Zygomatic anchorage for molar intrusion in adult open-bite patients
Marzouk, E., Abdallah, E., El-Kenany, W., Fata, M. (2012). Zygomatic anchorage for molar intrusion in adult open-bite patients. EKB Journal Management System, 41(June 2012), 1-21. doi: 10.21608/eos.2012.78828
Eiman Marzouk; Essam Abdallah; Walid El-Kenany; Mohamed Fata. "Zygomatic anchorage for molar intrusion in adult open-bite patients". EKB Journal Management System, 41, June 2012, 2012, 1-21. doi: 10.21608/eos.2012.78828
Marzouk, E., Abdallah, E., El-Kenany, W., Fata, M. (2012). 'Zygomatic anchorage for molar intrusion in adult open-bite patients', EKB Journal Management System, 41(June 2012), pp. 1-21. doi: 10.21608/eos.2012.78828
Marzouk, E., Abdallah, E., El-Kenany, W., Fata, M. Zygomatic anchorage for molar intrusion in adult open-bite patients. EKB Journal Management System, 2012; 41(June 2012): 1-21. doi: 10.21608/eos.2012.78828

Zygomatic anchorage for molar intrusion in adult open-bite patients

Egyptian Orthodontic Journal
Article 1, Volume 41, June 2012, June 2012, Page 1-21  XML PDF (4.26 MB)
Document Type: Original Article
DOI: 10.21608/eos.2012.78828
View on SCiNiTO View on SCiNiTO
Authors
Eiman Marzouk* 1; Essam Abdallah1; Walid El-Kenany1; Mohamed Fata2
1Department of Orthodontics, Faculty of Dentistry, Alexandria University.
2Department of Maxillofacial and plastic Surgery, Faculty of Dentistry, Alexandria University.
Abstract
Objective: The aim of this study is to investigate the effectiveness of the mini-plate zygomatic anchorage for intrusion of maxillary molars in adult skeletal anterior open-bite patients. Materials and Methods: The study group was composed of 10 anterior open-bite patients with posterior dentoalveolar excess. Placement of the mini-plates in the zygomatic buttress was carried out under local anaesthesia. After placement of a double TPA, a closed Ni-Ti coil spring was placed bilaterally between the hook of the mini-plate just mesial and distal to the first molar buccal tube applying intrusive force of 450g per side. Lateral cephalograms and posteroanterior radiographs were taken before intrusion (T1: post upper segmental leveling) and after intrusion (T2). The cephalometric films were measured and compared. Results: The mean amount of accomplished molar intrusion was 3.1mm ± 0.74mm, with a rate of 0.36mm per month ± 0.08mm per month and a bite closure of 6.55mm±1.83mm. Mandibular autorotation followed the molar intrusion, SNB and SN-Pog angles significantly increased while the ANB, MP-SN angle and N-S-Gn angle significantly decreased. There was no significant buccal tip in the right and left molars. Conclusion: Zygomatic anchorage can be used effectively for skeletal open-bite correction through posterior dento-alveolar intrusion.
Keywords
Zygomatic anchorage; open-bite treatment; miniplates
Statistics
Article View: 134
PDF Download: 216