The effect of different loading times on loosening of miniscrews in orthodontic patients
Phase 2
- Conditions
- Orthodontic Anchorage Procedures.Adjustment and management of other implanted devices
- Registration Number
- IRCT201311069569N2
- Lead Sponsor
- Vice chancellor for research of Tabriz university of medical sciences
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete
- Sex
- All
- Target Recruitment
- 180
Inclusion Criteria
A treatment plan to insert miniscrews on both sides of maxilla between the second premolar and the first molar for retraction of anterior teeth.
Exclusion criteria: Any disease compromising bone quality like osteoporosis, osteomalasia, and osteopetrosis.
Exclusion Criteria
Not provided
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Mobility in the miniscrews. Timepoint: Three weeks after miniscrew placement, six weeks after miniscrew placement, ten weeks after miniscrew placement and then every 4 weeks. Method of measurement: By placing a calibrated probe on the miniscrew and lateral movement, if mobility is greater than 0.5 millimeter, the miniscrew is designated mobile.;Mobility in two groups less than 16 years old and older than 16 years old. Timepoint: Three weeks after miniscrew placement, six weeks after miniscrew placement, ten weeks after miniscrew placement and then every 4 weeks. Method of measurement: By placing a calibrated probe on the miniscrew and lateral movement, if mobility is greater than 0.5 millimeter, the miniscrew is designated mobile.
- Secondary Outcome Measures
Name Time Method Amount of insertion torque of the miniscrews. Timepoint: during insertion of miniscrews. Method of measurement: Torque measurement device (Orthonia, JEIL Company).