Nickel alloys in the oral environment.

Expert review of medical devices (2013-07-31)
John C Wataha, Jeanie L Drury, Whasun O Chung
摘要

The use of nickel casting alloys for long-term restorations in dentistry has long been controversial. A 'tug-of-war' between economic, engineering and biological considerations is central to this controversy; nickel-casting alloys have low costs and favorable physical properties, but are corrosion-prone in the oral environment. Clinicians and researchers have questioned the safety of nickel-containing dental alloys because several nickel compounds are known to cause adverse biological effects in vivo and in vitro in contexts outside of dentistry. The debate revolves around the extent to which corrosion products from oral restorations cause intraoral or systemic biological problems. Current evidence suggests that nickel alloys may be used successfully and safely in dentistry if clinical risks are taken into account. However, these alloys may cause significant clinical problems, primarily allergenic and inflammatory, if the risks are ignored.

材料
货号
品牌
产品描述

Sigma-Aldrich
镍, foil, thickness 0.125 mm, ≥99.9%
Sigma-Aldrich
镍, foil, thickness 0.5 mm, 99.98% trace metals basis
Sigma-Aldrich
镍, wire, diam. 0.25 mm, ≥99.9%
Sigma-Aldrich
镍, foil, thickness 0.1 mm, 99.98% trace metals basis
Sigma-Aldrich
镍, wire, diam. 0.5 mm, ≥99.9% trace metals basis
Sigma-Aldrich
镍, wire, diam. 0.5 mm, ≥99.99% trace metals basis
Sigma-Aldrich
镍, rod, diam. 6.35 mm, ≥99.99% trace metals basis
Sigma-Aldrich
镍, foil, thickness 0.25 mm, 99.995% trace metals basis
镍, mesh, 100x250mm, nominal aperture 0.73mm, wire diameter 0.25mm, 26x26 wires/inch, open area 55%, plain weave mesh, 99%
镍, wire reel, 20m, diameter 0.025mm, as drawn, 99.98%
镍, wire reel, 10m, diameter 0.01mm, as drawn, 99.98%
镍, rod, 100mm, diameter 16mm, 99.99+%
镍, foil, not light tested, 100x100mm, thickness 0.01mm, 99.95%
镍, wire reel, 20m, diameter 0.125mm, hard, 99.98%
镍, rod, 100mm, diameter 3.0mm, 99%
镍, wire reel, 1m, diameter 1.0mm, hard, 99.98%
镍, broken cathode squares, 1000g, max. size 50mm, 99.8%
镍, tube, 1000mm, outside diameter 6.5mm, inside diameter 5.5mm, wall thickness 0.5mm, hard, 99.5%
镍, foil, 50mm disks, thickness 0.05mm, annealed, 99%
镍, wire reel, 20m, diameter 0.5mm, as drawn, 99%
镍, foil, 4mm disks, thickness 0.075mm, annealed, 99%
镍, foil, 4mm disks, thickness 0.075mm, as rolled, 99.98%
镍, foil, 4mm disks, thickness 0.125mm, annealed, 99%
镍, foil, 4mm disks, thickness 0.125mm, annealed, 99.98%
镍, foil, 4mm disks, thickness 0.125mm, as rolled, 100%
镍, foil, 4mm disks, thickness 0.125mm, as rolled, 99.99+%
镍, foil, 4mm disks, thickness 0.15mm, annealed, 99%
镍, foil, 4mm disks, thickness 0.1mm, annealed, 99%
镍, foil, 4mm disks, thickness 0.20mm, annealed, 99%
镍, foil, 4mm disks, thickness 0.25mm, annealed, 99%