Application of Modular Design Methodology for Endodontic Instrument Fatigue Test Bench.

Segura-Trujillo, C. R.; Orozco-Ocampo, Y. M.; Álvarez-Vargas, C. A.

In endodontic procedures, nickel-titanium (NiTi) instruments, which conform to the geometry of root canals, are employed to enhance the mechanical properties of files. However, the high cost of these instruments necessitates repeated use, increasing the risk of fatigue fractures during treatment. With various brands and types of endodontic instruments available in the market, characterizing the mechanical properties of files and their behavior under fatigue loads is essential. Currently, no standardized tests exist for assessing fatigue resistance, and each research study adopts its own equipment and methodology. This project aims to develop a test bench for fatigue testing of endodontic instruments without restrictions on material, crosssection, or external design, enabling both static and dynamic tests. The test bench employs a modular design strategy to identify components suited for modularization, utilizing readily available elements and manufacturing techniques such as 3D printing. The device operates on two axes, X and Y, and allows regulation of the instrument's depth of entry into the channel. Furthermore, it features an electronic system for automating dynamic and static tests, an LCD screen for menu navigation, and the ability to record the number of cycles until file fracture.

FATIGUE limit; FATIGUE testing machines; MODULAR design; ALLOY testing; STRESS fractures (Orthopedics)

Scientia et Technica, 2024, Vol 29, Issue 4, p148

0122-1701

Academic Journal

10.22517/23447214.25373