Minas, Nova Hambersom In vitro preliminary study to evaluate the capability of Er,Cr:YSGG laser in posterior teeth root-canal preparation with step-back technique. [electronic resource] - Lasers in medical science Jan 2009 - 7-12 p. digital Publication Type: Journal Article ISSN: 0268-8921 Standard No.: 10.1007/s10103-007-0507-1 doi Subjects--Topical Terms: CrownsHumansIn Vitro TechniquesLasers, Solid-StateMicroscopy, Electron, ScanningRoot Canal Preparation--methods