title: Bone healing with or without platelet-rich plasma around four different dental implant surfaces in beagle dogs.
abstract: OBJECTIVE
  Surface development is one of the major aims in dental implant engineering. Additive application of substances could possibly improve the new bone formation around dental implants. The present study evaluated the bone reaction on four different implant surfaces with or without platelet-rich plasma (PRP).
  
  
  METHODS
  Four self-tapping titanium screw implants (Brånemark MK III [Nobel Biocare, Göteborg, Sweden], Osseotite [3i, Miami, FL, USA], Xive [Densply Friadent, Mannheim, Germany], and Compress [IGfZ eG, Diez, Germany]) with different surfaces were inserted in each hemimandible of 12 female beagle dogs; the implant positions and the application of PRP were randomized. After intravital fluorochrome staining, sacrifices and biopsies harvesting were performed after 6 weeks (five dogs; one dog died before) and 12 weeks (six dogs) and the respective specimens were analyzed.
  
  
  RESULTS
  The only significant difference in bone remodeling was found for the Compress implants with increased bone formation compared with the Brånemark implants at 12 weeks (sign test, p = .03). Comparing the histological and histomorphometric specimens of all other implant surfaces with respect to peri-implant bone remodeling and the resulting bone-implant contact rates (BICRs), no statistically significant differences were seen in the PRP or non-PRP groups (sign test, all p values ≥ .063).
  
  
  CONCLUSIONS
  This study found no significant differences in the BICR for roughened implant surfaces compared with machined surfaces. In this animal model, the addition of PRP did not demonstrate evidence of faster bone formation or the resulting BICR.
authors.affiliation: Department of Cranio-Maxillo-Facial Surgery, Justus Liebig University, Giessen, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Streckbein
authors.forename: Wilfried
authors.initials: W
authors.lastname: Kleis
authors.forename: Rainer S R
authors.initials: RS
authors.lastname: Buch
authors.forename: Torsten
authors.initials: T
authors.lastname: Hansen
authors.forename: Gernot
authors.initials: G
authors.lastname: Weibrich
mesh_terms: D000818:Animals; D001706:Biopsy; D001861:Bone Regeneration; D015921:Dental Implants; D004285:Dogs; D005260:Female; D008334:Mandible / Q000601:surgery*; D016348:Osseointegration; D053657:Platelet-Rich Plasma; D013499:Surface Properties; D014025:Titanium; D014945:Wound Healing
chemical_list: D015921:Dental Implants; D014025:Titanium
keywords: animal study; dental implant surfaces; histomorphometry; peri-implant bone; platelet-rich plasma