mandibular first molar loss.
Conditions
Interventions
Intervention 1: Intervention group: two G2 Jeil 1.4 ?8 miniscrews will be placed in the mesial and distal of the second premolar tooth. Then uprighting is done with the help of a rectangular loop made
Sponsors
Mashhad University of Medical Sciences
Eligibility
Sex/Gender
All
Age
15 Years to 25 Years
Inclusion criteria
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
Exclusion criteria: Patient non-cooperation Mini screw failure once
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 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
| Measure | Time frame |
|---|---|
| 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. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public ContactDr.fahimeh farzanegan
Mashhad University of Medical Sciences
Outcome results
None listed