title: Comparison of two kinds of bovine bone in maxillary sinus augmentation: a histomorphometric study.
abstract: OBJECTIVE
  The purpose of this study was to compare the histomorphometric from sinus augmentation with calcium-phosphate nanocrystal-coated bovine bone (Biocera) and anorganic bovine bone matrix (Bio-Oss).
  
  
  METHODS
  Bilateral maxillary sinus augmentations were performed on 5 patients with delayed placement of implants. The lateral bony window was created using a piezoelectric saw, and the sinus membrane was elevated to make a new compartment. Bio-Oss was grafted in one sinus as the control group and Biocera was grafted in the opposite sinus as the test group. The bony window was repositioned over the bone graft. In all cases, samples were taken for biopsy at the time of implant placement, 6 to 8 months after the grafting procedure. Independent t tests were used to examine between-group differences.
  
  
  RESULTS
  None of the 5 patients had complications during healing period. Histomorphometrically, the Bio-Oss group showed 28.46% (±5.28%) of newly formed bone. Biocera group showed 29.94% (±8.72%) of newly formed bone. Newly formed bone along inner surface of repositioned bony window area showed more mature and dense bone structure than new bone formed along bone graft.
  
  
  CONCLUSIONS
  This study revealed that both bovine bone grafts were considered as suitable bone graft materials for maxillary sinus augmentation.
authors.affiliation: *Assistant Professor, Department of Dentistry and Oral and Maxillofacial Surgery, Catholic University Hospital of Daegu, Daegu, Korea. †Professor, Department of Dentistry and Oral and Maxillofacial Surgery, Catholic University Hospital of Daegu, Daegu, Korea. ‡Private Practice, Busan, Korea. §Private Practice, Jeonju, Korea.
authors.forename: Jee-Won
authors.initials: JW
authors.lastname: Moon
authors.forename: Dong-Seok
authors.initials: DS
authors.lastname: Sohn
authors.forename: Jeung-Uk
authors.initials: JU
authors.lastname: Heo
authors.forename: Jin Sun
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000818:Animals; D001857:Bone Matrix / Q000637:transplantation*; D001861:Bone Regeneration; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation / Q000379:methods*; D002417:Cattle; D017886:Durapatite / Q000627:therapeutic use; D006801:Humans; D008443:Maxillary Sinus / Q000473:pathology / Q000601:surgery*; D059745:Piezosurgery; D059546:Sinus Floor Augmentation / Q000379:methods*
chemical_list: D018786:Bone Substitutes; D017886:Durapatite