title: Maxillary Sinus Elevation Surgery with ChronOS and Autogenous Bone Graft: Analysis of Histometric and Volumetric Changes.
abstract: The aim of this study was to compare the bone resorption rate and histometry of ChronOS, a beta-tricalcium phosphate (β-TCP), mixed with autogenous bone grafts (1:1) with that of autogenous bone grafts alone in maxillary sinus elevation surgery. A total of 12 maxillary sinuses were grafted with an autogenous bone graft (control group) and 9 with ChronOS mixed with an autogenous bone graft (test group). Postoperative cone beam computed tomography (CBCT) was used to measure the initial graft volume after 15 days (T₁), and 6 months later another CBCT scan was performed to evaluate the final graft volume (T₂) and determine the graft resorption rate. The resorption outcomes were 45.7% ± 18.6% in the control group and 38.3% ± 16.6% in the test group (P = .17); the bone formation rate was 38.6% ± 10.5% in the control group and 25.4% ± 6.4% in the test group (P = .001). ChronOS mixed with autogenous bone graft demonstrated a resorption rate similar to that of the autogenous bone graft but with a difference in bone formation after 6 months.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Dos Santos Pereira
authors.forename: Fernanda Brasil
authors.initials: FB
authors.lastname: Boos
authors.forename: Luis Fernado
authors.initials: LF
authors.lastname: Gorla
authors.forename: Idelmo Rangel
authors.initials: IR
authors.lastname: Garcia
authors.forename: Roberta
authors.initials: R
authors.lastname: Okamoto
authors.forename: Eduardo
authors.initials: E
authors.lastname: Hochuli-Vieira
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000517:prevention & control; D001843:Bone Cements / Q000627:therapeutic use*; D016025:Bone Transplantation / Q000379:methods*; D002130:Calcium Phosphates / Q000627:therapeutic use*; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000637:transplantation; D011446:Prospective Studies; D059546:Sinus Floor Augmentation / Q000379:methods*; D013524:Surgical Flaps
chemical_list: D001843:Bone Cements; D002130:Calcium Phosphates; C485817:beta-tricalcium phosphate