Nihat KILIÇ, Hüsamettin OKTAY, Gülhan ÇATAL, Mevlüt ÇELİKOĞLU

DISTINGUISHING HARD AND SOFT TISSUE FACIAL MORPHOLOGY AMONG CLASS I AND CLASS III CHILDREN: A CEPHALOMETRIC ASSESSMENT

ABSTRACT Aim: To assess the sagittal soft and hard soft tissue morphology of growing Class III patients in comparison with a Class I control subjects. Materials and Methods: Forty-one female children with Class III malocclusion and 30 Class I female children were included in the study. Eight linear and 6 angular measurements were made on lateral cephalograms to evaluate soft tissue and skeletal characteristics. Results: The subjects with Class III malocclusion showed a retrusive maxilla (A-y distance, 48.52±2.53) and upper lip (Ss-y distance, 64.14±3.26), a protrusive mandible (B-y distance, 56.15±5.49) a prominent chin (Pog’-y distance, 70.65±6.87), retroclined lower incisors (IMPA, 87.14±5.68), and increased vertical dimensions (SN-GoMe, 36.49±5.29) compared to control subjects. Conclusions: Our findings indicated that soft and hard tissue characteristics of Class III subjects are distinct from Class I subjects in the middle region and lower third of the face. Orthopedic traction of mid-face arguably started earlier as a first treatment protocol to obtain balanced facial profile in Class III subjects. Keywords: Soft tissue profile, cephalometry, Class III malocclusion, Class I occlusion SINIF I VE SINIF III İLİŞKİLİ ÇOCUKLARDAKİ SERT VE YUMUŞAK DOKU YÜZ MORFOLOJİSİ FARKLILIKLARI: SEFALOMETRİK İNCELEME ÖZ Amaç: Bu çalışmanın amacı Sınıf III ilişkiye sahip ço- cukların sert ve yumuşak doku yüz morfolojisini Sınıf I ilişkiye sahip kontrol bireyleri ile karşılaştırmaktır. Gereç ve Yöntem: Bu çalışma Sınıf III maloklüzyonlu 41 ve Sınıf I oklüzyonlu 30 bayan çocuğu içermektedir. Bu bireylerin sert ve yumuşak doku karakteristiklerinin incelenmesi için sefalometrik filmler üzerinde 8 linear ve 6 açısal ölçüm yapılmıştır. Bulgular: Kontrol grubundaki bireylerle karşılaştırıldı- ğında, Sınıf III maloklüzyonlu bireylerin retrüziv üst çe- ne ve üst dudak, protruziv bir alt çene ve belirgin çene ucu, retrokline alt kesici dişler ile artmış dik yön boyut- lara sahip oldukları görülmüştür. Sonuç: Bu çalışmanın bulguları, Sınıf III bireylerin or- ta ve alt yüz bölgesindeki sert ve yumuşak doku yüz karakterlerinin Sınıf I bireylerden farklı olduğunu gös- termektedir. Sınıf III bireylerde dengeli bir yüz profile elde etmek için, maksiller protraksiyon ilk tedavi proto- kolü olarak daha erken başlatılmalıdır. Anahtar Kelimeler: Yumuşak doku profili, sefalometri, Sınıf III maloklüzyon, Sınıf I oklüzyon

Anahtar Kelimeler:

Soft tissue profile, cephalometry, Class III malocclusion

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