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An Optical Fiber-Based Curvature Sensor for Endodontic Files Inside a Tooth Root Canal

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2 Author(s)
Chow-Shing Shin ; Dept. of Mech. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Min-Wei Lin

Fatigue fracture of rotary file inside the root canal of teeth is one of the important equipment failure modes in endodontic treatment. Knowing the curvature of a file in a root canal allows its bending strain and fatigue life to be estimated. This can help to avoid the highly undesirable fracture. Although the canal geometry can be revealed by X-ray radiograph, its 2-D nature may not correctly reflect the true curvature. Moreover, canal curvature is not equivalent to the curvature of an inserted file.

Published in:

Sensors Journal, IEEE  (Volume:10 ,  Issue: 6 )