Injury, poisoning and certain other consequences of external causes. S00-S09
Conditions
Interventions
Intervention 1: intervention group: at first cession T-loop will be activated for first mandibular molar protraction. at same time irradiation will be done at mocusa of left first molar in mesiobuccal
Treatment - Devices
Placebo
intervention group: at first cession T-loop will be activated for first mandibular molar protraction. at same time irradiation will be done at mocusa of left first molar in mesiobuccal, mid buccal, di
control group: at first cession after T-loop activation on both side of patient, on left first molar we will put laser tip on the same points of right first molar but will not push the pedal. we will
Sponsors
Orthodontics research center
Eligibility
Sex/Gender
All
Age
16 Years to 25 Years
Inclusion criteria
Inclusion criteria: Inclusion criteria: 1- all patients had the same vertical growth pattern-normal pattern- which was verified by evaluating Jaraback index and sum of Bjork on their lateral cephalometric images (Jaraback index 65-70 % and sum of Bjork 390°-400°). 2- There was no missing tooth in the lower arch. 3- Based on treatment plane, every patient need mandibular second premolar extraction on both sides to treat open bite dentally or correct molar relationship. 4- All patients signed the informed contest to participate in this study. Patients with tooth missing, horizontal growth pattern and any previous second premolar extraction were excluded.
Exclusion criteria
Exclusion criteria:
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Amount of mandibular first molar movement. Timepoint: at the begining of study, at the end of first , second and third month. Method of measurement: milimeter measurement with gauge on dental cast. | — |
Countries
Iran (Islamic Republic of)
Contacts
Public Contactsepideh rezapour gavareshki
orthodontic department of shiraz dental school
Outcome results
None listed