title: Hydroxylapatite implants with or without collagen in the zygomatic arch of rats. Histological study.
abstract: The authors studied the behavior of calcium phosphate materials used as inlay implants into bone cavities prepared in the zygomatic arch of rats. Fifty male albino rats were divided into four groups as follows: group I-preparation of bone cavities which did not receive any implant material as controls; group II-implants of Interpore 200; group III-implants of experimental hydroxylapatite; group IV-implants of experimental hydroxylapatite combined with collagen. The animals were sacrificed after 5, 15, 30, 60 and 120 days and the specimens were submitted to histological analysis. Results showed that the experimental hydroxylapatite used in group III presented better osteogenic properties compared to the other materials. All tested materials were biocompatible, although group IV presented a more intense inflammatory response.
authors.affiliation: Faculty of Dentistry of Araraquara, UNESP, Araraquara, 14801-903 Araraquara, SP, Brasil. secddc@black.foar.unesp.br
authors.forename: M A
authors.initials: MA
authors.lastname: Gabrielli
authors.forename: E
authors.initials: E
authors.lastname: Marcantonio Júnior
authors.forename: G
authors.initials: G
authors.lastname: Góissis
authors.forename: T
authors.initials: T
authors.lastname: Okamoto
authors.forename: M F
authors.initials: MF
authors.lastname: Gabrielli
authors.forename: E H
authors.initials: EH
authors.lastname: Vieira
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000627:therapeutic use; D018786:Bone Substitutes / Q000627:therapeutic use*; D003094:Collagen / Q000627:therapeutic use*; D003238:Connective Tissue / Q000473:pathology; D017886:Durapatite / Q000627:therapeutic use*; D005347:Fibroblasts / Q000473:pathology; D005500:Follow-Up Studies; D015726:Giant Cells / Q000473:pathology; D008214:Lymphocytes / Q000473:pathology; D008264:Macrophages / Q000473:pathology; D008297:Male; D009504:Neutrophils / Q000473:pathology; D010006:Osteoblasts / Q000473:pathology; D010012:Osteogenesis / Q000502:physiology; D051381:Rats; D017208:Rats, Wistar; D015050:Zygoma / Q000473:pathology / Q000601:surgery*
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D003094:Collagen; D017886:Durapatite