title: Removal torque and histomorphometric investigation of 4 different titanium surfaces: an experimental study in the rabbit tibia.
abstract: This study presents a histomorphometric and biomechanical comparison of bone response to commercially pure titanium screws with 4 different types of surface topographies placed in the tibial metaphysis of 12 rabbits. Each rabbit had 4 implants placed, 2 in each tibia. The 4 surface topographies were a machined surface, a grit-blasted surface, a plasma-sprayed surface, and an acid-etched (Osseotite) surface. After a healing period of 5 weeks, histomorphometric and removal torque data revealed a significantly higher percentage of bone-to-implant contact and removal torque for acid-etched implants compared to machined, blasted, and plasma-sprayed implants. Within the limits of this short-term experimental study, the results indicated that micro-rough titanium surfaces obtained with acid-etching procedures achieved a 33% greater bone-to-implant contact over machined titanium surfaces with an abutment-type roughness and provided enhanced mechanical interlocking.
authors.affiliation: Department of Periodontology, University of Padova, Institute of Clinical Dentistry, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Cordioli
authors.forename: Z
authors.initials: Z
authors.lastname: Majzoub
authors.forename: A
authors.initials: A
authors.lastname: Piattelli
authors.forename: A
authors.initials: A
authors.lastname: Scarano
mesh_terms: D000818:Animals; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D020878:Device Removal; D020007:Implants, Experimental; D016348:Osseointegration; D011817:Rabbits; D013499:Surface Properties; D013977:Tibia; D014025:Titanium; D019415:Torque
chemical_list: D015921:Dental Implants; D014025:Titanium