An interventional study of 0.028 bonded to canines and 0.027 7-strand bonded to all 6 in Relapse and Gingival Recession, sponsored by University of Athens. Status unknown at 1 site in Greece. Open to participants aged 10 Years to 16 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-01-14.
Sponsored by University of Athens · Not applicable, Interventional, and Treatment
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.
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.
4,349 studies on the registry are indexed under Recurrence; 1,004 are open to participants now.
This study's planned enrollment of 60 is above the median of 50 across 3,429 interventional studies indexed under Recurrence.
Browse Recurrence studies →University of Athens is the lead sponsor of 139 studies on the registry; 19 are open to participants now.
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Exclusion Criteria:
lower fixed canine and canine retainer and upper removable Hawley (Intervention A)
Other: 0.028 bonded to canines
lower fixed canine to canine retainer and upper removable Hawley (Intervention B)
Other: 0.027 7-strand bonded to all 6
lower hawley-type and upper hawley removable retainer (Control)
Other: removable Hawley-type
lower fixed canine and canine retainer (0.028 stainless steel bonded to canines) and upper removable Hawley (Intervention A)
lower fixed canine to canine retainer (7-strand Twistflex 0.027 bonded to all six anterior teeth) and upper removable Hawley (Intervention B)
lower Hawley-type and upper Hawley removable retainer (Control)
Changes in Little's Irregularity Index in the mandible (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Intercanine width in the mandible (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Interpremolar width in the mandible (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Intermolar width in the mandible (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Arch length in the mandible (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Gingival Recessions on the lingual surfaces of the six lower anterior teeth
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Intercanine width in the maxilla (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Interpremolar width in the maxilla (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Intermolar width in the maxilla (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Arch length in the maxilla (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Changes in Overbite and Overjet (mm)
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Accidental bond failures of fixed retainers or breakages of removable ones
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Leveling or torque related problems of the lower anterior teeth
Time frame: 1 year in retention, 2 years in retention, 5 years in retention
Plan to share: Yes
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This study is status unknown, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.
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