Augmentation Techniques – the Basis of Aesthetic

Class II defects Class II indicates that a facial bone deficit of 1–3 mm is present. A variety of factors can give rise to hard- tissue deficits after tooth loss. A common cause is the occurrence of subacute inflammatory processes in endodontically treated teeth with vertical root fractures (Figures E1–E4). When the defect was exposed six weeks after tooth extraction, a well-circumscribed three-dimen- sional bone defect became evident both in the vestibular portion of the bone lamella and circularly in the area of the implant shoulder. Sufficient amounts of autologous bone to aug- ment minor defects can be readily harvested from the tuberosity, preferably with a chisel or Luer rongeur (Figure T2). EDI Case Studies 4 Fig. E1 Longitudinal root fracture, subacute symptoms, buccal bone deficit on probing. Fig. E2 Facial bone defect. Fig. E3 Bone defect at the level of the implant shoul- der (vertical/hori- zontal). Fig. E4 Defect treat- ment with autologous bone graft, bone substi- tute (Bio-Oss) and resorbable collagen mem- brane (BioGide). Fig. T2 Harvesting of autologous bone from the tuberosity with a Luer rongeur has a low degree of invasiveness and yields enough material to augment minor defects.