Effects of maxillary molar distalization with Zygoma-Gear Appliance

Abstract

Maxillary molar distalization without anchorage loss can be achieved in a short time with ZGA.

Zygoma-Gear Apareyi ile Maksiller Molar Distalizasyonunun Maksiller Üçüncü Molar Dişler Üzerine Etkileri

“…Nur ve arkadaşlarına (19) göre maksiller molarların distalizasyon miktarı, 5,21 ayda 4,37±2,15 mm dir ve molarların distal hareket oranı aylık 0,84 dür. Bunun tersine, bizim çalışmamamızda maksiller molarların distal hareket oranı aylık 0,5 mm'dir.…”

“…Bizim çalışmamızdaki hastaların ortalama yaşı, 18,3±1,8'dir ve distalizasyon süresi, 7,9±3,1 aydır. Fakat Nur ve arkadaşları (19), ZGA apareyinin etkilerini 15,87±1,09 yıl yaşındaki hastalarda değerlendirmişlerdi ve onların distalizasyon süresi, 5,21 aydır. Aylık diş hareket miktarı, iskeletsel ankraj destekli intraoral mekaniklerinkinden daha azdır ve aylık 0,66 -1,2 mm arasında değişmektedir Maxillary third molars moved distally 1.0±0.9 mm (p< 0.05), with a distal tipping of -7.5±5.5° (p< 0.01).…”

“…However, the authors (19) did not investigate the effects of maxillary molar distalization on maxillary third molar. Thus, we also investigated the changes in the angular and position of the maxillary third molars due to the distalization force with ZGA.…”

“…The appliance used in the present study was firstly produced by Nur et al (9,19) The authors (19) evaluated the dentoalveolar, skeletal and soft tissue effects of the ZGA when used for bilateral distalization of the maxillary molars and they found that maxillary molar distalization without anchorage loss could be achieved in a short time regardless of the age of the patients included to their study. However, the authors (19) did not investigate the effects of maxillary molar distalization on maxillary third molar.…”

“…The mean age of the patients in our study was 18.3±1.8 years and thus the duration of the distalization was 7.9±3.1 months. However, Nur et al (19) evaluated the effects of ZGA on patients aged 15.87±1.09 years and their distalization period occurred 5.21 months. This amount of tooth movement per month was less than those of intraoral mechanics supported with a skeletal anchorage, ranging from 0.66 to 1.2 mm per month (10,12,20,21).…”