UltraTester™ Bond Strength Testing Machine

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The Ultradent UltraTester machine is a compact, highly rigid testing machine specifically designed for capturing peak load values in compression tests with ranges from 0–1,000 pounds. It can be programmed for test speeds ranging from 0.1–15 mm/minute and can be set with default time limits and load limits as needed. Weighing only 15 pounds, the UltraTester machine is highly portable and is simple to use without extensive set up time or education to get started.

Unlike any other single-column testing machine, the UltraTester machine is extremely rigid, allowing it to hold its loading forces in a highly linear motion. This prevents loads from shifting or transferring during a test and also provides accurate, easily repeatable compression test results. The load cell, which senses the applied force, was chosen due to its ability to tolerate transverse or cross loading with little negative effect.

The UltraTester machine captures the peak value directly on the machine, making it ideal for training situations and student education. When used with the Ultradent Shear Bond Test Methods and specimen-preparation techniques, the UltraTester machine can be used to collect data rapidly to facilitate improved understanding of dental materials. The UltraTester machine is designed to be used with the Ultradent Shear Bond Test Method. This method uses a mold and clamp to create consistent cylindrical specimens that can be tested with the notched crosshead provided. The notched crosshead fits the composite adherend perfectly, allowing for the most uniform stress distribution across the bonded interface to achieve test results that closely approximate adhesive shear strength, rather than peel strength produced using a straight contact. The notched crosshead’s unique geometry allows only a small portion of the crosshead to contact the adherend, which minimizes difficulty in positioning the crosshead directly above the bonded surface.