COMPARATIVE EVALUATION OF DENTINAL MICROCRACK FORMATION DURING ROOT CANAL PREPARATION USING HAND 'K' FILES AND THREE DIFFERENT NITI ROTARY SYSTEMS: AN IN VITRO STUDY

Dr Channesh Patel G S, Dr Deepu Patil, Dr Veeresh Tegginmani, Dr Nisar Ahmed, Dr Zubair Ahmed, Dr Zeenath Ambareen

Abstract


AIM:To evaluate and compare the amount of dentinal defects (microcracks) formed during the canal preparation using hand stainless steel 'K' files
and Mtwo, Hyflex CM and K3XF, NiTi rotary files.
MATERIALS AND METHODOLOGY:100 extracted teeth were randomly divided into 5 equal groups and canals were prepared in the
following manner, GROUP 1- Control group – Canals unprepared, GROUP 2- Hand Files, GROUP 3- Mtwo Files, GROUP 4- HYFLEX CM Files,
and GROUP 5- K3XF and all roots were cut horizontally at 3, 6, and 9 mm from the apex and were viewed under stereomicroscope, each specimen
was checked for the presence of dentinal defects.
RESULTS AND CONCLUSION: Maximum defects were found in Mtwo rotary system group followed by K3Xf and Hyflex CM groups, the
control and the hand files group did not show any defect. All the three experimental rotary systems caused dentinal microcracks.


Keywords


Dentinal Microcrack, Craze Lines, Dentinal Defect.

Full Text:

PDF

References


Wilcox LR, Roskelley C, Sutton T. The relationship of root canal enlargement to finger-spreader induced vertical root fracture. J Endod 1997; 23(8):533– 4.

Hyeon-Cheol Kim. Potential Relationship between design of nickel titanium rotary instruments and vertical root fracture. J Endod 2010;36(7):1195-99.

Bier CA, Shemesh H, Tanomaru-Filho M. The ability of different nickeltitanium rotary instruments to induce dentinal damage during canal preparation. J Endod2009; 35(2):236–8.

Mahran AH, AboEl-Fotouh MM. Comparison of effects of ProTaper, HeroShaper, and Gates Glidden Burs on cervical dentin thickness and root canal volume by using multislice computed tomography. J Endod 2008;34(10):1219-22.

Shemesh H, Bier CA, Wu MK, Tanomaru-Filho M, WesselinkPR.The effects of canal preparationand filling on the incidence of dentinal defects.IntEndod J 2009;42(3):208-13.

Yoldas O, Yilmaz S, Atakan G, Kuden C, Kasan Z. Dentinal microcrack formation during Root canal preparations by different NiTi Rotary instruments and the Self adjusting File. J Endod 2012;38(2):232-5.

Vagarli H, Patil C, YalagiV.Comparative Evaluation of root micro cracks by different rotary and reciprocating endodontic file systems. IOSR Journal of Dental and Medical Sciences 2015; 14(9):18-22.

Moghaddam KN, Derakhshan SL, Adeli M, Moghadam EH, Hashemzehi M, Nazari MS, Karamifar AA. Comparison of Dentinal Crack Formation with Reciproc, Mtwo and ProTaper Root Canal Preparation Systems.Middle East J Rehabil Health. 2016; 3(3):1-8.

Burklein S, Tsotsis P, Schafer E. Incidence of dentinal defects after root canal prepration reciprocating versus rotary instrumentation. J Endod 2013; 39(4):501-4.

Hamze F, Honardar K, Nazarimoghadam K. Comparison of two canal preparation techniques using Mtwo rotary instruments. Iran Endod J 2011; 6(4):150-4.

Crumpton LB, McClanahan CS. Endodontic rotary nickel-titanium instrument systems.Clinical Update2003;25(8):15-17.

Shen Y, Zhou HM, Wang Z, Campbell L, Zheng YF, Haapasalo M. Phase transformation behaviour and mechanical properties of thermomechanically treated K3XF nickel-titanium instruments. J Endod 2013; 39(7):919-23.

Rao MS, Shameem A, Nair R, Ghanta S, Thankachan RP, Issac JK. Comparison of the remaining dentin thickness in the root after hand and four rotary instrumentation techniques: an in vitro study. J Contemp Dent Pract 2013; 14(4):712-17.

Shen Y, Qian W, Abtin H, Gao Y, Haapasalo M. Fatigue testing of controlledmemory wire nickel-titanium rotary instruments. J Endod 2011;37(7):997-1001.

Capar ID, Arslan H, Akcay M, Uysal B. Effects of ProTaper Universal, ProTaper Next, and HyFlex instruments on crack formation in dentin. J Endod 2014;40(9):1482-4.

Hashem AA, Ghoneim AG, Lutfy RA, Foda MY, Omar GA. Geomatric analysis of root canals prepared by four rotary NiTi shaping systems. J Endod 2012;38(7):996-1000.

Ashraf F, Shankarappa P, Misra A, Sawhney A, Sridevi N, Singh A. A Stereomicroscopic Evaluation of Dentinal Cracks at Different Instrumentation Lengths by Using Different Rotary Files (ProTaper Universal, ProTaper Next, and HyFlex CM): An Ex Vivo Study. Scientifica2016;29(6):1-7.[17] Dane A, Capar ID, Arslan H, Akcay M, Uysal B. Effect of different torque settings on Effect of Different Torque settings on Crack Formation in Root Dentin. J Endod 2016;42(2):304-6.

Hin ES, Wu MK, Wesselink PR, ShemeshH.Effects of self adjusting file, Mtwo, and Protaper on the root canal wall. J Endod 2013;39(2):262-4.[20]Tamse.A. Vertical root fractures in endodontically treated teeth: diagnostic signs and clinical management. Endodontic Topics 2006;13(1):84-94. [21] Hulsmann M, Peters OA, DummerPM.Mechanical preparation of root canals: shaping goals, techniques and means. Endodontic Topics 2005; 10(1):30–76. [22] Sim TP, Knowles JC, Ng YL, Shelton J, Gulabivala K. Effect of sodium hypochlorite on mechanical properties of dentin and tooth surface strain.IntEndod J 2001;34(2):120-32


Refbacks

  • There are currently no refbacks.