title: Sinus floor elevation using osteotomes or piezoelectric surgery.
abstract: The aim of this paper is to describe a technique for sinus floor augmentation with a 1-step crestal approach where the residual bone is ≤ 7.5mm. 36 implants were installed in 25 patients in the atrophic posterior maxilla immediately after sinus floor elevation. Sinus floor elevation was performed with a crestal approach using either osteotomes and burs or piezosurgery. Standardized intraoral radiographs were taken prior to surgery and 1 year after surgery. The mean residual bone height was 5.61 mm (range 3-7.5mm). The mean gain of sinus elevation was 6.78 mm (range 3.5-10mm) at 1 year after surgery. Two patients dropped out of the study. Of the 23 patients completing the study, one implant failed, whilst the remaining 33 implants were stable 12 months after surgery (cumulative survival rate 97%). A statistically significantly higher bone height was achieved with tapered implants compared with cylindrical implants (P<0.05). No statistically significant differences were found in bone level using osteotomes or piezosurgery. Piezosurgery was considered to provide less discomfort for the patient and greater convenience for the surgeon.
authors.affiliation: Dept. Fixed and Implant Prosthodontics, Genoa University, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Baldi
authors.forename: M
authors.initials: M
authors.lastname: Menini
authors.forename: F
authors.initials: F
authors.lastname: Pera
authors.forename: G
authors.initials: G
authors.lastname: Ravera
authors.forename: P
authors.initials: P
authors.lastname: Pera
mesh_terms: D000328:Adult; D000368:Aged; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001284:Atrophy; D001857:Bone Matrix / Q000637:transplantation; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous / Q000379:methods; D015921:Dental Implants; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D008903:Minerals / Q000627:therapeutic use; D010027:Osteotomy / Q000295:instrumentation / Q000379:methods*; D011446:Prospective Studies; D011859:Radiography; D014465:Ultrasonics; D014732:Vibration
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; D015921:Dental Implants; D008903:Minerals