title: Combined use of bone grafts and implants in the severely resorbed maxilla. Postoperative evaluation by computed tomography.
abstract: Combined horseshoe-shaped iliac bone grafts and Brånemark fixtures were used to rehabilitate patients with severely resorbed maxillae. Twenty patients were followed-up by computed tomography (CT) examination with axial slices to assess the fixture sites and to study the changes in height and width of the bone graft 3 weeks and 3, 6, 12, and 24 months postoperatively. The mean height of the bone graft at the 3-week postoperative examination was 8.2 mm; after 2 years the mean value had decreased to 6.2 mm. The height reduction occurred mainly between the 3-month and 1-year examinations. The mean width of the bone graft at the 3-week postoperative examination was 12.2 mm, and it decreased to 8.6 mm after 2 years. Most of the width reduction took place during postoperative months 1-3. From 1 year after the grafting procedure, the rate of reduction of both height and width was very low.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University of Umeå, Sweden.
authors.forename: E
authors.initials: E
authors.lastname: Nyström
authors.forename: P E
authors.initials: PE
authors.lastname: Legrell
authors.forename: A
authors.initials: A
authors.lastname: Forssell
authors.forename: K E
authors.initials: KE
authors.lastname: Kahnberg
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000601:surgery*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D016025:Bone Transplantation; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging* / Q000601:surgery; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000601:surgery; D008875:Middle Aged; D015203:Reproducibility of Results; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants