Üç Boyutlu Stereofotogrametri
Özet
Üç boyutlu (3B) stereofotogrametri, bir cismin farklı açılardan çekilen görüntülerini birleştirerek radyasyonsuz ve non-invaziv bir yöntemle 3B yumuşak doku modeli elde edilmesini sağlayan, günümüz ortodonti ve yüz estetiğinde önemli bir teknolojidir. Sistem, yüksek hızlı dijital kameraları sayesinde 1,5 milisaniyede görüntü yakalayarak hasta hareketinden kaynaklanan bozulmaları engeller ve kooperasyonu zor olan hastalarda büyük avantaj sağlar. Klinik olarak ortodontik tedavi planlamasında, büyüme ve gelişimin takibinde, kraniyofasiyal asimetrilerin ve deformitelerin incelenmesinde aktif olarak kullanılmaktadır. Yüksek cihaz maliyetleri, geniş kurulum alanı gereksinimi, hassas kalibrasyon prosedürleri ve gölgeli/karanlık alanlardaki görüntü distorsiyonları gibi dezavantajları bulunsa da klinik doğruluğu ve güvenilirliği oldukça yüksektir. Pazarda aktif, pasif veya hibrit teknikler kullanan 3dMD, Canfield Vectra ve DI3D gibi sistemler öne çıkmaktadır. Bu teknoloji yalnızca yumuşak doku kaydı yapabildiğinden, bütüncül bir kraniyofasiyal modelleme için CBCT (Konik Işınlı Bilgisayarlı Tomografi) ve dijital dental modellerle kombine edilmesi en ideal yaklaşımdır. Gelecekte, dinamik kayıt imkanı sunan 4 boyutlu sistemlerin yaygınlaşmasıyla ortodontik tanı ve tedavi süreçlerine katkısının daha da artacağı öngörülmektedir.
Three-dimensional (3D) stereophotogrammetry is an important technology in today's orthodontics and facial aesthetics, enabling the acquisition of 3D soft tissue models via a radiation-free and non-invasive method by combining images of an object captured from different angles. Thanks to its high-speed digital cameras, the system captures images in 1.5 milliseconds, preventing distortions caused by patient movement and providing a major advantage in patients with difficult cooperation. Clinically, it is actively used in orthodontic treatment planning, monitoring growth and development, and examining craniofacial asymmetries and deformities. Although it has disadvantages such as high device costs, large installation space requirements, sensitive calibration procedures, and image distortions in shaded or dark areas, its clinical accuracy and reliability are considerably high. Validated systems utilizing active, passive, or hybrid techniques such as 3dMD, Canfield Vectra, and DI3D stand out in the market. Since this technology can only record soft tissue, combining it with CBCT (Cone Beam Computed Tomography) and digital dental models is the most ideal approach for holistic craniofacial modeling. In the future, with the proliferation of 4D systems offering dynamic recording capabilities, it is anticipated that its contribution to orthodontic diagnosis and treatment processes will increase even further.
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