Relationship between file size and stiffness of stainless steel ... | 合法醫療器材資訊網

由JJCamps著作·1994·被引用27次—Threegroupsofinstrumentsweretested:FlexofilesfromtheMaillefercompany,KFilesandK-FlexfromtheKerrcompany.Flexofileshaveatria…

The purpose of this study was to evaluate the relationship existing between file size and stiffness for three endodontic files of different cross-sections. Three groups of instruments were tested: Flexofiles from the Maillefer company, K Files and K-Flex from the Kerr company. Flexofiles have a triangular cross-section, K Files a square cross-section, and K-Flex instruments a rhombus cross-section from size 15 to size 40. For each group, 10 files from size 15 to size 40 were compared according to ANSI/ADA specification N degrees 28 for bending moment evaluation. There was a statistical difference between the three groups: the square cross-section K files presented a larger bending moment than the rhombus cross-section K Flex, which presented a higher bending moment than the triangular cross-section Flexofiles. There was an exponential relationship between file size and bending moment.