Inclusion Criteria:  Patients who have a Primary molar with non-vital pulp. Adequate restorable tooth structure for further placement of stainless-steel crowns posttreatment. Inflammatory root resorption less than one half as assessed from radiographic evaluation with healthy contralateral tooth Teeth showing furcation radiolucency without involving the underlying tooth germ.  Exclusion Criteria:  Primary molars with pulpal floor perforation. Patients with a history of drug allergy to metronidazole, ciprofloxacin. Inflammatory root resorption more than one half as assessed from radiographic evaluation with healthy contralateral tooth.