The cement – enamel junction (CEJ) gains a growing interest in clinical dentistry, due to an increasing number of idiopathic tooth resorption leading to the inevitable loss of permanent dentition. Therefore, in this research study, we investigated healthy and under resorption teeth to verify junctions’ morphology in relation to the resorption process, its initiation, and propagation. Using light and scanning electron microscopy we examined the three types of CEJ: 1) coronal cementum, 2) abutment) and 3) the gap between cementum and enamel. With energy-dispersive X-ray spectroscopy (EDX) we analyzed the Ca and P concentration along the CEJ border. The study indicated the strict correlation between the gap junction and tooth resorption, due to the dentine exposure to the oral environment.

由于越来越多的特发性牙齿吸收导致永久性牙列的不可避免的丧失，水泥 - 牙釉质接合部 (CEJ) 在临床牙科中越来越受到关注。因此，在这项研究中，我们调查了健康和吸收不足的牙齿，以验证与吸收过程、其启动和传播相关的连接处形态。我们使用光学和扫描电子显微镜检查了三种类型的 CEJ：1) 冠状牙骨质，2) 基台) 和 3) 牙骨质和牙釉质之间的间隙。我们使用能量色散 X 射线光谱 (EDX) 分析了沿 CEJ 边界的 Ca 和 P 浓度。该研究表明，由于牙本质暴露于口腔环境，间隙连接和牙齿吸收之间存在严格的相关性。