IRCT20230407057841N1 IRCT 2023-11-28 Mashhad University of Medical Sciences Evaluation of the efficiency of the new miniscrew assisted method of protracting the mandibular second molars Evaluation of the efficiency of the new miniscrew assisted method of protracting the mandibular second molars in patients referred to the orthodontic department 2023-06-11 anticipated 20 Complete https://irct.ir/trial/69554 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: The type of study is a clinical trial, which includes two control groups and patients. After the patients enter this study, they are randomly assigned to one of two intervention or control groups. The randomization of these patients will be simple randomization. Simple randomization is done by randomizer.org. Also, to conceal each person's chosen group, we write the relevant groups on paper and put them inside the envelope. Numbers are printed on the envelope according to the numbers generated by randomizer.org. Then people randomly pick one of the envelopes and are assigned to the group written inside the envelope. N/A mandibular first molar loss. 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 of 17 ⁕25 mil TMA wire, which is placed in the screw slots, and after placing a T.Loop made of 17 ⁕25 mil TMA wire along with a 40 degree β bend and a bend Antirotation 30 degrees teeth are brought forward. Intervention 2: Control group: Conventionally, after the initial alignment and placing of the steel wire 25x19, a mini screw G2 Jeil 1.4 ⁕8 is placed between the 3rd and 4th teeth and connected to the 4th tooth with a ligature wire. We use Ni-Ti push coils to straighten the second molar. Then, this tooth is connected to tooth 4 with a Ni-Ti close coil spring from the buccal (bracket) and lingual (lingual button) sides with a force of 100 grams. Lingual force is applied to prevent the rotation of the second molar. No - There is not a plan to make this available Justification or reason for not sharing IPD is there is no further information