New attachment formation as the result of controlled tissue regeneration

摘要: Abstract The present study was designed to examine whether new attachment forms on root surfaces previously exposed plaque by preventing the oral epithelium and gingival connective tissue from participating in process of healing following treatment. 4 roots each 3 monkeys were used as test units while contralateral teeth served controls. A surgical procedure first expose coronal half buccal surfaces. Plaque allowed accumulate for a period 6 months. Subsequently, soft flaps raised carefully scaled planed. crowns control resected mucosal Haps repositioned sutured such way that properly covered. Immediately prior suturing, membranes (Millipore® filter or Gore-tex® membrane) placed over denuded order prevent granulation reaching during healing. sacrificed months later. jaws removed histological sections including their periodontal tissues produced. New cementum with inserting collagen fibers observed both roots. However, exhibited considerably more than surfaces, indicating placement membrane favoured repopulation wound area adjacent cells originating ligament.