Cerrahi Destekli Hızlı Üst Çene Genişletmesi Sonrası YumuşakDoku Değişikliklerinin Aksiyal Konik Işınlı Bilgisayarlı TomografiGörüntüleri Üzerinde Değerlendirilmesi

Amaç: Cerrahi destekli hızlı üst çene genişletmesi (SARME) (surgically assisted rapid maxillary expansion) ortodontide ana tedavi seçeneklerinden biridir. SARME’nin hastaların yüzleri ve yumuşak dokuları üzerinde göz ardı edilemeyecek klinik etkileri olduğu ortadadır. Bu çalışmanın amacı, konik ışınlı bilgisayarlı tomografinin (KIBT) aksiyel görüntülerinde SARME sonrası elde edilen sert doku genişlemesi ve yumuşak doku projeksiyonu arasındaki korelasyonu incelemektir. Gereç ve Yöntemler: Bu retrospektif çalışmaya transvers maksiller yetmezliği olan ve yaş ortalaması 22,18±1,64 yıl olan 16 hasta (9 kadın, 7 erkek) alındı. Hastalara Hyrax maksiller ekspansiyon apare uygulandı ve KIBT görüntüleri SARME öncesi (T0) ve 6 ay sonra (T1) olacak şekilde çekildi. Yumuşak ve sert doku değişiklikleri, In Vivo Dental Yazılımı kullanılarak cerrahi öncesi ve cerrahi sonrası aksiyel KIBT görüntülerinde dijital olarak değerlendirildi. Bulgular: Sert doku genişlemesinin ortalama değeri ön bölge için 4,50±1,38 mm ve arka bölge için 3,92±1,31 mm idi. Bu değerler arasındaki fark anlamlı değildi (p>0,05). Her iki tarafta yumuşak doku projeksiyonları ile ön ve arka sert doku genişleme değerleri arasında korelasyon yoktu (p=0,509; r=0,178) (p=0,424; r=0,102). Sonuç: SARME sonrasında yumuşak doku projeksiyonu ile sert doku genişleme miktarları arasında bir ilişki yoktu. Ayrıca ön ve arka sert doku genişleme miktarları arasındaki fark istatistiksel olarak anlamlı değildi.

Evaluation of Soft Tissue Projection on Axial Cone Beam Computed Tomography Images After Surgically Assisted Rapid Maxillary Expansion

Objective: Surgically assisted rapid maxillary expansion (SARME) is one of the major treatment objectives in orthodontics. It is very obvious that SARME has non-negligible clinical impacts on the facial soft tissues of patients. This study aimed to investigate the correlation between hard tissue expansion and soft tissue projection after SARME on axial cone beam computed tomography (CBCT). Materials and Methods: Sixteen patients (9 women, 7 men) with a mean age of 22.18±1.64 years and having a transverse maxillary deficiency were enrolled in this retrospective study. A tooth borne Hyrax maxillary expander was applied to the patients and CBCT images were taken before (T0) and 6 months after (T1) SARME. Soft and hard tissue changes were superimposed and evaluated digitally on presurgical and post-surgical axial CBCT images by using In Vivo Dental Software. Results: The mean value of the hard tissue expansion was 4.50±1.38 mm for the anterior region and 3.92±1.31 mm for the posterior region. The difference between these values was not significant (p>0.05). There was no correlation between soft tissue projections (p=0.509; r=0.178) and anterior and posterior hard tissue expansion values (p=0.424; r=0.102) on both sides. Conclusion: There was no correlation between soft tissue projection and hard tissue expansion values after SARME. In addition, the difference between the anterior and posterior hard tissue expansion values was not statistically significant.

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