Can you tell what's the best choice of antibiotic for treating periodontitis and gingivitis to be perscribed for a patient?

Which pathogen?: The choice depends on several variables, including severity and duration of the infection. The best choice would result from clinical culturing to see which antibiotic is the most effective but that is rarely done. For the great majority of patients presenting with periodontal conditions, systemic antibiotics are not indicated. Instead, treatment should focus on mechanical disruption of plaque.

None needed: Gingivitis and periodontitis are chromic diseases. Antibiotics are used for acute problems we use antibiotics when we regenerate lost bone in periodontal disease see a periodontist to treat your problem treating gingivitis takes good cleanup to get the gums healthy again and you learning how to do effective oral hygiene.

No, because.....: Gingivitis is treated by using proper tooth brushing and flossing techniques on a regular basis after a thorough cleaning by your dentist. Periodontitis is a more advanced stage of gum disease and requires more extensive scaling and root planing and definitive surgical procedures when necessary. No antibiotic will cure or prevent gum disease without proper oral hygiene.