title: Three-dimensional volumetric analysis after sinus grafts.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the augmentation volume of a sinus graft according to the time and graft materials based on cone-beam computed tomography (CBCT) scans and to assess efficacy of a bioabsorbable membrane.
  
  
  METHODS
  Fourteen patients were investigated, and volumetric analysis was performed using OnDemand 3DTM software (Cybermed, Seoul, Korea). CBCT scans were performed on patients before surgery, immediately after surgery, 6 months after surgery, and 1 year after surgery. Following this analysis, the volumetric data were compared with the actual grafted volumes. Bioabsorbable membranes were used in all patients to promote the protection of sinus membranes and to guide bone regeneration.
  
  
  RESULTS
  Overall, the average percent volume of graft material that remained 6 months after implantation was 82.0%, and the average percent volume of graft material that remained 1 year after surgery was 60.4%. These reductions in the volume of graft material from immediately after surgery until 6 months or 1 year after surgery were shown to be statistically significant (P = 0.002 and P < 0.001, respectively).
  
  
  CONCLUSIONS
  The slight differences observed among the data indicate that volumetric analysis performed using CBCT can provide highly accurate data. A significant difference was observed in volumetric change over time, but no significant differences were observed between materials. No significant relationship was observed between the resorption of grafted bone and the success rate.
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea.
authors: Eun-Sik
authors: ES
authors: Kim
authors: Seong-Yong
authors: SY
authors: Moon
authors: Su-Gwan
authors: SG
authors: Kim
authors: Hyun-Chun
authors: HC
authors: Park
authors: Ji-Su
authors: JS
authors: Oh
mesh_terms: D020341:Absorbable Implants; D000328:Adult; D000368:Aged; D064591:Allografts / Q000000981:diagnostic imaging / Q000637:transplantation*; D001857:Bone Matrix / Q000000981:diagnostic imaging / Q000637:transplantation; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003758:Dental Implantation, Endosseous / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D048091:Guided Tissue Regeneration / Q000295:instrumentation; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging* / Q000601:surgery; D008567:Membranes, Artificial; D008875:Middle Aged; D008903:Minerals / Q000627:therapeutic use; D059546:Sinus Floor Augmentation / Q000379:methods*; D016896:Treatment Outcome
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D008567:Membranes, Artificial; D008903:Minerals