This lecture will present the biologic background and surgical aspects of contour augmentation at implants placed in the esthetic zone. This surgical technique was developed in the late 1990s using the guided bone regeneration (GBR) technique and is most often used in early implant placement postextraction. The goal of contour augmentation is a thick facial bone wall to support esthetic soft tissue contours. The technique is characterized by the use of two bone fillers: locally harvested autogenous bone chips to enhance new bone formation during the initial phase of bone healing combined with a low-substitution bone filler such as demineralized bovine bone matrix (DBBM) particles, which are primarily used for long-term stability of contour augmentation. The two fillers are covered with a resorbable collagen membrane to provide a temporary barrier. The surgeries are completed with primary wound closure using a tension-free adaptation of the wound margins. The step-by-step procedure for various clinical situations will be shown with a number of case reports and documented by clinical and radiographic studies. The most recent cases include CBCT documentation of the presence or absence of a facial bone wall.
Daniel Buser, PD, Dr med dent, is a professor and chairman of the Department of Oral Surgery and Stomatology at the School of Dental Medicine at the University of Bern in Switzerland. He has spent sabbatical years at Harvard University, Baylor College of Dentistry, and the University of Melbourne and has served as president of various academic associations, including the European Association for Osseointegration, the Swiss Society of Oral Implantology, and the Swiss Society of Oral Surgery and Somatology. He is currently president of the Swiss Implant Foundation and of the International Team for Implantology (ITI). Dr Buser has received several scientific awards by professional organizations, and his main research areas include bone regeneration around endosseous implants, surface technology, and guided bone regeneration. He lectures widely internationally and has authored and co-authored more than 250 publications, many of them in leading dental and biomaterials journals, and several textbooks, including two ITI Treatment Guides.
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