Three-dimensional evaluation of treatment results of the Alt-RAMEC and facemask protocol in growing patients
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ORIGINAL ARTICLE
Three-dimensional evaluation of treatment results of the Alt-RAMEC and facemask protocol in growing patients V. Sitaropoulou1 · H. N. Yilmaz2
· B. Yilmaz3 · N. Kucukkeles3
Received: 18 October 2019 / Accepted: 12 May 2020 © Springer Medizin Verlag GmbH, ein Teil von Springer Nature 2020
Abstract Purpose The aim of this retrospective study was to evaluate the skeletal, dental, and soft tissue effects of the alternating rapid maxillary expansions and constrictions (Alt-RAMEC) protocol combined with a facemask in prepubertal patients. Methods The study group (mean age 9.74 ± 1.46 years) consisted of 20 patients with class III malocclusion characterized by maxillary retrognathism. They were treated with a facemask for 7 months following a 9-week Alt-RAMEC protocol. Cone-beam computed tomography (CBCT) records and three-dimensional (3D) photographs taken before (T0) and after the protraction and retention period (T1) were evaluated. The study group was compared with a well-matched control group of 16 untreated patients (mean age 9.44 ± 0.79 years) with the same malocclusion. The records for the control group included cephalometric radiographs and 3D photographs. Results In the study group, significant forward movements of A point (3.49 mm), nasal (2.91 mm) and zygomatic bones were achieved. Intermolar, internasal, and interzygomatic widths increased. Soft tissue points followed the hard tissue movements, apart from b and pog. In the control group, A (0.97 mm), B (1.69 mm), Pog, and b points presented forward movement. Significant differences were found regarding the forward movement of the maxilla between the groups. Conclusion The Alt-RAMEC/facemask protocol was effective not only in the maxillary region but also in the midface.
Keywords Retrognathia · Cone-beam computed tomography · Malocclusion, Angle class III · Maxillary protraction · 3dMDface system
Dreidimensionale Auswertung der Behandlungsergebnisse des Alt-RAMEC- und Gesichtsmaskenprotokolls bei wachsenden Patienten Zusammenfassung Zweck Ziel dieser retrospektiven Studie war es, die skelettalen, dentalen und weichgewebigen Auswirkungen der alternierenden schnellen Gaumennahterweiterung und -konstriktion (Alt-RAMEC-Protokoll) in Kombination mit einer Gesichtsmaske bei präpubertären Patienten zu untersuchen.
Authors Contribution N. Kucukkeles constructed the idea. N. Kucukkeles and H.N. Yilmaz planned the methodology to reach the conclusion, and organized and supervised the course of the project and the writing of the article. V. Sitaropoulou and B. Yilmaz collected, managed and reported the data. All the authors analyzed the data and took responsibility in logical interpretation. N. Kucukkeles, H.N. Yilmaz and V. Sitaropoulou performed the writing of the manuscript. All the authors read and approved the final manuscript.
H. N. Yilmaz
[email protected] 1
Private Practice, Thessaloniki, Greece
2
Faculty of Dentistry, Department of Orthodontics, Marmara University, Istanbul, Turkey
3
Faculty of Dentistry, Department of Orthodonti
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