Biomechanical and bone histomorphologic evaluation of four surfaces on plateau root form implants: An experimental study in dogs

Paulo G. Coelho, Rodrigo Granato, Charles Marin, Estevam A. Bonfante, Malvin N. Janal, Marcelo Suzuki

Research output: Contribution to journalArticle


Objective: To evaluate the early bone response to plateau root form dental implants with 4 different surface treatments. Study design: Surface treatments comprised (n = 12 each): as-machined (M), alumina-blasted/acid-etched (AB/AE), alumina-blasted/acid-etched + nanothickness bioceramic coating (Nano), and plasma-sprayed calcium phosphate (PSCaP). Implants were placed in the radius diaphyses of 12 beagle dogs, remaining in vivo for 3 and 5 weeks. After euthanasia, the implants were subjected to torque to interface fracture and subsequently nondecalcified for histomorphology. Statistical analysis was performed by a GLM analysis of variance model at 5% significance level. Results: Torque to interface fracture was significantly greater for the PSCaP group than for other groups (P < .001). Histomorphologic analysis showed woven bone formation around all implant surfaces at 3 weeks, and its replacement by lamellar bone at 5 weeks. Time in vivo did not affect torque measures. Conclusion: The PSCaP surface increased the early bone biomechanical fixation of plateau root form implants.

Original languageEnglish (US)
Pages (from-to)e39-e45
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
Issue number5
StatePublished - May 1 2010


ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology
  • Dentistry(all)

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