title: Sandblasted and acid-etched dental implants: a histologic study in rats.
abstract: OBJECTIVE
  Current literature has revealed that surface etching of endosseous implants can improve bone-implant contact. The aim of this study was to evaluate the differences in bone-implant contact (BIC) between sandblasted/acid-etched and machined-surface implants.
  
  
  METHODS
  Thirty-two Sprague-Dawley rats were used in this study. Two implant surfaces, Ecotek (sandblasted/ acid-etched) and machined, were used with 1 implant placed in each tibia of the animals. A total of 64 implants were placed. BIC was evaluated at 5, 15, 30, and 60 days. Histomorphometry of the BIC was evaluated statistically.
  
  
  RESULTS
  The sandblasted/acid-etched surface demonstrated a greater BIC percentage than the machined surface. This difference was statistically significant only at 30 and 60 days after healing.
  
  
  CONCLUSIONS
  The sandblasted/acid-etched surface demonstrated a stronger bone response than the machined one at a later period of healing.
authors.affiliation: School of Dentistry, University of Southern California, Los Angeles, California, USA. marinho@hsc.usc.edu
authors.forename: Vanessa C
authors.initials: VC
authors.lastname: Marinho
authors.forename: Renato
authors.initials: R
authors.lastname: Celletti
authors.forename: Guido
authors.initials: G
authors.lastname: Bracchetti
authors.forename: Giovanna
authors.initials: G
authors.lastname: Petrone
authors.forename: Cedric
authors.initials: C
authors.lastname: Minkin
authors.forename: Adriano
authors.initials: A
authors.lastname: Piattelli
mesh_terms: D000134:Acid Etching, Dental; D000537:Aluminum Oxide / Q000737:chemistry; D000704:Analysis of Variance; D000818:Animals; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D006858:Hydrofluoric Acid / Q000737:chemistry; D007091:Image Processing, Computer-Assisted; D008297:Male; D017942:Nitric Acid / Q000737:chemistry; D016348:Osseointegration; D010316:Particle Size; D051381:Rats; D017207:Rats, Sprague-Dawley; D012822:Silicon Dioxide / Q000737:chemistry*; D013223:Statistics as Topic; D013499:Surface Properties; D013977:Tibia / Q000473:pathology / Q000601:surgery; D013997:Time Factors; D014025:Titanium / Q000737:chemistry
chemical_list: D015921:Dental Implants; D003764:Dental Materials; D017942:Nitric Acid; D012822:Silicon Dioxide; D014025:Titanium; D000537:Aluminum Oxide; D006858:Hydrofluoric Acid