ÖZET

Amaç:

Bu çalışmanın amacı, Twin Block (TWB) ve Kron Herbst apareyleri ile yapılan fonksiyonel tedavilerin dişlerin kök uzunlukları ve kök yüzey alanlarına etkisini karşılaştırmaktır.

Yöntemler:

Bu çalışmaya kırk hasta (12 erkek, 28 kız) dahil edilmiş olup, bunların yarısı paslanmaz çelik Kron Herbst apareyi ile (birinci molar, birinci ve ikinci premolarlara yerleştirilen kronlar ile) ve diğer yarısı ise TWB apareyi ile tedavi edilmiştir. Çalışmaya dahil edilen hastalardan panoramik ve sefalometrik filmler tedaviden önce (T1) ve fonksiyonel tedaviden sonra (T2) elde edilmiştir. İkinci ve üçüncü molar dişler dışındaki tüm üst ve alt dişler, panoramik filmler üzerinde ImageJ yazılımı (version 1,37, National Institutes of Health, Bethesda) kullanılarak analiz edilmiştir. Kök uzunluğu ve alan değerleri t-testi kullanılarak karşılaştırılmıştır.

Bulgular:

Grup içi karşılaştırmada, Kron Herbst grubundaki (12 yaş 7 ay ± 9 ay) sağ ve sol mandibular kesici dişler ve kaninlerde kök uzunluk değerlerinin anlamlı derecede azaldığı gözlendi. Bununla birlikte, TWB grubunda (11 yaş 1 ay ± 4 ay) sağ ve sol maksiller ikinci premolar ve sağ maksiller birinci premolarda kök uzunluğunda anlamlı bir artış gözlendi. Gruplar arası karşılaştırma, Kron Herbst grubunda TWB grubuna göre sağ maksiller premolar, sağ sol mandibular lateraller ve sol mandibular kaninlerde kök uzunluk değerlerinin anlamlı olarak azaldığını göstermiştir.

Sonuç:

Kron Herbst grubunda bulunan dişlerin kök rezorpsiyonu riski TWB grubundan daha fazlaydı. Sınıf II maloklüzyonlarının ortopedik düzeltmesinde, kontrendikasyon yoksa, kök gelişiminin desteklenmesi bakımından TWB cihazı tercih edilebilir.

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Sınıf II Malokluzyonun Tedavisinde Kullanılan İki Farklı Fonksiyonel Aygıtın Kök Uzunluğu ve Alanına Etkisinin Radyografik Olarak Karşılaştırılması

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References