Evaluation of the efficiency of the new miniscrew assisted method of protracting the mandibular second molars
Not Applicable
Recruiting
- Conditions
- mandibular first molar loss.
- Registration Number
- IRCT20230407057841N1
- Lead Sponsor
- Mashhad University of Medical Sciences
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Recruiting
- Sex
- All
- Target Recruitment
- 20
Inclusion Criteria
Orthodontic patients who have lost their mandibular first molars and the second molars are tilted to the edentulous area and need protraction.
15-25 years old
The buccolingual thickness of the bone in the edentulous area should be more than two thirds of the buccolingual thickness of the mesial root of the second molar.
Absence of systemic problems affecting bone metabolism
No smoking
Not taking drugs affecting bone metabolism
Exclusion Criteria
Patient non-cooperation
Mini screw failure once
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Mandibular second molar protraction speed. Timepoint: 6 months after molar protraction. Method of measurement: Comparison of the distance of the maximum convexity of the second molar and second premolar teeth in the initial and final opg photos.
- Secondary Outcome Measures
Name Time Method The change of mandibular second molar angle with the mandibular border (in OPG images) before and after treatment. Timepoint: 6 months after protraction. Method of measurement: OPG photos prepared.;Changes in rotation relative to the mandibular occlusion line (in study models) before and after treatment. Timepoint: 6 months after protraction. Method of measurement: OPG photos prepared.;The amount of bone and its density in the mesial second molar (in CBCT images) before and after treatment. Timepoint: 6 months after protraction. Method of measurement: CBCT photos prepared.