Cone Beam Computed Tomography In Dentistry

Yıl 2009, Cilt: 3 Sayı: 2, 346 - 351, 01.07.2009

Sara Samur

Öz

Dental imaging is an important diagnostic adjunct to the clinical assessment of dental patient. After introduction of panoromic radiography in 1960s, dental radiology had become progress and enabled clinicians to see jaw and maxillofacial structures with a single radiography. However, two dimensional 2D images with intraoral and extraoral procedures of three dimensional 3D maxillofacial region have some drawbacks such as magnification and superimposition. To eliminate this drawbacks 3D imaging technics have been developed. Subsequent period digital imaging, computed tomography CT , magnetic resonance imaging MRI , positron emission tomography PET and cone beam computed tomography CBCT had been developed. After the introduction of CBCT which is specifically dedicated to imaging the maxillofacial region, accessing and image reconstruction of 3D data have became more avaliable in dentistry. CBCT has facilitated diagnosis and have a role for image guidance of operative and surgical procedures through the advanced software it has. CBCT is capable of providing clear, submilimeter resolution images at shorter scan times, lower patient dose and lower cost compared with medical CT. Increasing avalibility of this technology provides the clinicians 3D representation of maxillofacial region ranging from facilitate diagnosis to image guidance of operative and surgical procedures

Anahtar Kelimeler

Maxillofacial radiology, CBCT applications

Dişhekimliğinde Cone Beam Bilgisayarlı Tomografi

Öz

Dental görüntüleme, diş hekimliğinde hastaların klinik olarak değerlendirilmesine yardım eden önemli bir diagnostik faktördür. 1960’larda panoramik radyografinin tanıtılmasıyla diş hekimliği radyolojisi ilerleme kaydetmiş, tek bir filmde çenelerin ve maksillofasiyal yapıların görüntülenmesi mümkün olmuştur. Bununla birlikte, üç boyutlu maksillofasiyal bölgenin intraoral ve ekstraoral tekniklerle elde edilen iki boyutlu görüntüleri magnifikasyon ve süperimpozisyon gibi istenmeyen özelliklere sahip oldukları için üç boyutlu görüntüleme teknikleri geliştirilmiştir. İlerleyen dönemlerde; dijital görüntüleme, bilgisayarlı tomografi BT , manyetik rezonans görüntüleme MRG , pozitron emisyon tomografi PET ve cone beam bilgisayarlı tomografi CBCT keşfedilmiş, maksillofasiyal bölgenin üç boyutlu olarak görüntülenmesi mümkün olmuştur. Özellikle maksillofasiyal bölgenin görüntülenmesine yönelik olan CBCT’nin tanıtılmasıyla diş hekimliğinde üç boyutlu verilere ulaşım ve görüntü düzenlenmesi kolaylaşmıştır. CBCT, sahip olduğu ileri yazılım özellikleri sayesinde diagnozu kolaylaştırmış, operatif ve cerrahi girişimlerde görüntü rehberliği taşımıştır. Medikal bilgisayarlı tomografilerle karşılaştırıldığında; net, submilimetrik çözünürlüğe sahip görüntülerin daha kısa ışınlama süreleri ve dozlarıyla daha düşük maliyetli olarak elde edilmesini sağlar. Bu teknolojinin hızla yaygınlaşması uygulayıcılara maksillofasiyal bölgede diagnozdan görüntü rehberliği ile birlikte planlanan operatif ve cerrahi işlemlere kadar geniş bir yelpazede üç boyutlu temsillerin yapılabilmesine olanak tanımaktadır

Anahtar Kelimeler

Maksillofasiyal radyoloji, CBCT uygulamaları

Kaynakça

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