ArticleInternational journal of dentistry2026
Effect of Various Root Canal Irrigation Techniques on Root Dentin Mechanical Properties: An In Vitro Study.
Article in International journal of dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Root canal irrigation is essential for effective canal disinfection, but activation techniques may alter the mechanical properties of root dentin. Objective: To evaluate the effects of four different root canal irrigation techniques on root dentin nanohardness, elastic modulus, and flexural strength. Methods: Forty extracted human mandibular premolars with single straight canals were randomly allocated to four groups ( Results: Traditional needle irrigation demonstrated the highest nanohardness (0.489 ± 0.064 GPa), whereas ultrasonic irrigation showed the lowest values (0.391 ± 0.021 GPa). Negative-pressure irrigation (0.466 ± 0.043 GPa) and XP-Endo Finisher irrigation (0.436 ± 0.056 GPa) showed intermediate values. Elastic modulus did not differ significantly among the groups ( Conclusion: Under the conditions of this in vitro study, ultrasonic irrigation reduced dentin nanohardness, whereas neither elastic modulus nor flexural strength was significantly affected by the irrigation protocol.
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