The practicability of different preparation of mandibular molar restored by modified endocrown with intracanal extension: Computational analysis using finite element models. - Qimei Gong; Luo Huang; Junpan Luo; Yuejiao Zhang; Qingzhen Meng; Jingjing Quan; Zhongchun Tong (Comput. Methods Programs Biomed., 2022)