A Comparative Volumetric Study of Symphysis Donor Defects, Unfilled or Filled with Bone Substitute

作者：Schwartz Arad Devorah^*; Toti Paolo; Levin Liran; Laviv Amir; Guidetti Franco; Sbordone Ludovico

来源：Clinical Implant Dentistry and Related Research, 2013, 15(5): 684-691.

DOI：10.1111/j.1708-8208.2011.00394.x

• autogenous bone graft
• bone substitute
• dental implants
• donor site
• harvesting
• mandibular symphysis
• onlay graft
• symphysis revisiting

Objectives:Background Intraoral autogenous bone grafts are a convenient source of bone in reconstruction of the residual ridge before dental implant placement. Purpose: The aim of this study was to evaluate bone volume of symphysis donor defects filled with bone substitute compared with unfilled symphysis donor defects. Patients, Materials and Methods: The study included 26 patients who underwent either alveolar ridge reconstruction or maxillary sinus elevation. Two groups were studied: symphyseal donor defects filled with bone substitute and unfilled symphyseal donor defects. Pre- and postoperative volumetric variables were determined using computed tomography scans and the software program SimPlant (R) (Materialise Dental Italia, Roma, Italy). Results: At 6 months postsurgery, the filled donor defects exhibited a significant increase in bone volume compared with unfilled donor defects (97.7% and 73.4%, respectively). At 18 months postsurgery, volume of unfilled donor defects was reevaluated with no significant increase in bone volume. Conclusions: Six months following block harvesting procedure, filled donor defects maintained bone volume, while unfilled donor sites generated defects that cannot achieve full regeneration; even not 18 months postblock harvesting.

• 出版日期2013-10