BACKGROUND Cobalt-chrome (CoCr) alloys have been used in dentistry in decades but very little is known about their behavior and biological impact as framework materials in implant dentistry. Furthermore, few studies have evaluated and compared the clinical and radiological results of abutment and abutment-free implant treatment concepts. AIMS To investigate in vitro CoCr and commercially pure...

PURPOSE Zirconia ceramics are a viable alternative to titanium for use as dental implants. However, the smooth surface of zirconia means that longer healing periods are needed to accomplish osseointegration compared to roughened titanium surfaces. Surface modifications can be used to increase the roughness of zirconia. The aim of this study was to assess histologically and compare the degree of...

Lindahl, C. 2012. Biomimetic Deposition of Hydroxyapatite on Titanium Implant Materials. Acta Universitatis Upsaliensis. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 986. 57 pp. Uppsala. ISBN 978-91-554-8510-8. The clinical success of a bone-anchored implant is controlled by many factors such as implant shape, chemical composition, mechanic...

PURPOSE The purpose of this study was to use a clinical simulation to determine whether wear of the internal surface of a titanium implant was greater following connection and loading of a one-piece zirconia implant abutment or a titanium implant abutment. MATERIALS AND METHODS Two implants received zirconia abutments and two received titanium abutments. The implants were secured into four fi...

Despite the excellent osseointegration of carbon-fiber-reinforced polyetheretherketone (CFR/PEEK) with a surface hydroxyapatite (HA) coating, the bone-implant interfacial shear strength of HA-coated CFR/PEEK after osseointegration is unclear. We examined the interfacial shear strength of HA-coated CFR/PEEK implants after in vivo implantation in a rabbit femur-implant pull-out test model. HA coa...

Introduction: The success of an orthopaedic implant depends on several factors, such as implant material properties, design and fixation technique as well as bone apposition around the implant. Polyetheretherketone (PEEK) is a composite thermoplastic biomaterial exhibiting biochemical and biomechanical properties suitable for load-bearing orthopaedic implants. Two advantages of carbon fibre rei...

A regenerative procedure treating a local osseous defect around titanium dental implant using porous titanium granules is described in four patients. Porous titanium granules represent, for maxillofacial surgery, a new alternative in augmenting osseous defects. Its earliest application was in the field of orthopedics for stabilization of tibia plateau fractures and for reoperations in prostheti...

Titanium and its alloy are known as important load-bearing biomaterials. The major drawbacks of these metals are fibrous formation and low corrosion rate after implantation. The surface modification of biomedical implants through various methods such as plasma spray improves their osseointegration and clinical lifetime. Different materials have been already used as coatings on biomedical implan...

BACKGROUND The concept of osseointegration involves direct contact between titanium implant and bone. This transcutaneous prosthetic system for amputees is intended to assure stable long-term fixation. Most metal transcutaneous implants have failed, primarily owing to infection. QUESTIONS/PURPOSES We determined the frequency and describe the presentation of infectious complications with this ...