CTRI/2021/11/038102.

Study name	A comparison of clinical efficiency of nanocomposite and conventional composite used for bonding lower fixed retainers
Methods	Study design: double‐blinded (participants and outcome assessor), 2‐armed, parallel RCT Country: India Duration of follow‐up: debond and start of the retention phase, 3 months, 6 months, 9 months and 12 months Inclusion criteria  Adult patients visiting the department for orthodontic treatment, and have undergone debonding and indicated for fixed retention in the mandibular arch Exclusion criteria  Patients with chronic periodontal diseases Missing mandibular anterior teeth
Participants	The study aims to enrol and randomise 40 participants.
Interventions	Intervention: nanoparticle containing composite: 1% TiO2 Comparator: Transbond XT conventional composite
Outcomes	Primary outcome Survival rate  Secondary outcome Periodontal health
Starting date	26 November 2021
Contact information	Principal investigator: Dr Shravanthi Institution: Department of Orthodontics and Dentofacial Orthopedics, Dayananda Sagar College of Dental Sciences, India Email: gauthamkalladka@gmail.com
Notes