Czelej-Górski J, Rózyło T K, Rózyło-Kalinowska I
Department of Dental and Maxillofacial Radiology, Medical University of Lublin.
Ann Univ Mariae Curie Sklodowska Med. 2001;56:111-8.
Lesions in hard tissues of teeth can be detected on radiograms only when there exists considerable decrease in mineralisation. By means of digital radiography the diagnostics of dental pathologies becomes more precise and objective. The aim of the paper was the radiodensitometric evaluation of chronic fibrous periapical changes. The material comprised 308 digital intraoral radiograms of teeth with periapical changes among which there were chosen the cases of clinically confirmed chronic fibrous periapical inflammations of endodontically untreated teeth. All radiograms were analysed in the Digora Soredex digital radiography system in gray scale, in full colour and using the tomosynthesis function. The linear measurements of root densities were carried out at the distance of 1 mm from radiological apices while the measurements of alveolar bone at the distance of 2 mm from it. Twenty-five teeth without evident periapical changes formed the control group. There were found significantly lower densities of roots and alveolar bone in the group of chronic fibrous periapical lesions in comparison with the control group. A characteristic feature of chronic fibrous periapical changes is the density of the root of an affected tooth that is higher than in acute inflammation and at the same time lower than in the control group. The radiodensitometry proved to be useful in evaluation of chronic fibrous periapical changes.
只有当牙齿硬组织中的矿化显著降低时，才能在X光片上检测到病变。借助数字放射摄影技术，牙科病理学的诊断变得更加精确和客观。本文的目的是对慢性纤维性根尖周病变进行放射密度测定评估。材料包括308张有根尖周病变的牙齿的数字化口腔内X光片，从中选取了经临床确诊的未经牙髓治疗牙齿的慢性纤维性根尖周炎症病例。所有X光片均在Digora Soredex数字放射摄影系统中以灰度、全彩和使用断层合成功能进行分析。在距放射学根尖1毫米处进行牙根密度的线性测量，在距其2毫米处进行牙槽骨的测量。25颗无明显根尖周病变的牙齿组成对照组。与对照组相比，慢性纤维性根尖周病变组的牙根和牙槽骨密度明显较低。慢性纤维性根尖周病变的一个特征是患牙牙根的密度高于急性炎症时，同时低于对照组。放射密度测定法被证明在评估慢性纤维性根尖周病变方面是有用的。
