Mikrogeorgis Georgios, Eirinaki Eleni, Kapralos Vasileios, Koutroulis Andreas, Lyroudia Kleoniki, Pitas Ioannis
Department of Endodontology, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Department of Endodontics, Faculty of Dentistry, University of British Columbia, Vancouver, BC, Canada.
Aust Endod J. 2018 Dec;44(3):286-291. doi: 10.1111/aej.12240. Epub 2017 Dec 11.
Vertical root fractures are commonly associated with root-filled teeth. Diagnosis is challenging because the clinical signs are not completely pathognomonic, and conventional periapical radiography is often unreliable. Digital subtraction radiography (DSR) is able to detect small radiographic changes between two successive radiographs by subtracting out consistent radiographic elements. Its use could possibly assist in the diagnostic procedure. Four cases are presented to demonstrate the potential use of DSR in the detection of vertical root fractures in endodontically treated teeth. After the digital subtractions had been carried out, a dark line in the body of the roots was distinguishable, raising the possibility of the presence of a vertical root fracture. The use of contrast enhancement and pseudocolouring techniques assisted with the diagnosis of vertical root fractures. DSR proved to be a useful diagnostic tool for the detection of vertical root fractures in these four clinical cases.
垂直根折通常与根管治疗后的牙齿相关。诊断具有挑战性，因为临床体征并非完全具有特征性，并且传统根尖片往往不可靠。数字减影放射成像（DSR）能够通过减去一致的放射影像元素来检测两张连续放射影像之间的微小放射学变化。其应用可能有助于诊断过程。本文展示了4例病例，以证明DSR在检测根管治疗后牙齿垂直根折方面的潜在用途。进行数字减影后，牙根主体内可分辨出一条黑线，增加了存在垂直根折的可能性。使用对比增强和伪彩色技术有助于垂直根折的诊断。在这4例临床病例中，DSR被证明是检测垂直根折的有用诊断工具。
