NCT05006339.

Study name	The use of remote monitoring for orthodontic retention review
Methods	Study design: single‐blinded (outcome assessors), 2‐armed, parallel, RCT Country: Australia  Duration of follow‐up: 4 years Inclusion criteria  Consent to participate in the trial and comply with the retention regime and able to follow instructions Permanent dentition Good general health Good oral hygiene and good periodontal health Owning or having access to a mobile/smart phone compatible with Dental Monitoring application (DM app is available for use on all iOS and Android devices) Exclusion criteria Congenital anomalies or craniofacial syndromes Poor oral hygiene and poor periodontal health Missing teeth and teeth with poor enamel quality Patients who were treated with orthognathic surgery Patients who are unwilling or unable to follow the instructions provided
Participants	The study aims to enrol and randomise 82 participants.
Interventions	Intervention A: dental device monitoring Comparator B: clinic reviews (orthodontic retention review via in‐office visits as per routine care intervention)
Outcomes	Primary outcome: stability LII Spacing, if present  Intercanine width Intermolar width Overjet Overbite Secondary outcomes Failure (identification: yes or no) Failure (identification: duration, in days) Compliance Fit of retainer (space in mm between retainer and teeth) Cavity presence Gingivitis Patient satisfaction  Cost effectiveness
Starting date	1 December 2021
Contact information	Principal Investigator: Oyku Dalci Institution: Sydney Local Health District, The University of Sydney, Australia Email: oyku.dalci@sydney.edu.au
Notes	This study is estimated to be completed in September 2023.