2B YUMUŞAK DOKU ANALİZLERİNİN 3B STEREOFOTOGRAMETRİ İLE DOĞRULUĞUNUN DEĞERLENDİRİLMESİ

Year 2025, Volume: 13 Issue: 3, 600 - 615

Sabahattin Bor , Fırat Oğuz , Nisanur Kolcuoğlu Demir

https://doi.org/10.33715/inonusaglik.1641405

Abstract

Bu çalışma, ortodontik analizlerde doğruluk ve tutarlılığı değerlendirmek amacıyla, lateral sefalometrik radyografiler, profil fotoğrafları ve 3B stereofotogrametri (3dMD) ile elde edilen yumuşak doku ölçümlerini karşılaştırmayı amaçlamaktadır. Kraniyofasiyal deformite veya travma öyküsü bulunmayan 34 hasta seçilmiştir. Lateral sefalometrik görüntüler WebCeph, profil fotoğrafları GIMP ve 3B görüntüler 3dMD Vultus yazılımında analiz edilmiştir. Nazolabial açı (NLA), labiomental açı (LMA) ve yüz konveksite açısı (Conv-A) ölçülmüş, ayrıca 3dMD Vultus ve WebCeph’te doğrusal ölçümler yapılmıştır. İntra- ve inter-rater güvenilirliği, Sınıf İçi Korelasyon Katsayısı (ICC) ile değerlendirilmiştir. ANOVA ve post hoc testleri ile yapılan analizlerde, 3dMD’de ölçülen NLA değerleri diğer yöntemlerden anlamlı derecede yüksek bulunmuştur (p<0.05). LMA değerleri arasında fark saptanmamış, Conv-A değerleri GIMP ve WebCeph arasında farklılık göstermiştir (p<0.05). WebCeph ve 3dMD arasındaki doğrusal ölçümler yüksek uyum sergilemiştir (ICC>0.85). Sonuç olarak, 2B yöntemler klinik olarak kabul edilebilir olsa da 3B stereofotogrametri, kritik yumuşak doku analizlerinde daha yüksek doğruluk sağlamaktadır.

Keywords

2B lateral sefalometri , 3B görüntüleme , Doğruluk , Yumuşak doku analizi

EVALUATION OF THE ACCURACY OF 2D SOFT TISSUE ANALYSES WITH 3D STEREOPHOTOGRAMMETRY

Abstract

This study aimed to compare soft tissue measurements derived from different imaging methods—lateral cephalometric radiographs, profile photographs, and three-dimensional (3D) stereophotogrammetry (3dMD) to evaluate the accuracy and consistency in orthodontic analysis. Thirty-four patients with no craniofacial deformities or a history of trauma were selected. Lateral cephalometric images were analyzed using WebCeph, profile photographs using GIMP, and 3D images with 3dMD Vultus software. Measurements included the nasolabial angle (NLA), labiomental angle (LMA), and facial convexity angle (Conv-A), as well as linear measurements obtained from 3dMD Vultus and WebCeph images. Intra- and inter-rater reliability were assessed using the Intraclass Correlation Coefficient (ICC). ANOVA and post hoc tests revealed that NLA values measured with 3dMD were significantly higher than those obtained with other methods (p<0.05). No significant differences were found in LMA values, while Conv-A measurements showed a statistically significant difference between GIMP and WebCeph (p<0.05). Linear measurements between WebCeph and 3dMD showed strong agreement (ICC>0.85). In conclusion, although two-dimensional (2D) methods provide clinically acceptable measurements, 3D stereophotogrammetry offers higher accuracy, particularly for critical soft tissue analyses. Based on these findings, it can be concluded that 3D imaging techniques were recommended for orthodontic and maxillofacial studies requiring precise soft tissue evaluation. Based on these findings, the null hypothesis regarding the nasolabial angle was rejected, while the hypotheses for the other angular and linear measurements were accepted.

Keywords

2D lateral cephalometry , 3D imaging , Accuracy , Soft tissue analysis

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