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What is Protapers of same tip diameter are and explain in detail?
PROTAPER INSTRUMERNTS

A unique feature of Pro Taper instructions is each one has changing percentage tapers over the length of the cutting blades.
Pro taper instruments have convex, triangular cross – sections, a changing helical angle and push over their cutting blades and a non-cutting, modified guiding tip.
The Pro Taper system is comprised of three Shaping and three Finishing instruments.