Aim: The aim of the present study was to assess the recontamination time of root canals filled with ProTaper gutta-percha master point using the active lateral condensation and the single-cone techniques. Methods: Fifty premolars. after biomechanical preparation. were randomly divided into six groups according to the obturation technique and the diameter of the gutta-percha point. https://safeersappliancers.shop/product-category/bosch-bfl553ms0b-serie-4-900-watt-microwave-built-in-stainless-steel/