Anti-Bacterial Agents 1 Barium Sulfate 1 Barium sulfate 1 Biofilms 1 Ciprofloxacin 1 Dental Pulp 1 Dental Pulp Necrosis 1 Dosage Forms 1 Dose-Response Relationship, Drug 1 Drug Resistance, Bacterial 1 Enterococcus faecalis 1 Humans 1 Metronidazole 1 Regenerative Endodontics 1 Root Canal Irrigants 1 Zirconium 1 antibiotic resistance 1 antiinfective agent 1 barium sulfate 1 biofilm 1 biofilms 1 biomedical and dental materials 1 ciprofloxacin 1 dose response 1 double antibiotic paste 1 drug dosage form 1 drug effect 1 endodontic regeneration human 1 immature tooth 1