Nickel-Titanium Rotary Systems' Impact on Mandibular Molars: Finite Element Study

Posted: August 26, 2025 / Source: Pubmed Database

A study analyzed stress distribution in mandibular first molars with curved and straight mesial roots using different file systems via 3D finite element analysis. Results showed higher stress in curved roots, with ProTaper F3 recording the highest stresses. Curved roots pose a higher fracture risk. Nickel-titanium rotary systems with short cutting parts and low taper may reduce fracture risk in mesial roots of mandibular molars.
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