Evaluations
Leinfelder K and
Prassad A: A New Condensable Composite Resin
for the Restoration of Posterior Teeth.
Dentistry Today February 1999: 3p., 1999.
In this article, the
authors introduce Alert® based on the
study they have made of it. They identify
Alert® as a condensable posterior composite
resin with properties and features similar
to amalgam. They also mention that Alert®
has a wear resistance very similar to amalgam
and much higher than other conventional
composites.
Drs. Leinfelder and Prassad conclude that
a composite with amalgam-like handling and
properties, such as Alert®, should help
to achieve success in Class II cavity preparations.
Leinfelder, Karl
F.: Technical Manual On Alert® Condensable
Posterior Composite Resin., January 1999.
By Dr. Karl F. Leinfelder, January 1999
In this document, Dr.
Leinfelder refers to Alert® as a “highly
packable composite” in clinical conditions
and compares its handling properties to
those of amalgam. He also mentions that
the multiple systems included in the resin
matrix of Alert® are very appropriate
for posterior restorations.
Finally, Dr. Leinfelder reveals that Alert®
has a very high resistance to wear, produces
a very good surface texture and is easily
and quickly put in place.
Sarkar, Nikhil
Ph.D.: Corrosive Wear of Commercial Composite
Resins., March 1999.
This study's main objective was to Evaluate
the wear resistance of eleven resin composites.
One of the main conclusions is that there
is a great variation in wear resistance
amongst the products. According to the study,
Alert® is in a class by itself for its
superior corrosive-wear resistance. The
products belonging to the next best category
are 10 to 20 times less resistant than Alert®.
Alert® showed the best results with
regards to resistance to both abrasive and
corrosive wear.
*Data on file. Available
upon request.
Faler and Mazer:
Margin Adaptation of a Condensable Composite
Restorative. University of Alabama-Birmingham.
The margin adaptation
and leakage exhibited by the new condensable
formulation, Alert®, was comparable
to the wear resistant composite, P-50/P
(3M).
Ruddell et al.: Mechanical properties and
wear behavior of Condensable Composites.
University of North Carolina.
The mechanical properties of condensable
composites were found to be similar to a
hybrid composite control. Alert® had
higher values than SureFil** for diametral
tensile strength, flexural strength, diamond
pyramid hardness and wear, although not
at a statistically significant level.
MacGregor et al.: Physical Properties of
Condensable versus Conventional Composites.
University of Iowa.
Alert® was found
to have a higher diametral tensile and flexural
strength than SureFil**, although not at
a statistically significant level. SureFil**
had a higher compressive strength than Alert®.
Kerby and
al.: Fracture Toughness of Posterior Condensable
Composite Resins. Ohio State University.
Alert®, a glass-fiber reinforced condensable
composite resin, exhibited a significantly
higher fracture toughness when compared
to any of the other composite resins tested.
Kelsey
et al.: Physical Properties of High Density
Composite Restorative Materials. Creighton
University.
All materials had statistically similar
diametral tensile strength. Alert® had
the highest fracture toughness and elastic
modulus but had low transverse strength.
**Registered trademark
of Dentsply/Caulk.
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