Nanocrystals make for improved dentures
Sunday January 22, 2012 09:46:39 PM,
IANS
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Washington:
A new kind of glass ceramic with a nanocrystalline structure will
make for improved dental restoration owing to its high strength
and optical characteristics, scientists say.
"We achieved a strength five times higher than with comparable
denture ceramics available today," said glass chemist Christian
Russel of the Friedrich Schiller University at Jena (Germany).
Materials to be considered as dentures are not supposed to be
optically different from natural teeth. At the same time not only
the right colour, but the shade is important.
"The enamel is partly translucent, which the ceramic is also
supposed to be," Rüssel says.
Russel, a professor and colleagues at the Otto-Schott-Institute
for Glass Chemistry succeeded in producing a new kind of glass
ceramic with a nanocrystalline structure, reports the Journal of
Biomedical Materials Research, quoting a varsity statement.
Ceramic materials used so far are not very suitable for bridges or
fixed partial dentures -- a dental restoration used to replace a
missing tooth by joining permanently to adjacent teeth -- as their
strengths are mostly not high enough.
"In combination with new optical characteristics an additional
field of application is opening up for these materials in
dentistry," says Rüssel.
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