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http://dx.doi.org/10.5395/JKACD.2006.31.1.001

COMPARISON OF SHAPING ABILITY OF ROTARY Ni-Ti FILE SYSTEMS USED BY UNDERGRADUATES  

Kang, Mun-Seong (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Kim, Hyeon-Cheol (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Hur, Bock (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Park, Jeong-Kil (Department of Conservative Dentistry, College of Dentistry, Pusan National University)
Publication Information
Restorative Dentistry and Endodontics / v.31, no.1, 2006 , pp. 1-10 More about this Journal
Abstract
The purpose of this study was to compare the shaping ability of three Ni-Ti file systems used by dental students or the experts and consequently to aid in choosing a proper systems for educational courses of dental students and beginners. Fifty students and ten dentists who have clinical experience over two years prepared 180 simulated root canals in resin blocks with three Ni-Ti systems; $ProFile^{(R)}\;(PF),\;HeroShaper^{(R)}\;(HS),\;K3^{TM}\;(K3)$. After preparation, the Ni-Ti files were evaluated for distortion and canal preparation time was recorded. The images of pre- and post-instrumented canals were scanned and superimposed. Amounts of increased canal widths, deviation, and centering ratio were calculated at apical 1, 3 and 5 mm levels and statistical analysis was performed The results were as follows : 1. HS showed the shortest preparation time and instrumented canal width in K3 was significantly larger than other groups (P<0.05). 2. At 1 and 3mm levels, all groups had outward deviation. In student group, at the 1mm level, PF had the least deviation (P<0.05). 3. In the centering ratio, the PF had the best centering ability compared to the others at 5mm level. At 1 and 3mm levels, HS and PF had better abilities than K3. Student group had better ratio than the expert at 3mm level with PF (P<0.05). Based on the results, it is surmised that the $ProFile^{(R)}$ is the safest and most ideal instrument for students and beginners.
Keywords
Undergraduates; Ni-Ti files; Hero Shaper ProFile; K3; Shaping ability;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Baumann MA, Roth A. Effect of experience on quality of canal preparation with rotary nickel-titanium files. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 88(6):714-718, 1999   DOI   ScienceOn
2 Clauder T, Baumann MA. ProTaper NT system. Dent Clin North Am 48(1):87-111, 2004   DOI   ScienceOn
3 Qualtrough AJ, Whitworth JM, Dummer PM. Preclinical endodontology: an international comparison. Int Endod J 32(5):406-414, 1999   DOI
4 Sonntag D, Guntermann A, Kim S.K., Stachniss V. Root canal shaping with manual stainless steel files and rotary Ni-Ti files performed by students. Int Endod J 36(4):246-255, 2003   DOI   ScienceOn
5 Sonntag D, Delschen S, Stachniww V. Root-canal shaping with manual and rotary Ni-Ti files performed by students. Int Endod J 36(11):715-723, 2003   DOI   ScienceOn
6 Hanni S, Schonenberger K, Peters OA, Barbakow F. Teaching an engine-driven preparation technique to undergraduates: initial observations. Int. Endod J 36(7):476-482, 2003   DOI   ScienceOn
7 Szep S, Gerhardt T, Leitzbach C, Luder W, Heidemann D. Preparation of severely curved simulated root canals using engine-driven rotary and conventional hand instruments. Clin Oral Investig 5(1):17-25, 2001   DOI
8 Yared GM, Dagher FE, Machtou P, Kulkarni GK. Influence of rotational speed, torque and operator proficiency on failure of Greater Taper files. Int Endod J 35(1):7-12, 2002   DOI   ScienceOn
9 Bergmans L, Van Cleynenbreugel J, Beullens M, Wevers M, Van Meerbeek B, Lambrechts P. Progressive versus constant tapered shaft design using NiTi rotary instruments. Int Endod J 36(4):288-295, 2003   DOI   ScienceOn
10 Calhoun G, Montgomery S. The effects of four instrumentation techniques on root canal shape. J Endod 14(6):273-277, 1988   DOI   ScienceOn
11 Parashos P, Messer HH. Questionnaire survey on the use of rotary nickel-titanium endodontic instruments by Australian dentists. Int Endod J 37(4):249-259, 2004   DOI   ScienceOn
12 Yared G, Bou Dagher F, Kulkarni K. Influence of torque control motors and the operator's proficiency on ProTaper failures. Oral Surg Oral Med Oral Pathol Oral Radio Endod 96(2):229-233, 2003   DOI   ScienceOn
13 Song YL, Bian Z, Fan B, Fan MW, Gutmann JL, Peng B. A comparison of instrument-centering ability within the root canal for three contemporary instrumentation techniques. Int Endod J 37:265-271, 2004   DOI   ScienceOn
14 Yared GM, Bou dagher FE, Machtou P. Cyclic fatigue of ProFile rotary instruments after clinical use. Int Endod J 33:204-207, 2000   DOI   ScienceOn
15 Schafer E, Schulz-Bongert U, Tulus G. Comparison of hand stainless steel and nickel titanium rotary instrumentation: a clinical study. J Endod 30(6):432-435, 2004   DOI   ScienceOn
16 Berutti E, Chiandussi G, Gaviglio I, Ibba A. Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments: ProTaper versus ProFile. J Endod 29(1):15-19, 2003   DOI   ScienceOn
17 Garip Y, Gunday M. The use of computed tomography when comparing nickel-titanium and stainless steel files during preparation of simulated curved canals. Int Endod J 34(6):452-457, 2001   DOI   ScienceOn
18 Hata G, Uemura M, Kato AS, Imura N, Novo NF, Toda T. A comparison of shaping ability using ProFile, GT file, and Flex-R endodontic instruments in simulated canals. J Endod 28(4):316-321, 2002   DOI   ScienceOn
19 Ankrum MT, Hartwell GR, Truitt JE. K3 Endo, ProTaper, and ProFile systems: breakage and distortion in severely curved roots of molars. J Endod 30(4):234-237, 2004   DOI   ScienceOn
20 Kosa DA, Marshall G, Baumgartner JC. An analysis of canal centering using mechanical instrumentation techniques. J Endod 25(6):441-445, 1999   DOI   ScienceOn
21 Dobo-Nagy C, Serban T, Szabo J, Nagy G, Madlena M. A comparison of the shaping characteristics of two nickel-titanium endodontic hand instruments. Int Endod J 35:283-288, 2002   DOI   ScienceOn
22 Gambarini. G. Cyclic fatigue of ProFile rotary instruments after prolonged clinical use. Int Endod J 34:386-389, 2001   DOI   ScienceOn
23 고현정, 백승호, 수종의 Engine driven NiTi file과 stainless steel K-file을 이요한 근관형성 후 근관의 조직형태학적 변화에 관한 연구. 대한치과보존학회지 27:6:612-618, 2002
24 Kim HC, Park JK, Hur B. Relative efficacy of three Ni-Ti file systems used by undergraduates. J Kor Acad Cons Dent 30(1):38-48, 2005   DOI
25 Yun HH, Kim SK. A comparison of the shaping abilities of 4 nickel- titanium rotary instruments in simulated root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 95(2):228-233, 2003   DOI   ScienceOn
26 Park SH, Cho KM, Kim JW. The Efficiency of the Ni-Ti Rotary files in Curved Simulated Canals Shaped by Novice Operators. J Kor Acad Cons Dent 28(2):146-155, 2003   과학기술학회마을   DOI
27 Qualtrough AJ, Dummer PM. Undergraduate endodontic teaching in the United Kingdom: an update. Int Endod J 30(4):234-239, 1997   DOI   ScienceOn
28 Schafer E, Vlassis M. Comparative investigation of two rotary nickel-titanium instruments: ProTaper versus RaCe. Part 1. Shaping ability in simulated curved canals. Int Endod J 37(4):229-238, 2004   DOI   ScienceOn
29 Schafer E. Shaping ability of Hero 642 rotary nickel-titanium instruments and stainless steel hand K-Flexofiles in simulated curved root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 92(2):215-220, 2001   DOI   ScienceOn
30 Yared GM, Kulkarni GK. Failure of ProFile Ni-Ti instruments used by an inexperienced operator under access limitations. Int Endod J 35:536-541, 2002   DOI   ScienceOn
31 박완기, 이희주, 허복. 다양한 엔진 구동형 파일의 근관 성형 능력 비교. 대한치과보존학회지 29:1:44-50, 2004
32 Ove A. Peters. PD Dr med dent, MS FICD. Current Challenges and Concepts in the Preparation of Root Canal Systems : A Review. J Endod 30(8):559-567, 2004   DOI   ScienceOn