An interventional study of Quad-helix in Dental Crowding, sponsored by University of Helsinki. Active, not recruiting at 1 site in Finland. Open to participants aged 6 Years to 14 Years. Per ClinicalTrials.gov, last updated 2025-07-08.
Sponsored by University of Helsinki · Not applicable, Interventional, and Treatment
Aim of the study is to compare treatment duration and effects of orthodontic treatment of dental crowding between treatments started at different stages of mixed dentition phase. The randomized controlled trial study will be conducted in a public health care center.
88 studies on the registry are indexed under Crowding; 22 are open to participants now.
This study's planned enrollment of 60 is above the median of 36 across 74 interventional studies indexed under Crowding.
Browse Crowding studies →University of Helsinki is the lead sponsor of 133 studies on the registry; 19 are open to participants now.
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Exclusion Criteria:
Treatment started in the early mixed dentition phase
Device: Quad-helix
Treatment started in the late mixed dentition phase
Device: Quad-helix
Fixed orthodontic appliance
Treatment time
Duration of treatment
Time frame: Up to 36 months
Treatment burden
Number of orthodontic appliances used
Time frame: Up to 48 months
Alignment of dental arches
Occlusal end result of the treatment
Time frame: up to 48 months
Plan to share: No
No publications or documents are linked to this record.
This study is active, not recruiting, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.
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