RelyX™ ARC Adhesive Resin Cement - Dale Dental

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Wear Rate
The occlusal margins of inlay restorations can be exposed to wear. In-vitro wear of
3M RelyX ARC Adhesive Resin Cement was compared with other materials in the
ACTA wear machine, a three-body abrasion testing instrument. The machine has two
motor-driven wheels that roll against each other in the presence of a third body abrasive
material. One of the wheels accommodates the test materials and the other contacts it
acting as an “antagonistic cusp.” As the wheels rotate, the third body abrasive material is
dragged between them creating three-body abrasion. Following wear cycles, volume loss
of the test materials is measured by profilometry.
Wear measurements were made at 10,000 cycle increments for a total of 100,000 cycles.
The wear results are illustrated in Figure 19. RelyX ARC resin cement, 3M Scotchbond
Resin Cement and Variolink® II resin cement displayed very low wear rates
compared to the other materials tested. All samples were light-cured with the exception
of Panavia® 21 and C&B Metabond®, both products are self-cure materials.
Figure 19.
In-vitro Wear Measurements
per 10,000 cycles, µm
RelyX ARC
Scotchbond Resin Cement
Panavia® 21
Variolink® II
C&B Metabond®
Resinomer®
0 5 10 15
Wear Measurements per 10,000 cycles, µm