Gunes, B The effect of cervical preflaring on the apical debris extrusion of single or multiple rotary Ni-Ti files. [electronic resource] - Nigerian journal of clinical practice Apr 2020 - 510-514 p. digital Publication Type: Journal Article ISSN: 1119-3077 Standard No.: 10.4103/njcp.njcp_599_19 doi Subjects--Topical Terms: HumansIncisor--surgeryNickelRoot Canal Preparation--instrumentationTitaniumTooth Apex--surgery