By James F. Shackelford
Provides a accomplished survey of the sphere of bioceramics, from the historical past of biomaterials, mostly, and bioceramics, particularly, to the trendy reports of biomimetics. the most sections/chapters of the ebook specialise in the composition of 9 kinds of bioceramics (Al2O3-based, ZrO2-based, different basic oxides, hydroxyapatite, different calcium salts, silicate ceramics, silicate glasses, glass ceramics, ceramic- matrix composites) and the clinical functions of those fabrics in orthopaedics, dentistry and the therapy of cancerous tumors. Bioceramics will entice ceramic and mechanical engineers, scientific and dental pros, and scholars of advanced-level classes in similar fields.
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Extra info for Bioceramics
The ceramic base serves the critical function of thermal insulation. A steadily increasing use of resin-composites has occurred since they were introduced to dentistry in the early 1960’s (Clark and Anusavice 1991). These systems consist of an organic polymer (resin) matrix, a ceramic filler, and a coupling agent (binder) between the two components. The most common resin is aromatic dememacrylate monomer, bisphenol A-glycidyl methacrylate (BISGMA). The ceramic filler is typically quartz, colloidal silica, or silicate glasses containing strontium or barium.
The most difficult substitution would be a replacement for the metallic femoral stem. 1 Schematic illustration of the total hip replacement (THR) surgery. For typical cementless fixation, the upper one-third of the femoral stem is either covered with a porous metal coating or, more recently, with a thin layer of hydroxyapatite. (After Shackelford 1996) Component Femoral Ball Acetabular Cup Cement Cementless Material or Ceramic-matrix-composites Al2O3 or PSZ Al2O3 or PSZ – Hydroxyapatite BIOCERAMICS 37 vanced structural ceramics, such as partially-stabilized zirconia or various ceramic matrix composites, which would have superior values of fracture toughness.
4 shows an example with the commercial name Dicor (Dentsply International, York, PA). This glass-ceramic system is based on the growth of fluorine-containing, tetrasilicic mica crystals. % zirconia is believed to improve chemical durability and enhance translucency. This glass-ceramic is stained on the external surface with a shading porcelain to achieve acceptable aesthetics. 4 shows the resulting color match of a shade guide tab relative to the maxillary central incisors. 5, some of the primary applications of Bioglass implants have been in the dental field (Day 1995).