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

Not Applicable

Completed

• Conditions: Relapse
• Interventions: Other: Chairside Retainers; Other: Computer Aided Design/ Computer Aided Manufacturing Retainers; Other: Lab-based Retainers

• Registration Number: NCT05915273
• Lead Sponsor: Nourhan M.Aly

Brief Summary

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2019-09-01
• Primary Completion: 2022-09-01
• Study Completion: 2022-09-30
• Status Verified: 2023-06
• Study First Submitted: 2023-06-13
• Study First Submitted QC: 2023-06-13
• Last Update Submitted: 2023-06-13
• Study First Posted: 2023-06-22
• Last Update Posted: 2023-06-22

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 43

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Chairside group	Chairside Retainers	-
CAD/CAM group	Computer Aided Design/ Computer Aided Manufacturing Retainers	-
Lab group	Lab-based Retainers	-

Primary Outcome Measures

Name	Time	Method
Change in Little's Irregularity Index (LII)	2 years	ICW was measured on the Meshlab software using the 3D ruler measurement tool. Pre-treatment, post-treatment, and post-retention measures were recorded and any change in the LII was considered relapse.
Change in intercanine width (ICW)	2 years	ICW was measured on the Meshlab software using the 3D ruler measurement tool. Pre-treatment, post-treatment, and post-retention measures were recorded and any change in the ICW was considered relapse.

Trial Locations

Locations (1)

Saint Louis University; 🇺🇸 Saint Louis, Missouri, United States