title: Early implant survival in posterior maxilla with or without beta-tricalcium phosphate sinus floor graft.
abstract: OBJECTIVE
  The sinus lift procedure provides a way to increase the amount of available bone and the placement of longer implants. The aim of this study was to evaluate and compare the survival rates of implants inserted in the posterior maxilla (without sinus lift) to simultaneous implant insertion with sinus lift.
  
  
  METHODS
  Seventy maxillary sinuses in 62 patients were augmented by beta-tricalcium phosphate and 121 implants were inserted into these augmented sinuses (study group) and 136 implants were inserted in the posterior maxilla in 65 patients (control group). Follow-up times were 29.8 and 32.3 months for the study and control groups, respectively.
  
  
  RESULTS
  One implant in the study group and 1 implant in the control group failed. All other implants in both groups were functioning well without any significant clinical finding. Implant survivals were 99.17% in the study group and 99.26% in the control group.
  
  
  CONCLUSIONS
  Simultaneous implant insertion and sinus lift with beta-tricalcium phosphate is a safe surgical procedure, and survival rates of implants inserted in the augmented sinus were similar to those of implants inserted in the posterior maxilla without sinus lift.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Baskent University, Ankara, Turkey. suckan@yahoo.com
authors.forename: Sina
authors.initials: S
authors.lastname: Uckan
authors.forename: Kagan
authors.initials: K
authors.lastname: Deniz
authors.forename: Emre
authors.initials: E
authors.lastname: Dayangac
authors.forename: Kenan
authors.initials: K
authors.lastname: Araz
authors.forename: B Handan
authors.initials: BH
authors.lastname: Ozdemir
mesh_terms: D000328:Adult; D000368:Aged; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001672:Biocompatible Materials / Q000627:therapeutic use; D018786:Bone Substitutes / Q000627:therapeutic use*; D002130:Calcium Phosphates / Q000627:therapeutic use*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation / Q000601:surgery; D008297:Male; D008437:Maxilla / Q000601:surgery; D008443:Maxillary Sinus / Q000601:surgery*; D008875:Middle Aged; D013516:Oral Surgical Procedures, Preprosthetic / Q000379:methods*; D010027:Osteotomy / Q000379:methods; D015996:Survival Rate; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D002130:Calcium Phosphates; D015921:Dental Implants; C485817:beta-tricalcium phosphate