The Clinical Evaluation of Two Different Film Thicknesses of Clear Overlay Retainer.
Not Applicable
Completed
- Conditions
- Retention
- Interventions
- Device: retainer
- Registration Number
- NCT02618330
- Lead Sponsor
- Yafen Zhu
- Brief Summary
The aims of this study were to compare health related quality of life, comforts degrees，retention effectiveness, and failure rates as well as survival times between two clear overlay retainers with different thicknesses, thus to provide basis information regarding appropriate selections of the thickness of clear overlay retainers.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 80
Inclusion Criteria
- Patients after active orthodontic treatment;
- Must be healthy without systemic and oral diseases;
- The central incisors, canines and first molars of both upper and lower arches must be existed;
- Agreed to the trial and signed informed consent forms, either by themselves, or their parents.
Exclusion Criteria
- Oral habits such as bruxism and clenching,
- Do not accept this type of retainers
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description retainer: 0.75-mm-thick film retainer - retainer: 1.00-mm-thick film retainer -
- Primary Outcome Measures
Name Time Method Survival times via recording to the patients' re-visit one year
- Secondary Outcome Measures
Name Time Method Retention effectiveness assessed according to 3D models one year SF-36 scale for Quality of life one month Comfort degrees assessed through Visual Analog Score one month