Journal of Oral Implantology August 2013 - (Page 445)

RESEARCH Histologic and Biomechanical Evaluation of 2 ResorbableBlasting Media Implant Surfaces at Early Implantation Times Charles Marin, PhD1 Estevam A. Bonfante, PhD1* Ryan Jeong, PhD2 Rodrigo Granato, PhD1 Gabriela Giro, PhD3 Marcelo Suzuki, DDS4 Claiton Heitz, PhD5 Paulo G. Coelho, PhD2,6 This study evaluated 3 implant surfaces in a dog model: (1) resorbable-blasting media þ acid-etched (RBMa), alumina-blasting þ acid-etching (AB/AE), and AB/AE þ RBMa (hybrid). All of the surfaces were minimally rough, and Ca and P were present for the RBMa and hybrid surfaces. Following 2 weeks in vivo, no significant differences were observed for torque, bone-to-implant contact, and bone-area fraction occupied measurements. Newly formed woven bone was observed in proximity with all surfaces. Key Words: implant surface, in vivo, torque, histology, osseointegration, resorbable-blasting media INTRODUCTION T he contact between bone and endosseous implants is usually well established and maintained after implant placement, resulting in a success rate often exceeding 90% over 10 years.1,2 Past investigations have shown that surface modification methods have been successful in increasing the host response to the implants, resulting in better 1 Postgraduate Program in Dentistry, UNIGRANRIO University, School of Health Sciences, Duque de Caxias, RJ, Brazil. 2 Department of Biomaterials and Biomimetics, New York University, New York, NY. 3 Department of Oral Surgery and Diagnosis, Faculdade de Odontologia de Araraquara, UNESP, Araraquara, SP, Brazil. 4 Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Mass. 5 Department of Oral and Maxillofacial Surgery, Pontificia Universidade Catolica do Rio Grande Do Sul, Porto Alegre, RS, Brazil. 6 Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, NY. * Corresponding author, e-mail: DOI: 10.1563/AAID-JOI-D-10-00156 long-term bone morphology as well as the initial interaction between the host and the implant.3 As a result, surface modifications in texture and chemistry such as increasing the roughness and the addition of calcium- and phosphorus-based bioceramic coatings are among the most investigated aspects of the implant studies.3–6 In previous studies, surface texture modification has proven to be effective in increasing the host response in in vivo, in vitro, and ex vivo studies.7 More bone-to-implant interaction has been shown in surfaces with increased roughness as compared with as-machined or smooth surfaces (Sa , 0.5 lm). The best osseointegration measurable by bone-toimplant contact (BIC) has been shown in the moderately rough surfaces (Sa between 1 and 2 lm).3–6 Surface roughness can be achieved in a variety of ways, including acid etching, anodization, and grit blasting with nonresorbable media such as alumina, silica, or titanium oxides or with resorbable-blasting media (RBM) such as hydroxyapatite, Journal of Oral Implantology 445

Table of Contents for the Digital Edition of Journal of Oral Implantology August 2013

Literary Responsibility—Everyone Has a Role to Play
Rehabilitation of Surgically Relocated Integrated Dental Implants With and Without Bone Morphogenesis Protein-2
Marginal Fit of Implant-Supported All-Ceramic Zirconia Frameworks
Influence of the Implant Diameter With Different Sizes of Hexagon: Analysis by 3-Dimensional Finite Element Method
Autologous Dental Pulp Stem Cells in Regeneration of Defect Created in Canine Periodontal Tissue
Histologic and Biomechanical Evaluation of 2 Resorbable-Blasting Media Implant Surfaces at Early Implantation Times
Efficacy of Guided Bone Regeneration Using Composite Bone Graft and Resorbable Collagen Membrane in Seibert’s Class I Ridge Defects: Radiological Evaluation
Minimal Iliac Bone Harvesting in Sinus Lift Surgery
Functional Load in Oblique Bicortical Implants: Parasinusal Implants and Palatine Implants
Ultrasonic Oscillations for Conservative Retrieval of a Rare Fracture of Implant Healing Abutment
Craniofacial Implant-Retained Auricular Prosthesis: A Case Report
Gingival Conditioning in an Implant-Supported Prosthesis: A Clinical Report
An Early Loaded Implant-Supported Mandibular Complete Arch Fixed Prosthesis in a Young Completely Edentulous Patient: A Case Report
Computer Guided Surgery for Implant Placement and Dental Rehabilitation in a Patient Undergoing Sub-Total Mandibulectomy and Microvascular Free Flap Reconstruction
Guided Bone Regeneration for Socket Preservation in Molar Extraction Sites: Histomorphometric and 3D Computerized Tomography Analysis
Osseointegration of Dental Implants and Osteonecrosis of the Jaw in Patients Treated With Bisphosphonate Therapy: A Systematic Review
Review of Current Literature

Journal of Oral Implantology August 2013