title: Experimental maxillary sinus augmentation using a highly bioactive glass ceramic.
abstract: Physicochemical characteristics of a biomaterial directly influence its biological behavior and fate. However, anatomical and physiological particularities of the recipient site also seem to contribute with this process. The present study aimed to evaluate bone healing of maxillary sinus augmentation using a novel bioactive glass ceramic in comparison with a bovine hydroxyapatite. Bilateral sinus augmentation was performed in adult male rabbits, divided into 4 groups according to the biomaterial used: BO-particulate bovine HA Bio-Oss(®) (BO), BO+G-particulate bovine HA + particulate autogenous bone graft (G), BS-particulate glass ceramic (180-212 μm) Biosilicate(®) (BS), and BS+G-particulate glass ceramic + G. After 45 and 90 days, animals were euthanized and the specimens prepared to be analyzed under light and polarized microscopy, immunohistochemistry, scanning electron microscopy (SEM), and micro-computed tomography (μCT). Results revealed different degradation pattern between both biomaterials, despite the association with bone graft. BS caused a more intense chronic inflammation with foreign body reaction, which led to a difficulty in bone formation. Besides this evidence, SEM and μCT confirmed direct contact between newly formed bone and biomaterial, along with osteopontin and osteocalcin immunolabeling. Bone matrix mineralization was late in BS group but became similar to BO at day 90. These results clearly indicate that further studies about Biosilicate(®) are necessary to identify the factors that resulted in an unfavorable healing response when used in maxillary sinus augmentation.
authors.affiliation: Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo - FOB/USP, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP, 17012-901, Brazil.
authors.forename: Rodrigo Ricci
authors.initials: RR
authors.lastname: Vivan
authors.affiliation: Oral Biology Master's Program, Sagrado Coração University - USC, Rua Irmã Arminda 10-50, Baur, SP, 17011-160, Brazil.
authors.forename: Carlos Eduardo
authors.initials: CE
authors.lastname: Mecca
authors.affiliation: Oral Biology Doctoral's Program, Bauru School of Dentistry, University of São Paulo - FOB/USP, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP, 17012-901, Brazil.
authors.forename: Claudia Cristina
authors.initials: CC
authors.lastname: Biguetti
authors.affiliation: Department of Bioscience, Federal University of Sao Paulo, Campus Baixada Santista - UNIFESP, Avenida Ana Costa, 95, Santos, SP, 11060-001, Brazil.
authors.forename: Ana Claudia Muniz
authors.initials: AC
authors.lastname: Rennó
authors.affiliation: Department of Basic Sciences, Araçatuba School of Dentistry, São Paulo State University, FOA/UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil.|CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico), Brasília, Brazil.
authors.forename: Roberta
authors.initials: R
authors.lastname: Okamoto
authors.affiliation: Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo - FOB/USP, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP, 17012-901, Brazil.
authors.forename: Bruno Cavalini
authors.initials: BC
authors.lastname: Cavenago
authors.affiliation: Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo - FOB/USP, Al. Octávio Pinheiro Brisola, 9-75, Bauru, SP, 17012-901, Brazil.
authors.forename: Marco Húngaro
authors.initials: MH
authors.lastname: Duarte
authors.affiliation: Department of Basic Sciences, Araçatuba School of Dentistry, São Paulo State University, FOA/UNESP, Rua José Bonifácio 1193, Araçatuba, SP, 16015-050, Brazil. vicmak.blv@terra.com.br.|Oral Biology Doctoral's Program, Sagrado Coração University, USC, Bauru, Brazil. vicmak.blv@terra.com.br.
authors.forename: Mariza Akemi
authors.initials: MA
authors.lastname: Matsumoto
mesh_terms: D000818:Animals; D001857:Bone Matrix / Q000473:pathology; D001861:Bone Regeneration / Q000502:physiology; D018786:Bone Substitutes / Q000737:chemistry / Q000627:therapeutic use*; D016025:Bone Transplantation / Q000379:methods*; D002417:Cattle; D002516:Ceramics / Q000737:chemistry / Q000627:therapeutic use*; D008297:Male; D008422:Materials Testing; D008443:Maxillary Sinus / Q000473:pathology; D016348:Osseointegration / Q000502:physiology; D010012:Osteogenesis / Q000502:physiology; D011817:Rabbits; D059546:Sinus Floor Augmentation / Q000295:instrumentation* / Q000379:methods; D055114:X-Ray Microtomography
chemical_list: D018786:Bone Substitutes; C023506:Glass ceramics