1Siqueira JF Jr,ROas IN.Bacterialo pathogenesis and mediators in apical periodontitis[J].Braz Dent J 2007 18(4): 267-280.
2Walia HM,Brantley WA,Gerstein H.An initial investigation of the bending and torsional properties of Nitinol root canal files[J].J Endod 1988,14:346-351.
3Esposito PT,Cunning ham CJ.A comparison of canal preparation with nickel-titanium and stainless instruments[J]. J Endod, 1995,21:146-151.
5Parashos P,Messer HH.The diffusion of innovation in dentistry:a review using rotary nickel-titanium technology as an example [J].Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2006,101:395-401.
6Parashos P,Messer HH.Rotary NiTi instrument fracture and its consequences[J].J Endod,2006,32:1031-1043.
4[3]Messer HH.Clinical judgement and decision makong in endodontics[J].Aust Endod J,1999,25(3):124-132
5[4]Yare GM,Bou Dagher FE,Machtou P.Failure of Profile instruments used with high and lou torque motors[J].Int Endod J,2001,34(6):471-475
6[5]Gotte P,Vignoletti GF.Indications for the treatment of bone rarefacions of endodontic origin[J].Minerva Stomatal,1980,29(5):373-384
7[6]Himel VT,Levitan ME.Use of nickel titanium instruments for cleaning and shaping root canal systems[J].Tex Dent J,2003,120(3):262-268
8[7]Imfeled TN.Prevalence and quality of endodontic treatment inelderly urban population of Switzerland[J].J Endod,1991,17(10):604-607
9[8]Walia HM,Brantley WA,Cerstein H.An initial investigation of the bending and torsional properties of Nitinol root canal files[J].J Endod,1988,14(7):346-351
10[9]Glossen CR,Haller RH,Dove SB,et al.A comparison of root canal preparations using Ni-Ti hand,Ni-Ti engine-driven,and K-Flex endodontic instruments[J].J Endod,1995,21(3):146-151