NCT03224481

Brief Summary

Participants will be recruited for inclusion at a routine adjustment appointment prior to planned removal of the appliances. Following removal of the appliances, consenting participants will be randomly allocated to one of two groups by computer-generated random allocation. Allocation will be concealed from the treating clinician using of an opaque sealed envelope system. Standard stone model records will be available for all participants following removal of the appliances (T0). Participants in both groups will have follow-up scheduled for 3 (T1), 6 (T2) and 12 (T3) months following removal of the braces. All participants will be instructed to wear standard clear, plastic (Essix-type) retainers on a full-time basis for 6 months, followed by night-time wear for a further 6 months. A micro-electronic timer will be integrated within the upper Essix-type retainer. All participants will be given standard advice at each recall visit. Participants in the intervention group will receive tailored electronic reminders in the form of a mobile application. The frequency and content of the reminders will be informed by qualitative interviews involving participants from an allied trial, and from posts related to orthodontic retainers shared on social media. Instructions on the necessary duration of retention, maintenance of retainers, departmental details, allied to advice on appropriate management for appliance breakages, and delineation of the implication of suboptimal retainer wear will be included. Also, information related the debond visit and maintenance of optimal oral hygiene levels will be incorporated in the mobile application. Participants in the control group will not receive additional reminders. Treating clinicians will be kept blind to the study group. All patients failing an appointment will be sent another. Those wishing to withdraw from the trial may do so at any point without affecting continuing care with records taken at the point of withdrawal from the study with data analysis on an intention to treat basis. Thereafter, patient experiences with electronic reminders will be evaluated on a subset of participants using one-to-one interviews.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
84

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Mar 2018

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 24, 2016

Completed
9 months until next milestone

First Posted

Study publicly available on registry

July 21, 2017

Completed
7 months until next milestone

Study Start

First participant enrolled

March 2, 2018

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2020

Completed
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 30, 2021

Completed
3.6 years until next milestone

Results Posted

Study results publicly available

April 30, 2025

Completed
Last Updated

April 30, 2025

Status Verified

April 1, 2025

Enrollment Period

2.8 years

First QC Date

October 24, 2016

Results QC Date

May 15, 2023

Last Update Submit

April 28, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Wear of Removable Retainer Per Day (Hours) in the Intervention and the Control Groups

    Objective levels of retainer wear will be recorded from an integrated micro-electronic sensor in the retainer

    3 months - 6 months - 12 months

Secondary Outcomes (7)

  • Self-reported Hours of Retainer Wear Per Day

    3 months - 6 months - 12 months

  • Study Model Based Outcomes

    3 months - 6 months - 12 months

  • Patients' Experience With Electronic Reminders in a Related Qualitative Element (Positive and Negative Experiences, in Addition to Feedback From Participants in Relation to Tailored Electronic Reminders Based on One-to-one Interviews)

    6 months

  • Assessment of Oral Hygiene Levels and Periodontal Outcomes Including: Plaque Scores, Bleeding on Probing, and Clinical Attachment Level

    Baseline - 3 months - 6 months

  • Knowledge With Orthodontic Retainers

    3 months

  • +2 more secondary outcomes

Study Arms (2)

Receive electronic reminder

EXPERIMENTAL

Participants in the intervention group will receive tailored electronic reminders. The frequency and content of the reminders will be informed by the qualitative findings of an ongoing trial, but are likely to include an intra-oral photograph taken pre-treatment and following removal of the active appliances, instructions on the necessary duration of retention, advice on maintenance of retainers, departmental details, advice on appropriate management for appliance breakages, and delineation of the implication of suboptimal retainer wear. Also, information related to the debond visit and maintenance of optimal oral hygiene levels will be incorporated in the mobile application.

Other: Electronic reminder

Control group

NO INTERVENTION

Participants in the control group will not receive additional reminders.

Interventions

The frequency and content of the reminders will be informed by the qualitative findings of an ongoing trial, but are likely to include an intra-oral photograph taken pre-treatment and following removal of the active appliances, instructions on the necessary duration of retention, advice on maintenance of retainers, departmental details, advice on appropriate management for appliance breakages, and delineation of the implication of suboptimal retainer wear. Also, information related to the debond visit and maintenance of optimal oral hygiene levels will be incorporated in the mobile application.

Receive electronic reminder

Eligibility Criteria

Age12 Years - 21 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Aged 12 to 21 years
  • Planned for removable retention with Essix-type vacuum-formed retainers
  • In the permanent dentition

You may not qualify if:

  • Inability to access or peruse electronic mail
  • Cleft lip and palate and other craniofacial anomalies

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Royal London Hospital Barts Health NHS Trust

London, E1 1BB, United Kingdom

Location

Related Publications (2)

  • Zhang X, Al-Moghrabi D, Pandis N, Shah S, Fleming PS. The effectiveness of a bespoke mobile application in improving adherence with removable orthodontic retention over 12 months: A randomized controlled trial. Am J Orthod Dentofacial Orthop. 2022 Mar;161(3):327-337. doi: 10.1016/j.ajodo.2021.09.010. Epub 2021 Nov 17.

  • Al-Moghrabi D, Pandis N, McLaughlin K, Johal A, Donos N, Fleming PS. Evaluation of the effectiveness of a tailored mobile application in increasing the duration of wear of thermoplastic retainers: a randomized controlled trial. Eur J Orthod. 2020 Nov 3;42(5):571-579. doi: 10.1093/ejo/cjz088.

MeSH Terms

Conditions

Patient Compliance

Condition Hierarchy (Ancestors)

Patient Acceptance of Health CareTreatment Adherence and ComplianceHealth BehaviorBehavior

Results Point of Contact

Title
Professor Padhraig Fleming
Organization
Queen Mary University of London

Study Officials

  • Padhraig Fleming

    Queen Mary University of London

    STUDY CHAIR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 24, 2016

First Posted

July 21, 2017

Study Start

March 2, 2018

Primary Completion

December 31, 2020

Study Completion

September 30, 2021

Last Updated

April 30, 2025

Results First Posted

April 30, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will share

Data will be freely available to reviewers in future and may be made available on a public database

Locations