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Fig. 1 | BMC Oral Health

Fig. 1

From: Micro-computed tomographic evaluation of the shaping ability of three nickel-titanium rotary systems in the middle mesial canal of mandibular first molars: an ex vivo study based on 3D printed tooth replicas

Fig. 1

Diagram of the progressive taper design (ProTaper Gold system) and constant taper design (Twisted File and OneShape system) of 3 NiTi instruments. The white arrow is OS 25/6% (D0 = 0.25 mm, D10 = 0.85 mm) and the black arrow is TF 30/4% (D0 = 0.30 mm, D10 = 0.70 mm); the 2 lines intersect at the level (D 2.5 = 0.40 mm) according to calculation

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BMC Oral Health

ISSN: 1472-6831

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