The influence of implant geometry and surface composition on bone response.

Objectives: The implant design and surface modification are independent conditions that can alter the implant bone response. The objective of this study is to compare the bone response to roughened tapered and cylindrical screw-type implants with and without hydroxyapatite (HA) surface coating in the femoral trabecular bone of rabbits.

Material And Method: Thirty-two implants (8 × 3.

Assessment of Osstell™ and Periotest® systems in measuring dental implant stability (in vitro study).

Objectives: The objectives of this in vitro study were to investigate the sensitivity and reliability of the Osstell™ systems (Resonance Frequency Analysis - RFA) compared to the Periotest® system in implant bone simulated conditions. Three conditions were simulated: (1) the direct fixture-bone contact and fibrous tissue fixture contact, (2) The different levels of horizontal bone loss, and (3) The hardening implant-bone interface.

Materials And Methods: Forty-nine dental implant fixtures were placed in the center of acrylic cubes.