| Abstrakt: |
A new report from Tokyo Medical and Dental University (TMDU) presents fresh data on oral health. The study focuses on the screw-in effect of nickel-titanium rotary endodontic files, which can lead to instrument fracture and over-instrumentation. The researchers examined the impact of repeated up-and-down movements on torque/force generation, surface defects, and canal shaping ability. The study found that a single up-and-down movement increased the screw-in force of subsequent instruments in severely curved canals, and that different instruments had varying effects on stress generation and canal maintenance. The findings provide valuable insights for dental practitioners. [Extracted from the article] |
