Dental Which of the following drugs is most frequently used in treating refractory periodontitis, including localized juvenile periodontitis? A Metronidazole and Amoxicillin B Tetracycline C Ciprofloxacin D Penicillin 💡 Explanation Which of the following drugs is most frequently used in treating refractory periodontitis, including localized juvenile periodontitis? ✓ Correct Answer: A. Metronidazole and Amoxicillin