title: Histological characteristics of peri-implant mucosa around Brånemark and single-crystal sapphire implants.
abstract: Soft tissues surrounding Brånemark titanium implants and single crystal sapphire implants were studied by conventional light- and transmission electron microscopy and by immunohistochemical markers for cytokeratin, protein S-100, Factor VIII and KP1. Histological sections of biopsies obtained from clinically healthy peri-implant mucosa were separated into a keratinized outer implant epithelium and an inner, non-keratinized epithelium, both immunoreactive towards cytokeratin. The inner implant epithelium terminated in a junctional epithelium, apically not a few cell layers thick. The cells adjacent to the implant showed a condensed cytoplasm, resembling hemidesmosomes. In the underlying connective tissue, rich in fibroblasts and factor VIII immunoreactive blood vessels, the bundles of collagen ran in different directions. S-100 immunoreactive nerve structures were more frequently found beneath the outer than the inner implant epithelium. Inflammatory cell infiltrates, some KP1 positive, were observed in the apical parts of the inner implant epithelium. S-100 positive Langerhans' cells were present mainly within the the outer implant epithelium. For the two implant systems, the techniques disclosed no qualitative structural differences in the adjacent soft tissues.
authors.affiliation: Department of Prosthetic Dentistry, Faculty of Odontology, Karolinska Institutet, Stockholm, Sweden.
authors.forename: K
authors.initials: K
authors.lastname: Arvidson
authors.forename: B
authors.initials: B
authors.lastname: Fartash
authors.forename: M
authors.initials: M
authors.lastname: Hilliges
authors.forename: P A
authors.initials: PA
authors.lastname: Köndell
mesh_terms: D000537:Aluminum Oxide; D000818:Animals; D015703:Antigens, CD / Q000032:analysis; D015214:Antigens, Differentiation, Myelomonocytic / Q000032:analysis; D003238:Connective Tissue / Q000473:pathology; D003239:Connective Tissue Cells; D015921:Dental Implants; D004847:Epithelial Cells; D004848:Epithelium / Q000473:pathology; D005169:Factor VIII / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D051379:Mice; D009061:Mouth Mucosa / Q000033:anatomy & histology / Q000473:pathology; D016348:Osseointegration; D010519:Periodontium / Q000033:anatomy & histology / Q000098:blood supply / Q000294:innervation / Q000473:pathology / Q000648:ultrastructure; D011817:Rabbits; D009418:S100 Proteins / Q000032:analysis; D014025:Titanium; D000097382:CD68 Molecule
chemical_list: D000537:Aluminum Oxide; D015703:Antigens, CD; D015214:Antigens, Differentiation, Myelomonocytic; D015921:Dental Implants; D005169:Factor VIII; D007633:Keratins; D009418:S100 Proteins; D014025:Titanium; C067980:CD68 antigen, human; D000097382:CD68 Molecule