title: The effects of PRGF on bone regeneration and on titanium implant osseointegration in goats: a histologic and histomorphometric study.
abstract: The effect of local application of scaffold-like preparation rich in growth factors (PRGF) on bone regeneration in artificial defects and the potential effect of humidifying titanium dental implants with liquid PRGF on their osseointegration were investigated. The PRGF formulations were obtained from venous blood of three goats and applied either as a 3D fibrin scaffold (scaffold-like PRGF) in the regeneration of artificial defects or as liquid PRGF via humidifying the implants before their insertion. Initially, 12 defects were filled with scaffold-like PRGF and another 12 were used as controls. The histological analysis at 8 weeks revealed mature bone trabeculae when PRGF was used, whereas the control samples showed mainly connective tissue with incipient signs of bone formation. For the second set of experiments, 26 implants (13 humidified with liquid PRGF) were placed in the tibiae of goats. Histological and histomorphometric results demonstrated that application of liquid PRGF increased the percentage of bone-implant contact in 84.7%. The whole surface of the PRGF-treated implants was covered by newly formed bone, whereas only the upper half was surrounded in control implants. In summary, PRGF can accelerate bone regeneration in artificial defects and improve the osseointegration of titanium dental implants.
authors.affiliation: Biotechnology Institute I MAS D, San Antonio 15, 01005 Vitoria, Spain. eduardoanitua@eduardoanitua.com
authors.forename: Eduardo
authors.initials: E
authors.lastname: Anitua
authors.forename: Gorka
authors.initials: G
authors.lastname: Orive
authors.forename: Rafael
authors.initials: R
authors.lastname: Pla
authors.forename: Pedro
authors.initials: P
authors.lastname: Roman
authors.forename: Victoriano
authors.initials: V
authors.lastname: Serrano
authors.forename: Isabel
authors.initials: I
authors.lastname: Andía
mesh_terms: D000818:Animals; D001861:Bone Regeneration; D015921:Dental Implants; D006041:Goats / Q000601:surgery; D036341:Intercellular Signaling Peptides and Proteins / Q000378:metabolism*; D016348:Osseointegration; D054457:Tissue Scaffolds; D014025:Titanium
chemical_list: D015921:Dental Implants; D036341:Intercellular Signaling Peptides and Proteins; D014025:Titanium