title: Sinus bone graft using new alloplastic bone graft material (Osteon)-II: clinical evaluation.
abstract: OBJECTIVE
  The objective of this study was to clinically evaluate the use of Osteon as a sinus bone graft material and to measure the loss of sinus bone graft volume and marginal bone loss around the implants.
  
  
  METHODS
  Thirty-two implants were placed in 16 patients after maxillary sinus bone grafting. In 7 patients, maxillary sinus bone graft was performed first and 15 implants were placed after 4 months; in 9 patients, 17 implants were placed simultaneously with maxillary sinus bone grafting. Based on medical records and radiographs, intraoperative and postoperative complications were examined, and at 1 year after the placement of the upper fixture, the success rate of implants, peri-implant soft tissue condition, and the marginal bone loss were evaluated. Additionally, the sinus bone graft volume loss was evaluated by comparing the residual alveolar bone height of the preoperative maxillary sinus floor with that immediately after the operation and after 1 year.
  
  
  RESULTS
  Regarding intraoperative complications, perforation of the maxillary sinus membrane occurred in 6 cases (37.5%), and after surgery maxillary sinusitis developed in 2 cases. During the healing period, 1 implant failed in osseointegration. At the last follow-up observation, none of cases showed marginal bone loss of >1 mm and a 96.9% success rate was seen. The follow-up observation period after placement of the superstructure was 12-30 months (average 15). Between the simultaneous placement group and the delayed placement group, marginal bone loss showed no statistically significant difference (P = .455). In the entire patient group, the volume of sinus bone graft loss did not correlate with marginal bone loss (P = .568). Preoperative alveolar bone height was 0.8-8.8 mm (mean 4.64), postoperative alveolar bone height was 12-21.8 mm (mean 17.67), and the alveolar bone height 1 year after the operation was 11.2-20.8 mm (mean 16.78). Between the group with perforation of the maxillary sinus membrane and the group without, no difference in marginal bone loss was observed (P = .628). Additionally, no difference in the volume of sinus bone graft resorption between the two groups was observed (P = .970).
  
  
  CONCLUSIONS
  It was concluded that Osteon is suitable for use in sinus graft application.
authors.affiliation: Department of Conservative Dentistry, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: Ji-Hyun
authors.initials: JH
authors.lastname: Bae
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Kim
authors.forename: Su-Gwan
authors.initials: SG
authors.lastname: Kim
authors.forename: Pil-Young
authors.initials: PY
authors.lastname: Yun
authors.forename: Jae-Seung
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000139:chemically induced; D000540:Alveolar Ridge Augmentation / Q000379:methods; D001862:Bone Resorption / Q000139:chemically induced; D018786:Bone Substitutes / Q000009:adverse effects / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000009:adverse effects / Q000627:therapeutic use; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D004338:Drug Combinations; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006882:Hydroxyapatites / Q000009:adverse effects / Q000627:therapeutic use; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D016348:Osseointegration / Q000187:drug effects* / Q000502:physiology; D016896:Treatment Outcome
chemical_list: D018786:Bone Substitutes; D002130:Calcium Phosphates; D015921:Dental Implants; D004338:Drug Combinations; D006882:Hydroxyapatites; C485817:beta-tricalcium phosphate