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Antibiotics most commonly used in stage 3 and stage 4 periodontal disease (effective against mixed oral flora): Amoxicillin Amoxicillin : 10 mg/kg q12h. Amoxicillin-Clavulanate Clavulanate : 12.5 mg/kg q12h (approved for use in US). Clindamycin Clindamycin : 5.5 mg/kg q12h or 11 mg/kg q24h.
I shared above the protocol of surgery it might be due to missing in suturing or in opening or ligating hernial ring.
It is indication of recurrence