioral: Pictorial FramingWritten information is supplemented with pictorial nudges. |
| Traffic Light Color Coding | Experimental | Behavioral: Traffic Light Color Coding FramingWritten information is supplemented with traffic light colour coding nudges. |
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (1 listed)
- active members of American Academy of Pediatric Dentistry
Key exclusion criteria (1 listed)
- pre and post doctoral students and affiliated members
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 |
|---|---|---|
| Pictorial FramingAlso: Behavioural, Prompt, Pictorial Nudging, FramingVisual aids illustrating collimation benefits | Behavioural | Pictorial Framing |
| Traffic Light Color Coding FramingAlso: Nudges, Framing, behavioral, promptDecision cues using color-based risk indicators | Behavioural | Traffic Light Color Coding |
Primary outcome
Behavioral Change
Time frame: Day 1
The primary outcome of this study is the change in pediatric dentists' reported willingness to adopt rectangular collimation based on the nudging strategies employed. Specifically, the study will measure whether pictorial framing and traffic-light-color-coding influence the likelihood of adopting rectangular collimation in clinical practice. Responses collected in 10 point visual analog scale will be compared for effectiveness of each nudging strategy individually in promoting behavior change and mean scores will be compared across all groups.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 14 Mar 2025.
- Background: PubMed 31744847Oakes AH, Patel MS. A nudge towards increased experimentation to more rapidly improve healthcare. BMJ Qual Saf. 2020 Mar;29(3):179-181. doi: 10.1136/bmjqs-2019-009948. Epub 2019 Nov 19. No abstract available.
- Background: PubMed 32466864Schubbe D, Scalia P, Yen RW, Saunders CH, Cohen S, Elwyn G, van den Muijsenbergh M, Durand MA. Using pictures to convey health information: A systematic review and meta-analysis of the effects on patient and consumer health behaviors and outcomes. Patient Educ Couns. 2020 Oct;103(10):1935-1960. doi: 10.1016/j.pec.2020.04.010. Epub 2020 May 11.
- Individual participant dataSharing planned: No. It does not abide by the requirements laid out by American Academy of Pedaitric Dentistry, which provided the participant list. Individual partipants are not consenting to sharing of individual data.
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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.
Hashim Nainar, Dentist study director
University of Toronto
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Pictorial Framing and Traffic Light Color Coding Framing in people with Behaviour Change and Nudging, run by University of Toronto at 1 site in Canada.
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 1 inclusion and 1 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: enrolling by invitation, as of the sponsor's last update on 14 Mar 2025. 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 Canada. 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?
This study is still under way. Results are not available in the source record yet.
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?
Behavioral Change (time frame: Day 1). 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 NCT06877117, which also lists 2 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 14 Mar 2025.