Biomechanical, micro-computed tomographic and immunohistochemical analysis of early osseous integration at titanium
Kathrin Becker1,2, Dieter Drescher2, Ralf Hönscheid2
1Department of Oral Surgery, Universitätsklinikum Düsseldorf, Düsseldorf, Germany.
Objectives:
To assess biomechanical, micro-computed tomographic (micro CT) and immunohistochemical characteristics of early osseous integration at titanium implants placed following lateral ridge augmentation using autogenous extracted tooth roots.
Material & Methods:
The roots of healthy maxillary premolars (PM) and retromolar cortical autogenous bone (AB) blocks were used for lateral ridge augmentation at chronic-type defects in the lower quadrants of n = 16 foxhounds. At 12 weeks, titanium implants were inserted and left to heal for another 3 weeks. Osteocalcin (OC) antigen reactivity, removal torque values (RT) and the bone volume per tissue volume (micro CT- BV/TV) along the implants were assessed.
Results:
Median OC (PM: 6.71 vs. AB: 2.73%), RT (PM: 61.97 vs. AB: 44.8 Ncm) and BV/TV (PM: 0.34 vs. AB: 0.21) values were comparable in both PM and AB groups.
Conclusions:
PM and AB grafted sites equally supported the early stages of osseointegration.
