4Rhodes JS, Ford TR, Lynch JA, et al. A comparison of two nickel-titanium instrumentation techniques in teeth using microcomputed tomography. Int Endod J,2000 ,33(3):279-285.
5Dowker SE, Davis GR, Elliott JC.X-ray microtomography: nondestructive three-dimensional imaging for in vitro endodontic studies. Oral Surg Oral Med Oral Pathol Oral Radiol Endod,1997,83(4):510-516.
6Nielsen RB, Alyassin AM, Peters DD, et al. Microcomputed tomography:an advanced system for detailed endodontic research.J Endod,1995,21(11):561-568.
7Wilson BL, Baumgartner JC .Comparison of spreader penetration during lateral compaction of .04 and .02 tapered gutta-percha. J Endod,2003 ,29(12):828-831.
8Best S, Watson P, Pilliar R,et al. Torsional fatigue and endurance limit of a size 30.06 ProFile rotary instrument. Int Endod J, 2004 ,37(6):370-373.
9Fife D, Gambarini G, Britto Lr L. Cyclic fatigue testing of ProTaper NiTi rotary instruments after clinical use. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2004 ,97(2):251-256.