“…11,12 Local drug tetracycline HCl 25 mg with surgical flap are very effective with removing local irritation, reducing gingival inflammation, reducing pocket depth, improves clinical attachment, can control local infection, and prevent the formation of new lesions. 15,16 The tetracycline group exhibits broad spectrum antibacterial effects including both gramnegative and aerobic and anaerobic bacteria. The tetracycline group includes antibiotics that are bacteriostatic, with low pH and anticholagenase activity can increase antibacterial ability so as to increase gingival attachment.…”