NCT02742493

RCT for the Effectiveness of 3 Orthodontic Retention Schemes on Post-treatment Stability and Gingival Recession

A Single-center, 3-arm, Parallel-group Randomized Controlled Trial to Evaluate the Effectiveness of Three Orthodontic Retention Schemes in Preventing Post-treatment Mandibular Arch Changes and Gingival Recession in Children and Adolescents

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 60 (estimated)
• Sponsor: University of Athens · Academic / Other
• Sex: All
• Age: 10 Years – 16 Years
• Healthy volunteers: Accepted

Summary

The present study aims to assess the effectiveness of three different retention schemes used to maintain tooth position after orthodontic treatment with fixed orthodontic appliances (stability) and to evaluate possible association between retention scheme and gingival recessions on the lingual surfaces of the lower anterior teeth seen for up to 5 years post-treatment. Moreover the possible association between primary relapse tendency and long term occlusal stability will be evaluated.

Detailed description

This is a randomized, controlled, single-center, equivalence trial with three parallel groups and an allocation ratio of 1:1:1, that aims to investigate the effectiveness of 3 orthodontic retention schemes on post-treatment mandibular arch stability and gingival recession.

Conditions

• Relapse
• Gingival Recession

Interventions

Type	Name	Description
OTHER	0.028 bonded to canines	lower fixed canine and canine retainer (0.028 stainless steel bonded to canines) and upper removable Hawley (Intervention A)
OTHER	0.027 7-strand bonded to all 6	lower fixed canine to canine retainer (7-strand Twistflex 0.027 bonded to all six anterior teeth) and upper removable Hawley (Intervention B)
OTHER	removable Hawley-type	lower Hawley-type and upper Hawley removable retainer (Control)

Timeline

• Start date: 2016-03-16
• Primary completion: 2025-06-30
• Completion: 2025-11-01
• First posted: 2016-04-19
• Last updated: 2025-01-14

Locations

1 site across 1 country: Greece