A comparative volumetric study of symphysis donor defects, unfilled or filled with bone substitute

Clin Implant Dent Relat Res. 2013 Oct;15(5):684-91. doi: 10.1111/j.1708-8208.2011.00394.x. Epub 2011 Oct 18.

Abstract

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® (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.

Keywords: autogenous bone graft; bone substitute; dental implants; donor site; harvesting; mandibular symphysis; onlay graft; symphysis revisiting.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Alveolar Ridge Augmentation / methods*
  • Bone Substitutes*
  • Female
  • Humans
  • Male
  • Maxillary Sinus / surgery*
  • Middle Aged
  • Tissue Donors*

Substances

  • Bone Substitutes