[A discussion on three-dimensional digital imaging technology: application of cone-beam CT in endodontics].

Cone-beam CT (CBCT) is a relatively novel digital imaging technology to provide undistorted, three-dimensional information of teeth and surrounding tissues for aiding the diagnosis procedure and improving clinical decision-making. The use of CBCT in endodontics is widely and rapidly increasing. The aim of this review article is to introduce not only the current endodontic applications but also the limitations of CBCT such as artefacts and concerns on radiation dose. Furthermore, the evidenced-based guidelines on the reasonable application of CBCT in endodontics is also presented and re-considered. Clinicians should be more conscious neither to take CBCT as a substitute for two-dimensional radiography nor as a routine examination. With the continuous improvement of equipment and technology, it is urgent to establish and update guidelines in clinical practice. Endodontists should strengthen training, update knowledge, familiarize with CBCT technology and cooperate with radiologists to fulfill their diagnostic responsibilities.口腔锥形束CT是一种新型的三维数字影像技术，可提供牙齿及其周围组织的准确解剖信息，有助于临床诊断和治疗决策。本文结合研究文献和临床工作，分析锥形束CT在牙髓根尖周病诊治过程中的具体应用，提出对锥形束CT伪影、辐射剂量、解读责任等问题的思考。介绍相关指南性文件，促使临床医师认识到锥形束CT的局限性，其既非二维X线检查手段的替代，也不能作为临床常规检查手段，以期为锥形束CT的合理应用提供参考。.