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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| CAD/CAM group | Experimental |
| |
| Lab group | Active Comparator |
| |
| Chairside group | Active Comparator |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Computer Aided Design/ Computer Aided Manufacturing Retainers | Other | Custom-bent fixed retainer wires from an in-office CAD/CAM system with FixR software and the BenderI machine (YOAT Corporation, Lynwood, WA). Dentaflex wires- round, 0.5mm in diameter, three-stranded Stainless Steel (Dentaurum GmbH & Co., Ispringen, Germany)- were used for the CAD/CAM group |
| Measure | Description | Time Frame |
|---|---|---|
| Change in intercanine width (ICW) | 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. | 2 years |
| Change in Little's Irregularity Index (LII) | 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. | 2 years |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Giau Tran | Department of Orthodontics, Saint Louis University, Saint Louis, MO, USA. | Principal Investigator |
| Ryan Rucker | Department of Orthodontics, Saint Louis University, Saint Louis, MO, USA. | Principal Investigator |
| Patrick Foley, PhD | Department of Orthodontics, Saint Louis University, Saint Louis, MO, USA. | Study Chair |
| Brent Bankhead | Department of Orthodontics, Saint Louis University, Saint Louis, MO, USA. | Study Chair |
| Samar M Adel, PhD | Alexandria University | Study Director |
| Ki B Kim | Department of Orthodontics, Saint Louis University, Saint Louis, MO, USA. | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Saint Louis University | St Louis | Missouri | 63104 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 38168815 | Derived | Tran G, Rucker R, Foley P, Bankhead B, Adel SM, Kim KB. Relapse and failure rates between CAD/CAM and conventional fixed retainers: a 2-year follow-up of a randomized controlled clinical trial. Eur J Orthod. 2024 Jan 1;46(1):cjad079. doi: 10.1093/ejo/cjad079. |
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| ID | Term |
|---|---|
| D012008 | Recurrence |
| ID | Term |
|---|---|
| D020969 | Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| Lab-based Retainers | Other | The lab group used the same type of wire as the CAD/CAM group but was manually bent by a lab technician |
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| Chairside Retainers | Other | The chairside group used three-stranded Stainless Steel, 0.974mm x 0.402 mm, flexible Ortho-FlexTech wires (Reliance, Itasca, IL) |
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