title: Maxillary sinus augmentation using a synthetic cell-binding peptide: a histologic and transmission electron microscopy case study in man.
abstract: PepGen P-15 is a combination natural anorganic bovine-derived hydroxyapatite matrix coupled with a synthetic cell-binding peptide (P-15). This material has improved bone formation in periodontal osseous defects and bone regenerative procedures. There were 3 specimens retrieved 18 months after a sinus lifting procedure using PepGen P-15. These specimens were treated to be observed under light microscopy and transmission electron microscopy. Light microscopy showed that most of the particles were surrounded by newly formed bone. In some areas, osteoid matrix was present. No acute inflammatory infiltrate was present. In transmission electron microscopy, all phases of bone formation (i.e., osteoid matrix, woven bone, and lamellar bone) were observed in the newly formed bone around the biomaterial particles. In some regions, this newly formed bone seemed to present interdigitations connecting to or entering into the particle surface. To our knowledge, this is the first report presenting data on transmission electron microscopy of PepGen P-15 used in a sinus augmentation procedure in man. Our results confirm previous reports on the clinical effectiveness of this material.
authors.affiliation: Private Practice, Bologna, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Degidi
authors.forename: Antonio
authors.initials: A
authors.lastname: Scarano
authors.forename: Giovanna
authors.initials: G
authors.lastname: Iezzi
authors.forename: Giovanna
authors.initials: G
authors.lastname: Orsini
authors.forename: Vittoria
authors.initials: V
authors.lastname: Perrotti
authors.forename: Rita
authors.initials: R
authors.lastname: Strocchi
authors.forename: Adriano
authors.initials: A
authors.lastname: Piattelli
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001861:Bone Regeneration; D018786:Bone Substitutes / Q000627:therapeutic use*; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000601:surgery*; D046529:Microscopy, Electron, Transmission; D008875:Middle Aged
chemical_list: D018786:Bone Substitutes; C403137:PepGen P-15