Effect of modified tandem traction bow appliance on airway size

Yıl 2019, , 47 - 52, 01.05.2019

Emine Kaygısız , Merve Kurnaz Sema Yüksel , Tuba Tortop

https://doi.org/10.17214/gaziaot.452130

Cited By: 2

Öz

Objective: To investigate the effect of modified
tandem traction bow appliances (MTTBA) on pharyngeal airway dimensions in Class
III malocclusion treatment.

Materials and Method: The material of this study
consisted of pre-treatment (T1) and post-treatment (T2) lateral cephalometric
radiographs of 20 subjects with skeletal and dental Class III malocclusion (8
females and 12 males; mean chronologic age; 10 years and 1 month) who had been
treated with the MTTBA appliance. Elastics that exerted a force of 400-500 g were worn between the
upper splint and the traction bow with an angle of 35-40°. The average
treatment time was 12 months. Linear and area measurements were done to
determine the pharyngeal airway dimensions. Kolmogorov-Smirnov and paired t-tests
were used for the statistical analysis, and p<0.05 was considered as statistically
significant.

Results: Treatment changes indicated significant
forward-movement of the maxilla (p<0.001) and significant increases in
effective lengths of the maxilla and the mandible (p<0.001). The mandible
showed a clockwise rotation because of the increase in mandibular plane angle
(p<0.001). A significant increase in the oropharyngeal area (OA; p<0.05),
and an insignificant increase in the nasopharyngeal area (NA) was found. Hyoid
bone moved anterior and inferior insignificantly.

Conclusion: A favorable improvement was observed
in the oropharyngeal area by the MTTBA appliance that was used in the treatment
of Class III malocclusion.

Anahtar Kelimeler

Angle Class III, Airway management, malocclusion, orthodontic appliances, orthodontics

Modifiye tandem traksiyon yüz arkı apareyinin hava yolu boyutuna etkisi

Öz

Amaç: Sınıf III
maloklüzyon tedavisinde kullanılan modifiye tandem traksiyon yüz arkı (MTTYA)
apareyinin faringeal hava yolu boyutları üzerine olan etkisini incelemekti.

Gereç ve
Yöntem: Çalışmanın materyalini, iskeletsel ve dişsel Sınıf III
maloklüzyona sahip, MTTYA apareyi ile tedavi edilmiş olan 20 bireyin (8 kadın
ve 12 erkek; yaş ortalaması 10 yıl 1 ay) tedavi öncesi (T1) ve sonrası (T2)
lateral sefalometrik radyografileri oluşturdu. MTTYA apareyinin üst plağından
yüz arkına oklüzal düzlemle 35-40° açı yapacak şekilde 400-500 g. kuvvet uygulayan
elastikler asıldı. Ortalama 12 aylık tedavi uygulandı. Faringeal havayolu boyut
ve alan ölçümleri yapıldı. İstatistiksel analizde, Kolmogorov-Smirnov ve
eşleştirilmiş t testleri kullanıldı ve p<0.05 değeri anlamlı olarak kabul
edildi.

Bulgular: Tedavi ile
maksillada ileri yönde harekette (p<0.001) ve efektif maksilla ve mandibula
boyutlarında anlamlı artışlar ortaya çıktı (p<0.001). Mandibular düzlem
eğiminin artışı (p<0.001) ile mandibulada posterior rotasyon saptandı.
Orofaringeal alanda (OA) anlamlı düzeyde (p<0.05) ve nazofaringeal alanda
(NA) anlamlı olmayan düzeyde artışlar gözlendi. Hyoid kemik, anlamlı olmayan
düzeyde öne ve aşağıya yer değiştirdi.

Sonuç: Sınıf III
malokluzyon tedavisinde kullanılan MTTYA apareyi uygulaması ile orofaringeal
havayolu alanında olumlu yönde değişiklik gözlendi.

Anahtar Kelimeler

Angle Sınıf 3, havayolu yönetimi, maloklüzyon, ortodontik gereçler, ortodonti

Kaynakça

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