Journal of Oral Implantology October 2012 - (Page 549)
RESEARCH
Histologic and Biomechanical Evaluation of Alumina-Blasted/Acid-Etched and Resorbable Blasting Media Surfaces
Estevam A. Bonfante, PhD1* Charles Marin, PhD1 Rodrigo Granato, PhD1 Marcelo Suzuki, DDS2 Jenni Hjerppe, DDS3 Lukasz Witek, MS4 Paulo G. Coelho, PhD4,5 This study evaluated the early biomechanical fixation and bone-to-implant contact (BIC) of an alumina-blasted/ acid-etched (AB/AE) compared with an experimental resorbable blasting media (RBM) surface in a canine model. Higher texturization was observed for the RBM than for the AB/AE surface, and the presence of calcium and phosphorus was only observed for the RBM surface. Time in vivo and implant surface did not influence torque. For both surfaces, BIC significantly increased from 2 to 4 weeks. Key Words: biomechanical test, implant surface, resorbable blasting media, roughness
INTRODUCTION
he use of endosseous dental implants is a highly predictable treatment modality supported by a wealth of evidence reporting their safety and high survival rates over the long term.1 Because the implant surface has been identified as one of the six important factors for implant anchorage in bone,2 there have been remarkable efforts to improve surface design, as evidenced by the extensive number of studies published since the 1980s. Despite the robust and positive clinical results for
UNIGRANRIO, Rio de Janeiro, Brazil. Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass. 3 Department of Prosthodontics and Biomaterials Science – Faculty of Medicine, Institute of Dentistry, University of Turku, Turku, Finland. 4 Department of Biomaterials and Biomimetics, New York University, New York, NY. 5 Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, NY. * Corresponding author, e-mail: estevamab@gmail.com DOI: 10.1563/AAID-JOI-D-10-00105
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turned surfaces, which have been shown to last for up to 20 years,3 the purpose of changing implant surface topography and/or chemistry is to improve bone healing and reduce the waiting time between implant placement and its functional loading with a prosthesis.4 Basically, the engineering processes to modify an implant surface include chemical or physical alterations.5 Incorporating inorganic phases into the titanium oxide layer, such as calcium phosphate, has been shown to provide higher levels of early biomechanical fixations and bone-to-implant contact (BIC) percentage values compared with asturned, or grit-blast/acid-etched, surfaces.6,7 Specific to the addition of calcium- and phosphorus-based materials as coatings, some of the interest is due to the inherent presence of these elemental components in the natural bone. On the other hand, the rationale for making physical modifications is to create a rougher surface at the micrometer level that, up to a certain extent, increases bone anchorage and, at the nanometer scale, increases
Journal of Oral Implantology 549
Table of Contents for the Digital Edition of Journal of Oral Implantology October 2012
Should the Implant Fit the Patient or Should the Patient Fit the Implant?
Histologic and Biomechanical Evaluation of Alumina-Blasted/Acid-Etched and Resorbable Blasting Media Surfaces
Impact of Dental and Zygomatic Implants on Stress Distribution in Maxillary Defects: A 3-Dimensional Finite Element Analysis Study
Precision of Implant Placement With Stereolithographic Templates: A Pilot In Vitro Study
An Evaluation of Biocompatibility of Indigenously Produced Pure Titanium: An Experimental Study in Rabbits
Relationship Between Smoking and Bleeding on Probing
Stress Analysis in Platform-Switching Implants: A 3-Dimensional Finite Element Study
Acrylic Resin Polymerization in Direct Contact to the Abutment and the Temperature at Bone-Implant Interface: A Pilot In Vitro Study
Clinical Application of Stereolithographic Surgical Guide With a Handpiece Guidance Apparatus: A Case Report
Fixed Rehabilitation of Severely Atrophic Jaws Using Immediately Loaded Basal Disk Implants After In Situ Bone Activation
A Functional Open-Tray Impression Technique for Implant-Retained Overdenture Prostheses
Use of Plasma Rich in Growth Factor for Schneiderian Membrane Management During Maxillary Sinus Augmentation Procedure
A Technique to Facilitate the Fabrication of Provisional Restorations for ITI Solid Abutments
Influence of Etiologic Factors in Peri-Implantitis: Literature Review and Case Report
Simplistic Partially Limiting Surgical Guide for Flapless Implant Placement: A Case Report
Types of Implant Surgical Guides in Dentistry: A Review
Rehabilitation of Atrophic Posterior Maxilla With Zygomatic Implants: Review
Journal of Oral Implantology October 2012
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