The effect of two different force magnitudes on maxillary posterior segment intrusion in adult patients with skeletal open bite using temporary anchorage devices : A randomized clinical trial /
تأثير قوتين مختلفتين على إغراس الشق الخلفي من الفك العلوي للمرضي البالغين ذوي العضة العظمية المفتوحة باستخدام أجهزة الإرساء المؤقتة : عينة سريرية عشوائية
Heba Elsayed Kamel Akl ; Supervised Amr Mohamed Abouelezz , Fouad Aly Elsharaby , Amr Ragab Elbeialy
- Cairo : Heba Elsayed Kamel Akl , 2018
- 263 P. : facsimiles ; 25cm
Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Orthodontics
Objectives: The aim of this study was to compare the effects of two different force magnitudes on maxillary posterior segment intrusion in treatment of adult subjects with skeletal open bite. Materials and methods: Twenty patients were recruited from the outpatient clinic at the Orthodontic Department, Faculty of Dentistry, Cairo University. Segmented levelling and alignment was done for the maxillary posterior segments bilaterally till reaching 19*25 stainless steel arch-wire. Two infra-zygomatic and two palatal mini-screws were inserted for each patient, a full head cone beam computed tomographic image (CBCT) was taken. Intrusion was then initiated by means of nickel titanium closed coil springs, using 200 and 400g of force for the comparator and the intervention groups respectively. After a duration of 6 months, a second CBCT was taken for the evaluation of the intrusion phase. Results: There was statistically significant results for posterior teeth intrusion in both the comparator and the intervention groups, with no difference between the two, with significant anterior open bite closure. There was also insignificant tipping of posterior teeth during the intrusion phase for both groups with no difference between both groups
Adult patients Maxillary posterior segment intrusion Two different force magnitudes