Gao, Xiao-jie [Analysis of vertical root fracture with two different techniques of root canal preparation]. [electronic resource] - Shanghai kou qiang yi xue = Shanghai journal of stomatology Jun 2012 - 321-4 p. digital Publication Type: Journal Article ISSN: 1006-7248 Subjects--Topical Terms: HumansRoot Canal PreparationRoot Canal TherapyStainless SteelTooth Root