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Sandblasted and acid-etched dental implants: a histologic study in rats
Vanessa C Marinho1, Renato Celletti, Guido Bracchetti
1School of Dentistry, University of Southern California, Los Angeles, California, USA. marinho@hsc.usc.edu
Purpose:
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.
Materials And 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.
Discussion And Conclusion:
The sandblasted/acid-etched surface demonstrated a stronger bone response than the machined one at a later period of healing.