The effect of varied force vector on type of tooth movement of maxillary anterior teeth during en masse retraction; randomized clinical trial | ||||
| Egyptian Orthodontic Journal | ||||
| Article 3, Volume 59, Issue 6, June 2021, Page 26-38 PDF (562.33 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eos.2021.78005.1017 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Tarek Nasreldin Yousry   1; Sherief Abdel-Haffiez1; Mohamed Mowafy2
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| 1Orthodontic Department, Alexandria University | ||||
| 2Alexandria University | ||||
| Abstract | ||||
| This randomized clinical trial was conducted on female patients in need of extraction of at least of two maxillary first premolars. The sample was divided into three groups; Group I: study group with Anterior retraction hook (ARH) of 9 mm, group II: study group with ARH of 6 mm, group III: study group with ARH of 3mm. Cone beam computed tomography were taken at two-time intervals for the whole sample; T1: Before the onset of en-masse retraction and T2: After the completion of en-masse retraction.Significant reduction in the inclination of anterior teeth as measured to the palatal plane had been recorded in three groups. Significant retraction of crowns and roots of anterior teeth had been recorded in all groups. Significantly lower amount of root movement had been recorded in group 2 and 3 compared to group 1. All groups showed significant intrusive movement with significantly less intrusion movement in group 2 and group 3 compared to group 1. | ||||
| Keywords | ||||
| En-masse retraction; mini-implants; force vector | ||||
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