Objective: Detecting vertical root fractures (VRFs) can be challenging in dentistry due to their subtle and often concealed nature. This study aimed to assess the impact of varying resolutions and delayed scanning times of photostimulable phosphor plates on the diagnosis of VRFs. Can different resolutions and/or delayed scan times enhance the diagnosis of VRFs? Material and Methods: In this in vitro study, forty extracted single-rooted premolar teeth were utilized. The crowns of all teeth were removed, and root canals were prepared. The teeth were divided into 2 groups: 20 study teeth with VRFs and 20 teeth without VRFs. VRFs were created using an Instron machine. All tooth roots were positioned in the premolar region of a dry human mandible and fixed with wax. Subsequently, periapical radiographs were taken using a parallel technique. Radiographs were scanned at 4 different times post-exposure: immediately, 30 minutes later, 2 hours later, and 4 hours later, and at three different resolutions: high speed, high resolution, and super high resolution. Statistical analyses were conducted using IBM SPSS statistics 26.0. Results: Intra- and interobserver agreement exhibited substantial to almost perfect ranges of agreement. Statistically significant differences were not observed in the diagnosis of VRFs when comparing different resolutions and scanning times. Conclusion: Varying resolutions and/or delayed scan times did not improve the diagnosis of VRFs. In clinical practice, a comprehensive detection of VRFs might necessitate a combination of different imaging techniques, immediately scanning, optimizing resolution settings, and clinical assessment.
Keywords: Diagnostic imaging; root canal preparation; in vitro study
Amaç: Diş hekimliğinde, dikey kök kırıklarının (DKK) teşhisi, kırıkların belirgin olmayan ve genellikle net olarak görüntülenemeyen niteliklerinden dolayı zor olabilir. Bu çalışma, fotostimüle edilebilir plakaların farklı çözünürlüklerinin ve gecikmeli tarama zamanlarının DKK'lerin teşhisi üzerindeki etkisini değerlendirmeyi amaçlamaktadır. Farklı çözünürlükler ve/veya gecikmeli tarama zamanları, DKK'lerin teşhisini kolaylaştırabilir mi? Gereç ve Yöntemler: Bu in vitro çalışmada, 40 çekilmiş tek köklü premolar diş kullanıldı. Tüm dişlerin kronları minesement sınırından kesilerek, uzaklaştırıldı ve kök kanal preparasyonları yapıldı. Dişler, 20 DKK'li çalışma grubu ve 20 DKK'siz kontrol grubu olmak üzere 2 gruba ayrıldı. DKK'leri, bir Instron makinesi kullanılarak oluşturuldu. Tüm diş kökleri, kuru bir insan mandibulasının premolar bölgesine yerleştirildi, mum ile sabitlendi. Ardından, paralel teknik kullanılarak periapikal radyograflar çekildi. Radyograflar, ışınlamadan hemen sonra, 30 dk sonra, 2 saat sonra ve 4 saat sonra olmak üzere 4 farklı zaman diliminde ve yüksek hız, yüksek çözünürlük ve süper yüksek çözünürlük olmak üzere 3 farklı çözünürlükte tarandı. İstatistiksel analizler IBM SPSS statistics 26.0 kullanılarak gerçekleştirildi. Bulgular: Gözlemci içi uyum, önemli derecede yüksek; gözlemciler arası uyum neredeyse mükemmel olarak gözlendi. Farklı çözünürlüklerde ve farklı tarama zamanlarında, DKK teşhisinde istatistiksel olarak anlamlı farklılıklar gözlemlenmedi. Sonuç: Farklı çözünürlükler ve/veya gecikmeli tarama zamanları, DKK'lerin teşhisini iyileştirmedi. Klinik uygulamada, DKK'lerin kapsamlı bir şekilde teşhisi, farklı görüntüleme tekniklerinin kombinasyonunu, ışınlamadan hemen sonra taramayı, çözünürlük ayarlarını optimize etmeyi ve klinik değerlendirmeyi gerektirebilir.
Anahtar Kelimeler: Tanısal görüntüleme; kök kanalı şekillendirmesi; in vitro çalışma
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