$381,250 Grant Awarded to
Dr. Robert Seghi and Collaborators
Dr. Robert Seghi awarded NIH Grant.
Professor and Chair of the Division of Restorative
and Prosthodontic Dentistry Robert Seghi, along with Mechanical
Engineering Professor Noriko Katsube, and Materials Science
Engineering Professor Stanislav Rokhlin, has received a National
Institutes of Health (NIH)grant in the amount of $381,250.
The grant project, entitled Understanding interface initiated
fractures in glass- ceramic restorations, involves the development
of a non-destructive ultrasound-based diagnostic tool that will
enable researchers to monitor the degradation of adhesive interfaces
“Such a device will help us to study changes in the adhesive cement
properties that occur over time below a ceramic restoration, and how
this change influences ceramic restoration failure,” Dr. Seghi said.
“The concepts are similar to those used by Professor Rokhlin
to develop tools for evaluation of certain components of airplanes
-- but the tool will need to be miniaturized to accommodate smaller
areas like teeth.”
This research has come about from an increased application
of the more aesthetic, all-ceramics dental restorations.
This research resulted from an increased application of the more
aesthetic, all-ceramics dental restorations. Fractures are the most
common cause of failure in these types of restorations, and there is
evidence that the adhesive cement beneath the crown plays an
important role in the longevity and durability of these
restorations. Currently, there is no non-destructive means to
evaluate the adhesive cement below dental restorations.
“The cement property information obtained from this device could
be input into statistical fracture mechanics-based models, such as
those used in the aerospace industry to estimate clinical
longevity," said Professor Katsube. "Our group has worked for
several years on this complex problem.”
The budget period for this award is Sept. 20, 2011 to Aug. 31, 2012.