Surface evaluation of ProTaper Next and Logic after different use numbers, throughout scanning electron microscopy




Endodontics; Dental Instruments; Scanning electron microscopy.


The reuse of endodontic files is a common practice among professionals, although its single use is recommended by the manufacturer. This study aimed to compare the files surface of two heat treated rotating systems manufactured in NiTi: Files # 25/01 and # 25/06 of the ProDesign Logic system and files X1 and X2 of the ProTaper Next system, after 4 steps: unused, first, second and third use, through analysis under scanning electron microscopy. A total of 60 lower incisors were used with only one canal and 20 sets of files, divided into 4 groups (n = 10), according to the different times of use. The files of the control group were submitted to sterilization and placed in the Scanning Electron Microscopy device and the images of the surfaces were obtained and served as a control image. Subsequently, the files were subjected to the first instrumentation in the extracted teeth, washed in an ultrasonic vat with enzymatic detergent and again analyzed in SEM. These procedures were repeated until the third use. Qualitative statistics were used for the presence or absence of surface alteration and application of the chi-square test of partition (p <0.05). The results showed that there was no significant difference between the presence of changes in the experimental times, and after the first use, all files (25.01, 25.06, X1 and X2) showed changes on the surface. It is concluded that the endodontic instruments used in the present research underwent significant superficial changes after the first use, contraindicating their reuse.


Alapati, S. B., Brantley, W. A., Iijima, M., Clark, W. A., Kovarik, L., Buie, C., & Johnson, W. B. (2009). Metallurgical characterization of a new nickel-titanium wire for rotary endodontic instruments. Journal of endodontics, 35(11), 1589-1593.

Arens, F. C., Hoen, M. M., Steiman, H. R., & Dietz Jr, G. C. (2003). Evaluation of single-use rotary nickel-titanium instruments. Journal of Endodontics, 29(10), 664-666.

Barbosa, F. O. G., Gomes, J. A. D. C. P., & de Araújo, M. C. P. (2007). Influence of previous angular deformation on flexural fatigue resistance of K3 nickel–titanium rotary instruments. Journal of endodontics, 33(12), 1477-1480.

Campos, A. E. A., de Jesus Soares, A., da Silva Limoeiro, A. G., Cintra, F. T., Frozoni, M., & Campos, G. R. (2021). Cutting efficiency of ProDesign R, Reciproc Blue and WaveOne Gold reciprocating instruments. Research, Society and development, 10(3), e1710313028-e1710313028.

Çelik, D., Taşdemir, T., & Er, K. (2013). Comparative study of 6 rotary nickel-titanium systems and hand instrumentation for root canal preparation in severely curved root canals of extracted teeth. Journal of endodontics, 39(2), 278-282.

Coelho, B. S., Amaral, R. O. J. F. D., Leonardi, D. P., Marques-da-Silva, B., Silva-Sousa, Y. T. C., Carvalho, F. M. A. D., & Baratto-Filho, F. (2016). Performance of three single instrument systems in the preparation of long oval canals. Brazilian dental journal, 27(2), 217-222.

Da Cunha Peixoto, I. F., Pereira, É. S. J., da Silva, J. G., Viana, A. C. D., Buono, V. T. L., & de Azevedo Bahia, M. G. (2010). Flexural fatigue and torsional resistance of ProFile GT and ProFile GT series X instruments. Journal of endodontics, 36(4), 741-744.

De Menezes, S. E. A. C., Batista, S. M., Lira, J. O. P., & de Melo Monteiro, G. Q. (2017). Cyclic fatigue resistance of WaveOne Gold, ProDesign R and ProDesign Logic files in curved canals in vitro. Iranian endodontic journal, 12(4), 468.

Fernández-Pazos, G., Martín-Biedma, B., Varela-Patiño, P., Ruíz-Piñón, M., & Castelo-Baz, P. (2018). Fracture and deformation of ProTaper Next instruments after clinical use. Journal of clinical and experimental dentistry, 10(11), e1091.

Inan, U., & Gonulol, N. (2009). Deformation and fracture of Mtwo rotary nickel-titanium instruments after clinical use. Journal of endodontics, 35(10), 1396-1399.

Miranzi, B. A. S., Borges, G. A., Miranzi, A. J. S., Menezes, F. H. D., Miranzi, M. A. S., & Borges, L. H. (2011). Apical and cervical displacement produced by hand and engine-driven stainless steel and nickel-titanium instruments in simulated curved root canal. Brazilian Journal of Oral Sciences, 10(2), 136-139.

Pécora, J. D., & Capelli, A. (2006). Shock of paradigms on the instrumentation of curved root canals. Brazilian dental journal, 17(1), 3-5.

Rapisardaa, E., Bonaccorsob, A., Tripib, T. R., & Condorellic, G. G. (1999). Effect of sterilization on the cutting efficiency of rotary nickel-titanium endodontic files. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 88(3), 343-347.

Schilder H. (1974). Cleaning and shaping the root canal. Dent Clin North Am, 18:269-296.

Seago, S. T., Bergeron, B. E., Kirkpatrick, T. C., Roberts, M. D., Roberts, H. W., Himel, V. T., & Sabey, K. A. (2015). Effect of repeated simulated clinical use and sterilization on the cutting efficiency and flexibility of Hyflex CM nickel-titanium rotary files. Journal of endodontics, 41(5), 725-728.

Shen, Y., Coil, J. M., & Haapasalo, M. (2009a). Defects in nickel-titanium instruments after clinical use. Part 3: a 4-year retrospective study from an undergraduate clinic. Journal of Endodontics, 35(2), 193-196.

Shen, Y., Coil, J. M., Mclean, A. G., Hemerling, D. L., & Haapasalo, M. (2009b). Defects in nickel-titanium instruments after clinical use. Part 5: single use from endodontic specialty practices. Journal of endodontics, 35(10), 1363-1367.

Shen, Y., Qian, W., Abtin, H., Gao, Y., & Haapasalo, M. (2012). Effect of environment on fatigue failure of controlled memory wire nickel-titanium rotary instruments. Journal of endodontics, 38(3), 376-380.

Shen, Y., Qian, W., Abtin, H., Gao, Y., & Haapasalo, M. (2011). Fatigue testing of controlled memory wire nickel-titanium rotary instruments. Journal of endodontics, 37(7), 997-1001.

Shen, Y., & Haapasalo, M. (2008). Three-dimensional analysis of cutting behavior of nickel-titanium rotary instruments by microcomputed tomography. Journal of endodontics, 34(5), 606-610.

Thompson, M., Sidow, S. J., Lindsey, K., Chuang, A., & McPherson III, J. C. (2014). Evaluation of a new filing system's ability to maintain canal morphology. Journal of endodontics, 40(6), 867-870.

Tsujimoto, M., Irifune, Y., Tsujimoto, Y., Yamada, S., Watanabe, I., & Hayashi, Y. (2014). Comparison of conventional and new-generation nickel-titanium files in regard to their physical properties. Journal of endodontics, 40(11), 1824-1829.

Vieira, E. P., França, E. C., Martins, R. C., Buono, V. T. L., & Bahia, M. G. A. (2008). Influence of multiple clinical use on fatigue resistance of ProTaper rotary nickel‐titanium instruments. International Endodontic Journal, 41(2), 163-172.

Vinothkumar, T. S., Miglani, R., & Lakshminarayananan, L. (2007). Influence of deep dry cryogenic treatment on cutting efficiency and wear resistance of nickel–titanium rotary endodontic instruments. Journal of endodontics, 33(11), 1355-1358.

Walia, H., Brantley, W. A., & Gerstein, H. (1988). An initial investigation of the bending and torsional properties of Nitinol root canal files. Journal of endodontics, 14(7), 346-351.

Ye, J., & Gao, Y. (2012). Metallurgical characterization of M-Wire nickel-titanium shape memory alloy used for endodontic rotary instruments during low-cycle fatigue. Journal of endodontics, 38(1), 105-107.

Yguel-Henry, S., Vannesson, H., & Von Stebut, J. (1990). High precision simulated cutting efficiency measurement of endodontic root canal instruments: influence of file configuration and lubrication. Journal of endodontics, 16(9), 418-422.



How to Cite

SANTOS, P. E. S. .; LIMOEIRO, A. G. da S. .; NASCIMENTO, W. M.; BUENO, C. E. da S.; ROSAS, C. A. P.; KATO, A. S. Surface evaluation of ProTaper Next and Logic after different use numbers, throughout scanning electron microscopy. Research, Society and Development, [S. l.], v. 10, n. 4, p. e53110414446, 2021. DOI: 10.33448/rsd-v10i4.14446. Disponível em: Acesso em: 23 mar. 2023.



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