Relapse and Failure Rates Between CAD/CAM and Conventional Fixed Retainers

Relapse and Failure Rates Between CAD/CAM and Conventional Fixed Retainers: A 2-year Follow-up of a Randomized Controlled Clinical Trial

The aim of this study was to compare the differences in relapse and failure rates in patients treated with fixed retainers (FRs) using Computer-Aided Design/Computer-Aided Manufacturing technology, lab-based technique, and chairside method.

Inclusion Criteria:

• completion of comprehensive orthodontic treatment
• class I molar and canine relationships
• indication for a fixed retainer on the mandibular anterior teeth.
• no extractions done as part of their treatment.
• Treatment with preadjusted edgewise appliance.

Exclusion Criteria:

• refusal to participate
• refusal to have fixed retainers
• poor oral hygiene
• non-compliance