Progressive versus constant tapered shaft design using NiTi rotary instruments.


AIM To evaluate the influence of a progressive versus constant tapered shaft design on canal preparation by NiTi rotary techniques. METHODOLOGY A XMCT-scanner and custom-made software were used to nondestructively analyse the mesial canals of 10 extracted mandibular molars in 3D with a spatial resolution of 12.5 microm. Specimens (n = 10 per group) were… (More)


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