Product Description
In 2002, responding to the demand from dentists
for less technique sensitive cements, 3M ESPE
launched RelyX Unicem Self-Adhesive Universal
Resin Cement for the placement of indirect restorations
including ceramic, composite and metal
crowns, bridges, inlays, onlays, and posts. With
high bond strength to both dentin and enamel and
the etching, priming, and bonding steps eliminated
from the procedure, RelyX Unicem Cement was
quickly adopted by dentists who were ready to reap
the benefits of performance and convenience delivered
in one simple product.
High Bond Strengths and Unique Delivery
Initially launched as a powder/liquid formulation
in the Aplicap Capsule for single units and Maxicap
Capsule for multiple units, RelyX Unicem Cement
achieved high bond strengths to both dentin and
enamel. One of the key success factors for this product
was to meet the demand to combine the ease-of
use of conventional cements with the performance
and esthetics of resin cements.1 While based in known
concepts of resin chemistry, the combination of ideal
handling with mechanical performance was only
achieved through the formulation of new monomers,
fillers, and initiators.
The technique is a simple one: after combining
the powder/liquid formulation with a triturator, the
material is dispensed directly into the restoration
and seated on the preparation. With a 2-minute
working time and a 5-minute setting time, the
material offers flexibility and easy
cleanup.
To further improve on the ease of use,
3M ESPE introduced a paste/paste version
of RelyX Unicem Cement in a new
Clicker Dispenser in 2007. This unique
additional delivery system dispenses a
measured amount of the 2 pastes side-byside
for 20 seconds of hand mixing, and
minimal waste, before application to the
restoration. RelyX Unicem Cement is
available in multiple shades in both delivery
methods including A2 Universal, A3
Opaque, and Transluscent; shades A1
and White Opaque are also available in
the Aplicap delivery system.
Backed by Science
As with most products formulated by
3M ESPE, RelyX Unicem Cement is
based in sound chemistry and is backed
not only by a significant number of independent
clinical studies, but also by technological
advancements in resin and
monomer chemistry. When mixed, RelyX
Unicem Cement is acidic and therefore
hydrophilic in nature, which makes it
very forgiving for the dentist to use in
clinical practice because it works well in a
moist environment and adapts easily to
moist tooth structure. After curing,
whether self-cure or light-cure, a highly
cross-linked cement matrix develops that
is hydrophobic with low expansion and
low solubility. Ultimately, it is the chemistry
of this product that forms the basis
for the long-term stability of the bond
and ultimately the clinical success of
restorations cemented with this product.
A Family of Cements
RelyX Unicem Cement is just one
product in the RelyX family of cements
from 3M ESPE. While RelyX Unicem
Cement has earned the top position in the
market for self-adhesive cements, RelyX
Luting Plus Cement is a resin-modified
glass ionomer formulation that is the preferred
conventional cement. Also offered
in the product line are RelyX Veneer
Cement for the more demanding, esthetic
requirements of veneers and RelyX ARC
Adhesive Resin Cement.
Regardless of the clinical preference
for type of cement (whether self-adhesive,
conventional resin, or resin-modified
glass ionomer), the RelyX family of
cements offers a high-performance solution
for virtually every dentist. All of the
RelyX Cements have optimized their formulations
for ease of use, reduced postoperative
sensitivity, esthetics, clean up,
and ultimately clinical longevity. RelyX
Luting Plus Cement, which offers very
high fluoride release, also is available in
the easy-to-use Clicker dispenser. The
Clicker minimizes waste and ensures the
proper mix ratio, making it a more reliable
option when etching is not an issue.
Undisputed Performance
Regardless of how fast and easy a
product is to use, the bottom line is that
it has to provide the dentist and patient
with the best possible result. Recognized
by multiple independent product evaluation
organizations within the dental
industry as top picks, RelyX Cements
have proven their ability to perform and
to deliver to dentists what they
demand—high performance, ease of use,
speed, clinical reliability, and value. All of
the RelyX Cements are supported with
full technical product profiles and technical
data sheets available directly through
3M ESPE as well as by a significant body
of independent in vitro and clinical
research. The RelyX Cements are also
supported by 3M ESPE’s Customer Care
Center, which is a valuable resource for
information on products and procedures.
Through innovation in resin and filler
chemistries, paste/paste formulations,
and unique delivery systems, 3M ESPE
has successfully delivered to dentistry a
clinically proven line of cements that provide
performance, reliability, convenience,
selection, esthetics, and versatility.
With RelyX Unicem Cement leading the
way with more than 5 years of clinical
success, 3M ESPE has continued to
respond to dentists’ requests by expanding
the RelyX line of cements to serve a
variety of clinical applications with optimal
delivery systems. Even tried and true
products are frequently managed by
manufacturers to better suit and meet the
demands of dentistry as more and more
technologies become available. The clinical
longevity and patient acceptance that
RelyX Cements provide for indirect
restorations is undisputed.
Reference
1 - Piwowarczyk A, Lauer HC, Sorensen JA. In
vitro shear bond strength of cementing agents
to fixed prosthodontic restorative materials. J
Prosthet Dent. 2004 Sep;92(3):265-73.
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