The aim of this review is to compare several methods which has been used in root canal morphology since 20th century,and introduce the development of Micro-CT in endodontics.

• 本文对20世纪关于根管形态主要研究方法的发展历程作了简要系统的回顾和比较,并阐述了新型的研究工具-显微CT在这一领域的应用进展。