Journal ArticleDOI
Characterization of aluminium radiopacity standards for restorative materials.
TLDR
The radiographic density of a typical age-hardening aluminium alloy containing 4 per cent copper was found to exceed significantly that of aluminium of 99·5 per cent purity, and the radiopacity of materials when expressed in terms of ‘equivalent thickness of metal’ is greater relative to pure aluminium than with this type of aluminium alloy.About:
This article is published in Journal of Dentistry.The article was published on 1987-08-01. It has received 22 citations till now. The article focuses on the topics: Aluminium alloy & Aluminium.read more
Citations
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Journal ArticleDOI
Radiopacity of dental materials using a digital X-ray system
TL;DR: A simplified, consistent digital method for determining radiopacity is presented and linearity allows the correlation to be accurately deduced from fewer data points than required by the ISO and ANSI/ADA protocols.
Journal ArticleDOI
Aluminium radiopacity standards for dentistry: an international survey.
David C. Watts,John F. McCabe +1 more
TL;DR: Of the examined representative step-wedges, all but the aluminium--4% copper material were satisfactory and gave results comparable with wedges of high purity, so limits should be revised for composition of aluminium radiopacity step- wedges or test blocks to a more realistic level of purity.
Journal ArticleDOI
Radiopaque polymeric materials for medical applications. Current aspects of biomaterial research.
TL;DR: In the near future, research will certainly concentrate on biocompatible radiopaque polymers with covalently bound opaque elements leading to stablepolymers with properties equivalent to the nonopaque, parent polymer.
Journal ArticleDOI
Microleakage of dentine-bonded posterior composite restorations
M.A. Fayyad,A.C.C. Shortall +1 more
TL;DR: In this paper, the marginal leakage of extensive class II preparations that had been restored with light-cured posterior composite materials using dentine-bonding agents or glass-ionomer cement linings was assessed and quantified using digital imaging microscopy.
Journal ArticleDOI
Radiopacity of composites compared with human enamel and dentine.
Guy Willems,M.J. Noack,M.J. Noack,S Inokoshi,P. Lambrechts,B. Van Meerbeek,M. Braem,Jean-François Roulet,G. Vanherle +8 more
TL;DR: A 99.5 per cent pure aluminium step-wedge served as reference for evaluating the radiopacity of 55 anterior and posterior composites, finding that some composites intended for posterior use lack theRadiopacity required for posterior composite restorations.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
In vivo and in vitro Wear of Potential Posterior Composites
TL;DR: Among the composite resins tested, there was no acceptable resin-based amalgam substitute for wear, and wear resistance tends to increase both as cavity size decreases, and also from chemical- to light- to heat-cured.
Journal ArticleDOI
Radiopacity of root canal sealers.
TL;DR: A standardized and reproducible method of radiopacity measurements of dental materials is presented and measurements of forty root canal sealers demonstrated wide variations among the different types.
Journal ArticleDOI
An investigation of the radiopacity of composite restorative materials
TL;DR: The radiopacity of 33 commercially available composite materials was measured in terms of their equivalent thickness of an aluminum alloy per unit thickness of material and the theoretical significance of this definition was discussed.
Journal ArticleDOI
Radiopacity of composite restorative materials.
Z M Abou-Tabl,D C Tidy,E C Combe +2 more