Palatal implant versus zygoma plate anchorage for distalization of maxillary posterior teeth

This study aimed to examine the skeletal, dental, and soft tissue effects of the implant-supported pendulum (ISP) and the zygoma anchorage system (ZAS) used for the distalization of maxillary posterior teeth. Among 30 patients showing Angle class II malocclusion, 15 patients with a mean age of 14.3±...

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Bibliographic Details
Published in:European journal of orthodontics 2013-08, Vol.35 (4), p.507-514
Main Authors: Kaya, Burçak, Sar, Cagla, Arman-Özçirpici, Ayça, Polat-Özsoy, Omür
Format: Article
Language:English
Subjects:
Adolescent
Adult
Bone Plates
Cephalometry
Dentistry
Female
Humans
Incisor - surgery
Male
Malocclusion, Angle Class II - surgery
Maxilla - surgery
Molar - surgery
Orthodontic Anchorage Procedures - instrumentation
Overbite - surgery
Palate - surgery
Tooth Movement Techniques - instrumentation
Zygoma - surgery
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Summary:This study aimed to examine the skeletal, dental, and soft tissue effects of the implant-supported pendulum (ISP) and the zygoma anchorage system (ZAS) used for the distalization of maxillary posterior teeth. Among 30 patients showing Angle class II malocclusion, 15 patients with a mean age of 14.3±1.6 years and treated with ISP were included in the first group; 15 patients with a mean age of 14.7±2.5 years and treated with ZAS were included in the second group. The predistalization and postdistalization lateral cephalograms were analysed. Statistical evaluation was carried out using SPSS. Point A and upper incisors protruded in the ISP group, retruded in the ZAS group. Upper posterior teeth were distalized in both groups, but more in the ZAS group. Significant differences were observed between the groups for the sagittal movements of Point A, incisors, and posterior teeth. Overbite decreased in the ISP group, overjet decreased in the ZAS group, upper and lower lips retruded only in the ZAS group. Both methods provided absolute anchorage for distalization of posterior teeth, but the skeletal and soft tissue outcome and distalization obtained was greater in the ZAS group. Both methods can be used as alternatives to extraoral traction and conventional molar distalization appliances with different patient requirements.
ISSN:0141-5387
1460-2210
DOI:10.1093/ejo/cjs059