title: Alveolar bone preservation following tooth extraction: a perspective of clinical trials utilizing osseous grafting and guided bone regeneration.
abstract: Based on data from the authors' three clinical trials that focused on the role exerted by various regenerative materials and techniques in preserving alveolar ridge dimensions following tooth extraction, there is evidence to support the use of nonresorbable and resorbable membranes in combination with a closed-socket approach. There also is evidence to support a higher predictability of the results with resorbable membranes compared with nonresorbable membranes because the latter can become exposed to the oral environment during healing. A combination of bioactive glass and calcium sulfate using an open-socket approach is of marginal benefit in preserving alveolar ridge dimensions following tooth extraction. More research is necessary on combining osseous graft/guided bone regeneration using a closed-socket approach, on assessing the quality of bone present in the previous extraction socket following various preservation techniques, and on how effectively preserved/regenerated bone supports dental implants.
authors: Division of Associated Clinical Specialties, University of California-Los Angeles School of Dentistry, CHS 63048 Periodontics, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA. pauloc@dentnet.dent.ucla.edu
authors: Paulo M
authors: PM
authors: Camargo
authors: Vojislav
authors: V
authors: Lekovic
authors: João
authors: J
authors: Carnio
authors: E Barrie
authors: EB
authors: Kenney