[Comparative clinical studies on the use of porous hydroxylapatite (HAP) and decalcified freeze-dried bone (DFB) in the treatment of deep intra-alveolar periodontal bone defects].

In 12 cases a systematical periodontal therapy involved surgical treatment (mod. Widman flap operation). 16 intrabony defects with more than 6 mm pocket depth measured at the beginning of periodontal therapy were filled with porous hydroxyl- (Interpore 200) as well as decalcified freeze dried bone grafts. For judgement of the therapeutic success plaque index, sulcus bleeding index, mobility of teeth treated by surgical methods, pocket depth, attachment level, and x-ray documentation were used before the operation and after 6 month maintenance therapy.