In-Vitro study to Assess Effect of a Glide Path on Canal Transportation and Centering Ratio in Double Curved canals.




endodontic treatment, canal centric, R-Pilot system, deviation amount.


Objective: In endodontic treatment, creating a glide path became one of the recommended essential principles to obtain a safe preparation as possible; so the aim of the research is to evaluate the efficiency of the R-Pilot system in glide path preparation within the double curved canals.

Study design: A laboratory study to assess the efficiency R-Pilot mechanical patency system on the shape marinating of the canal. Those criteria were used to evaluate the change in the original shape of the canal, Canal Transportation and Centering Ratio. The data were analyzed using SPSS V.13 program and the correlation between the variables were defined using descriptive statistics and inductive statistical tests (chi-square, T Student for independent samples, ANOVA).

Results: no significant difference between the two glide path creation systems was found in terms of the deviation amount from the canal centric. whereas, between the R-Pilot system and the manual preparation, significant difference was found in the preserving rate of the canal centric at both the coronal area and the entire canal.

Conclusion: glide path creation in the previously mentioned methods with confirmation on the importance of the mechanical patency in terms of speed, Reducing the effort and burden imposed on the practitioner compared to the use of manual files. XP Endo shaper had lower deviation values and more ability to save the shape and centric of the canal.

Author Biographies

Raghad Alhalabi, Department of Operative Dentistry, Faculty of Dentistry, Damascus University, Damascus, Syria.

Department of Operative Dentistry

Mohammad Salem Rekab, Department of Operative Dentistry, Faculty of Dentistry, Damascus University, Damascus, Syria.

Department of Operative Dentistry

Khaldaon hossein Alhroob, Department of Periodontology, Faculty of Dentistry, Damascus University, Damascus, Syria.

Department of Periodontology

Maher Al-assaf, Department of Oral Histology and Pathology, Faculty of Dentistry, Damascus University, Damascus, Syria.

Department of Oral Histology and Pathology


Comparative Evaluation of Root Canal Transportation by Three NiTi Single-File Systems in Curved Canals: A Cone Beam Computed Tomography Study. Saberi E, Farhad-Mollashahi N, Bijari S, Daryaeian M. Int J Dent. 2018 May;14:4151692. doi: 10.1155/2018/4151692. PMID: 29861728.

Shaping ability of ProTaper Universal, WaveOne and ProTaper Next in simulated L-shaped and S-shaped root canals. Wu H, Peng C, Bai Y, Hu X, Wang L, Li C. BMC Oral Health. 2015 Mar;15(1):27. doi: 10.1186/s12903-015-0012-z. PMID: 25886847.

Analysis of Ni-Ti versus stainless steel instrumentation in resin simulated canals. Coleman CL, Svec TA. J Endod. 1997 Apr;23(4):232-235. doi: 10.1016/S0099-2399(97)80053-2. PMID: 9594772.

Bending resistance and cyclic fatigue life of Reciproc Blue, WaveOne Gold, and Genius files in a double (S-shaped) curved canal. Özyürek T, Gündoğar M, Yılmaz K, Uslu G. J Dent Res Dent Clin Dent Prospects. 2017 Fall;11(4):241-246. doi: 10.15171/joddd.2017.042. PMID: 29354251.

Safe root canal preparation using reciprocating nickel-titanium instruments. Ha JH. Restor Dent Endod. 2015 Aug;40(3):253-254. doi: 10.5395/rde.2015.40.3.253. PMID: 26295031.

The effect of preparation procedures on original canal shape and on apical foramen shape. Weine FS, Kelly RF, Lio PJ. J Endod. 1975 Aug;1(8):255-262. doi: 10.1016/S0099-2399(75)80037-9. PMID: 10697472.

The shaping effects of three nickel-titanium rotary instruments in simulated S-shaped canals. Yoshimine Y, Ono M, Akamine A. J Endod. 2005 May;31(5):373-275. doi: 10.1097/01.don.0000140568.40462.43. PMID: 15851932.

Shaping ability of ProTaper NEXT, ProTaper Universal and iRace files in simulated S-shaped canals. Hiran-us S, Pimkhaokham S, Sawasdichai J, Ebihara A, Suda H. Aust Endod J. 2016 Apr;42(1):32-36. doi: 10.1111/aej.12117. PMID: 26420685.

Apical root canal transportation and remaining dentin thickness associated with ProTaper Universal with and without PathFile. Zanette F, Grazziotin-Soares R, Flores ME, Camargo Fontanella VR, Gavini G, Barletta FB. J Endod. 2014 May;40(5):688-693. doi: 10.1016/j.joen.2013.09.001. PMID: 24767565.

Comparison of glide paths created with K-files, PathFiles, and the ProGlider file, and their effects on subsequent WaveOne preparation in curved canals. Zheng L, Ji X, Li C, Zuo L, Wei X. BMC Oral Health. 2018 Aug 29;18(1):152. doi: 10.1186/s12903-018-0614-3. PMID: 30157822.

Comparison among manual instruments and PathFile and Mtwo rotary instruments to create a glide path in the root canal preparation of curved canals. Alves Vde O, Bueno CE, Cunha RS, Pinheiro SL, Fontana CE, de Martin AS. J Endod. 2012 Jan;38(1):117-120. doi: 10.1016/j.joen.2011.10.001. PMID: 22152634.

Endodontic update 2006. West J. J Esthet Restor Dent. 2006;18(5):280-300. doi: 10.1111/j.1708-8240.2006.00039.x. PMID: 16987326.

A dozen ways to prevent nickel-titanium rotary instrument fracture. Di Fiore PM. J Am Dent Assoc. 2007 Feb;138(2):196-201; quiz 249. doi: 10.14219/jada.archive.2007.0136. PMID: 17272374.

Peters O A, Koka R S (2009) Preparation of coronal and radicular spaces.

Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography. Elashiry MM, Saber SE, Elashry SH. Eur J Dent. 2020 Feb;14(1):70-76. doi: 10.1055/s-0040-1701393. PMID: 32005040.

Shaping Ability of XP Endo Shaper File in Curved Root Canal Models. Alfadley A, Alrajhi A, Alissa H, Alzeghaibi F, Hamadah L, Alfouzan K, Jamleh A. Int J Dent. 2020 Feb 17;2020:4687045. doi: 10.1155/2020/4687045. PMID: 32148503.

Canal transportation and centering ratio after preparation in severely curved canals: analysis by micro-computed tomography and double-digital radiography. Poly A, AlMalki F, Marques F, Karabucak B. Clin Oral Investig. 2019 Dec;23(12):4255-4262. doi: 10.1007/s00784-019-02870-8. PMID: 30834991.

Higher Speed and No Glide Path: A New Protocol to Increase the Efficiency of XP Shaper in Curved Canals-An In Vitro Study. Webber M, Piasecki L, Jussiani EI, Andrello AC, Dos Reis PJ, Azim KA, Azim AA. J Endod. 2020 Jan;46(1):103-109. doi: 10.1016/j.joen.2019.10.014. PMID: 31761330.

hanges in root canal geometry after preparation assessed by high-resolution computed tomography. Peters OA, Laib A, Göhring TN, Barbakow F. C. J Endod. 2001 Jan;27(1):1-6. doi: 10.1097/00004770-200101000-00001. PMID: 11487156.

A microcomputed tomography evaluation of the shaping ability of three thermally-treated nickel-titanium rotary file systems in curved canals. Huang Z, Quan J, Liu J, Zhang W, Zhang X, Hu X. J Int Med Res. 2019 Jan;47(1):325-334. doi: 10.1177/0300060518801451. PMID: 30282507.

Transportation assessment in artificial curved canals after instrumentation with Reciproc, Reciproc Blue, and XP-endo Shaper Systems. Pacheco-Yanes J, Gazzaneo I, Pérez AR, Armada L, Neves MAS. J Investig Clin Dent. 2019 Aug;10(3):e12417. doi: 10.1111/jicd.12417. PMID: 30955238.

Comparative analysis of canal transportation and centring ability of three Ni-Ti rotary endodontic systems: Protaper®, MTwo® and Revo-S™, assessed by micro-computed tomography. Vallaeys K, Chevalier V, Arbab-Chirani R. Odontology. 2016 Jan;104(1):83-88. doi: 10.1007/s10266-014-0176-z. PMID: 25248755.

Shaping ability of 4 different single-file systems in simulated S-shaped canals. Saleh AM, Vakili Gilani P, Tavanafar S, Schäfer E. J Endod. 2015 Apr;41(4):548-552. doi: 10.1016/j.joen.2014.11.019. PMID: 25576206.

A comparison of the shaping ability of three nickel-titanium rotary instruments: a micro-computed tomography study via a contrast radiopaque technique in vitro. Wei Z, Cui Z, Yan P, Jiang H. BMC Oral Health. 2017 Jan 9;17(1):39. doi: 10.1186/s12903-016-0326-5. PMID: 28068971.

Microcomputed Assessment of Transportation, Centering Ratio, Canal Area, and Volume Increase after Single-file Rotary and Reciprocating Glide Path Instrumentation in Curved Root Canals: A Laboratory Study. Aydın ZU, Keskin NB, Özyürek T, Geneci F, Ocak M, Çelik HH. J Endod. 2019 Jun;45(6):791-796. doi: 10.1016/j.joen.2019.02.012. PMID: 30935620.

Shaping ability of different nickel-titanium systems in simulated S-shaped canals with and without glide path. Bürklein S, Poschmann T, Schäfer E. J Endod. 2014 Aug;40(8):1231-1234. doi: 10.1016/j.joen.2014.01.043. PMID: 25069939.

Cleaning and shaping the root canal. Schilder H. Dent Clin North Am. 1974 Apr;18(2):269-296. PMID: 4522570.

A Micro-computed Tomography Evaluation of the Shaping Ability of Two Nickel-titanium Instruments, HyFlex EDM and ProTaper Next. Venino PM, Citterio CL, Pellegatta A, Ciccarelli M, Maddalone M. J Endod. 2017 Apr;43(4):628-632. doi: 10.1016/j.joen.2016.11.022. PMID: 28215346.

Micro-Computed Tomographic Evaluation of Canal Transportation and Centering Ability of 4 Heat-Treated Nickel-Titanium Systems. Razcha C, Zacharopoulos A, Anestis D, Mikrogeorgis G, Zacharakis G, Lyroudia K. J Endod. 2020 May;46(5):675-681. doi: 10.1016/j.joen.2020.01.020. PMID: 32171564.






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