TODENTJ-25-03-2019_TODENTJ-12-173 1553507310 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 02 22 2018 12 1 G. Vittoria G. Pantaleo A. Blasi G. Spagnuolo A. Iandolo M. Amato Background: There are a lot of techniques to obturate the root canals, but lateral condensation of gutta-percha is the most used one. An important aspect of thermafil is the error margin tolerated by the manufacturer in the production of plastic carriers. In literature, there is no evidence about discrepancy percentage between different carriers. It is demonstrated that the error margin of gutta-percha is 0.5% and is 0.2% for metal files (ISO standards). Objective: The aim of this study was to evaluate the real dimensions of thermafil plastic carriers observed by the stereo microscope measuring the dimensional discrepancy between them. Methods: For this study, 80 new thermafil (Dentsply Maillefer) have been selected. 40 thermafil 0.25 and 40 thermafil 0.30. Through 60X stereo microscope, the dimensions of the plastic carrier tips have been measured. The dimensions of the plastic carrier were also measured after a heating cycle. ZL GAL 11TUSM (Zetaline stereo evolution) microscope was used to observe the samples. Measurements were made through a dedicated software (Image Focus). All samples were analysed at 60X. Results: A non-parametric paired test (Wilcoxon test) was used to compare baseline and after heating values; p-values ≤ 0.05 were assumed to be statistically significant. Conclusion: The samples we measured showed a mean value of the diameters in Thermafil 25 that was 0.27 mm, for Thermafil 30 the mean value was 0.33 mm. We have measured a dimensional variable of 8% in the 25 group while in group 30 the maximum possible variation found was 4%, that’s why we propose a new protocol of obturation with thermafil. We can also conclude that a single heating process does not affect clinically the plastic carrier dimensions. 02 22 2018 173 180 TODENTJ-12-173 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2017-11-11 2018-01-22 2018-01-31 2018-02-22 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601812010173 1553507310 https://opendentistryjournal.com/VOLUME/12/PAGE/173/ https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-173/TODENTJ-12-173.xml Dent. Update Gulabivala K. 21 73 1994 Gulabivala K, Leung SF. Review of a new root canal obturation technique. Dent Update 1994; 21 (2) : 73-78, 80-83. J. Int. Oral Health Emmanuel S. 5 35 2013 Emmanuel S, Shantaram K, Sushil KC, Manoj L. An in-vitro evaluation and comparison of apical sealing ability of three different obturation technique - lateral condensation, Obtura II, and Thermafil. J Int Oral Health 2013; 5 (2) : 35-43. J. Conserv. Dent. Anantula K. 14 57 2011 10.4103/0972-0707.80748 Anantula K, Ganta AK. Evaluation and comparison of sealing ability of three different obturation techniques: Lateral condensation, Obtura II, and GuttaFlow: An in vitro study. J Conserv Dent 2011; 14 (1) : 57-61. Microsc. Res. Tech. Ersoy I. 78 404 2015 10.1002/jemt.22487 Ersoy I, Evcil MS. Evaluation of the effect of different root canal obturation techniques using two root canal sealers on the fracture resistance of endodontically treated roots. Microsc Res Tech 2015; 78 (5) : 404-7. G. Ital. Endod. Greco K. 25 97 2011 10.1016/j.gien.2011.10.001 Greco K, Carmignani E, Cantatore G. The Thermafil root canal obturation system. G Ital Endod 2011; 25 : 97-109. Gen. Dent. Lee C.Q. 46 378 1998 Lee CQ, Cobb CM, Robinson SJ, LaMartina T, Vo T. In vitro evaluation of the Thermafil technique with and without gutta percha coating. Gen Dent 1998; 46 (4) : 378-81. J. Endod. Johnson B. 19 266 1993 10.1016/S0099-2399(06)80453-X Johnson B, Lasater D. Adaptation of thermafil components to canal walls. J Endod 1993; 19 (6) : 266. J. Endod. Beasley R.T. 39 125 2013 10.1016/j.joen.2012.10.014 Beasley RT, Williamson AE, Justman BC, Qian F. Time required to remove guttacore, thermafil plus, and thermoplasticized gutta-percha from moderately curved root canals with protaper files. J Endod 2013; 39 (1) : 125-8. J. Clin. Exp. Dent. Marques-Ferreira M. 9 e56 2017 Marques-Ferreira M, Abrantes M, Ferreira HD, Caramelo F, Botelho MF, Carrilho EV. Sealing efficacy of system B versus Thermafil and Guttacore obturation techniques evidenced by scintigraphic analysis. J Clin Exp Dent 2017; 9 (1) : e56-60. J. Contemp. Dent. Pract. Al-Kahtani A.M. 14 777 2013 10.5005/jp-journals-10024-1402 Al-Kahtani AM. Carrier-based root canal filling materials: A literature review. J Contemp Dent Pract 2013; 14 (4) : 777-83. Int. Endod. J. Pathomvanich S. 29 327 1996 10.1111/j.1365-2591.1996.tb01393.x Pathomvanich S, Edmunds DH. The sealing ability of Thermafil obturators assessed by four different microleakage techniques. Int Endod J 1996; 29 (5) : 327-34. J. Endod. Clark D.S. 19 4 1993 10.1016/S0099-2399(06)81032-0 Clark DS, ElDeeb ME. Apical sealing ability of metal versus plastic carrier Thermafil obturators. J Endod 1993; 19 (1) : 4-9. J Istanb Univ Fac Dent Yilmaz A. 51 37 2017 10.17096/jiufd.95769 Yilmaz A, Karagoz-Kucukay I. In vitro comparison of gutta-percha-filled area percentages in root canals instrumented and obturated with different techniques. J Istanb Univ Fac Dent 2017; 51 (2) : 37-42. G. Ital. Endod. Pasqualini D. 19 242 2005 Pasqualini D, Beccio R, Calabrese N, Cantatore G, Berutti E. In vitro evaluation of the quality of gutta-percha apical sealer with different sizes of Thermafil obturators. G Ital Endod 2005; 19 : 242-6. Fogorv. Sz. Iványi I. 101 65 2008 Iványi I, Gyurkovics M, Várnagy E, Rosivall L, Fazekas A. Comparison of guttapercha points of different brands. Fogorv Sz 2008; 101 (2) : 65-9. Indian J. Dent. Res. Jindal D. 28 175 2017 10.4103/0970-9290.207785 Jindal D, Sharma M, Raisingani D, Swarnkar A, Pant M, Mathur R. Volumetric analysis of root filling with cold lateral compaction, Obtura II, Thermafil, and Calamus using spiral computerized tomography: An in vitro Study. Indian J Dent Res 2017; 28 (2) : 175-80. Clin. Oral Investig. Pirani C. Pirani C, Iacono F, Gatto MR, et al. Outcome of secondary root canal treatment filled with Thermafil: A 5-year follow-up of retrospective cohort study. Clin Oral Investig in press Int. J. Clin. Pediatr. Dent. Samadi F. 7 1 2014 10.5005/jp-journals-10005-1224 Samadi F, Jaiswal J, Saha S, et al. A comparative evaluation of efficacy of different obturation techniques used in root canal treatment of anterior teeth: An in vitro study. Int J Clin Pediatr Dent 2014; 7 (1) : 1-5. Aust. Endod. J. De-Deus G. 33 55 2007 10.1111/j.1747-4477.2007.00047.x De-Deus G, Maniglia-Ferreira CM, Gurgel-Filho ED, Paciornik S, Machado AC, Coutinho-Filho T. Comparison of the percentage of gutta-percha-filled area obtained by Thermafil and System B. Aust Endod J 2007; 33 (2) : 55-61. Int. Endod. J. Gencoglu N. 41 836 2008 10.1111/j.1365-2591.2008.01434.x Gencoglu N, Yildirim T, Garip Y, Karagenc B, Yilmaz H. Effectiveness of different gutta-percha techniques when filling experimental internal resorptive cavities. Int Endod J 2008; 41 (10) : 836-42. J. Int. Soc. Prev. Community Dent. Cervino G. 7 64 2017 10.4103/jispcd.JISPCD_521_16 Cervino G, Fiorillo L, Spagnuolo G, et al. Interface between MTA and dental bonding agents: Scanning electron microscope evaluation. J Int Soc Prev Community Dent 2017; 7 (1) : 64-8. Open Dent. J. Simeone M. 8 229 2014 Simeone M, Santis RD, Ametrano G, et al. Temperature profiles along the root with gutta-percha warmed through diffrent heat sources. Open Dent J 2014; 8 : 229-35.