Micro-computed tomographic assessment of the shaping ability of the One Curve, One Shape, and ProTaper Next nickel-titanium rotary systems
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Objectives: This micro-computed tomographic (CT) study aimed to compare the shaping abilities of ProTaper Next (PTN), One Shape (OS), and One Curve (OC) files in 3-dimensionally (3D)-printed mandibular molars. Materials and Methods: In order to ensure standardization, 3D-printed mandibular molars with a consistent mesiobuccal canal curvature (45°) were used in the present study (n = 18). Specimens were instrumented with the OC, OS, or PTN files. The teeth were scanned pre- and post-instrumentation using micro-CT to detect changes of the canal volume and surface area, as well as to quantify transportation of the canals after instrumentation. Two-way analysis of variance was used for statistical comparisons. Results: No statistically significant differences were found between the OC and OS groups in the changes of the canal volume and surface area before and after instrumentation (p > 0.05). The OC files showed significantly less transportation than the OS or PTN systems for the apical section (p < 0.05). In a comparison of the systems, similar values were found at the coronal and middle levels, without any significant differences (p > 0.05). Conclusions: These 3 instrumentation systems showed similar shaping abilities, although the OC file achieved a lesser extent of transportation in the apical zone than the OS and PTN files. All 3 file systems were confirmed to be safe for use in mandibular mesial canals.
Abstract
Objectives: This micro-computed tomographic (CT) study aimed to compare the shaping abilities of ProTaper Next (PTN), One Shape (OS), and One Curve (OC) files in 3-dimensionally (3D)-printed mandibular molars. Materials and Methods: In order to ensure standardization, 3D-printed mandibular molars with a consistent mesiobuccal canal curvature (45°) were used in the present study (n = 18). Specimens were instrumented with the OC, OS, or PTN files. The teeth were scanned pre- and post-instrumentation using micro-CT to detect changes of the canal volume and surface area, as well as to quantify transportation of the canals after instrumentation. Two-way analysis of variance was used for statistical comparisons. Results: No statistically significant differences were found between the OC and OS groups in the changes of the canal volume and surface area before and after instrumentation (p > 0.05). The OC files showed significantly less transportation than the OS or PTN systems for the apical section (p < 0.05). In a comparison of the systems, similar values were found at the coronal and middle levels, without any significant differences (p > 0.05). Conclusions: These 3 instrumentation systems showed similar shaping abilities, although the OC file achieved a lesser extent of transportation in the apical zone than the OS and PTN files. All 3 file systems were confirmed to be safe for use in mandibular mesial canals.
참고문헌 (37)
- Peters OA, "Effects of four Ni-Ti preparation techniques on root canal geometry assessed by micro computed tomography", Int Endod J, 34, pp.221~230 (2001)
- Schilder H, "Cleaning and shaping the root canal", Dent Clin North Am, 18, pp.269~296 (1974)
- Mittal A, "Comparative assessment of canal transportation and centering ability of Reciproc and One Shape File systems using CBCT-an in vitro study", J Clin Diagn Res, 11, pp.ZC31~ZC34 (2017)
- Schäfer E, "Properties of endodontic hand instruments used in rotary motion. Part 2. Instrumentation of curved canals", J Endod, 21, pp.493~497 (1995)
- Celikten B, "Comparative evaluation of shaping ability of two nickel-titanium rotary systems using cone beam computed tomography", BMC Oral Health, 15, pp.32~ (2015)
- Thompson SA, "Shaping ability of lightspeed rotary nickel-titanium instruments in simulated root canals. Part 1", J Endod, 23, pp.698~702 (1997)
- Bergmans L, "Mechanical root canal preparation with NiTi rotary instruments: rationale, performance and safety. Status report for the American Journal of Dentistry", Am J Dent, 14, pp.324~333 (2001)
- Duque JA, "Influence of NiTi alloy on the root canal shaping capabilities of the ProTaper Universal and ProTaper Gold rotary instrument systems", J Appl Oral Sci, 25, pp.27~33 (2017)
- Alapati SB, "Metallurgical characterization of a new nickel-titanium wire for rotary endodontic instruments", J Endod, 35, pp.1589~1593 (2009)
- Zhou H, "An overview of the mechanical properties of nickel titanium endodontic instruments", Endod Topics, 29, pp.42~54 (2013)
- "One Curve, the Endo DNA" (2018)[URL]
- Peters OA, "A micro-computed tomographic assessment of root canal preparation with a novel instrument, TRUShape, in mesial roots of mandibular molars", J Endod, 41, pp.1545~1550 (2015)
- "MM.Tooth, as Real as a Natural Tooth, the Ideal Training Material" (2018)[URL]
- Feldkamp LA, "The direct examination of three-dimensional bone architecture in vitro by computed tomography", J Bone Miner Res, 4, pp.3~11 (1989)
- Gambill JM, "Comparison of nickel-titanium and stainless steel hand-file instrumentation using computed tomography", J Endod, 22, pp.369~375 (1996)
- Cangül Keskin, "Comparison of the shaping ability of novel thermally treated reciprocating instruments", Restorative Dentistry and Endodontics, 43(2), pp.1~7 (2018), 대한치과보존학회
- Bergmans L, "Progressive versus constant tapered shaft design using NiTi rotary instruments", Int Endod J, 36, pp.288~295 (2003)
- Bergmans L, "A methodology for quantitative evaluation of root canal instrumentation using microcomputed tomography", Int Endod J, 34, pp.390~398 (2001)
- Peters OA, "Changes in root canal geometry after preparation assessed by high-resolution computed tomography", J Endod, 27, pp.1~6 (2001)
- Versiani MA, "The anatomy of two-rooted mandibular canines determined using micro-computed tomography", Int Endod J, 44, pp.682~687 (2011)
- Versiani MA, "Micro-computed tomography study of oval-shaped canals prepared with the self-adjusting file, Reciproc, WaveOne, and ProTaper Universal systems", J Endod, 39, pp.1060~1066 (2013)
- Zhao D, "Root canal preparation of mandibular molars with 3 nickel-titanium rotary instruments : a micro-computed tomographic study", J Endod, 40, pp.1860~1864 (2014)
- Stern S, "Changes in centring and shaping ability using three nickel–titanium instrumentation techniques analysed by micro-computed tomography(μCT)", Int Endod J, 45, pp.514~523 (2012)
- Ertuğrul İF, "Effect of sodium hypochlorite on the cyclic fatigue resistance : a scanning electron microscopy evaluation", Microsc Res Tech, 82, pp.2089~2094 (2019)
- Arias A, "Torque and force induced by ProTaper Universal and ProTaper Next during shaping of large and small root canals in extracted teeth", J Endod, 40, pp.973~976 (2014)
- Ruddle CJ, "The shaping movement : fifth-generation technology", Dent Today, 32(94), pp.96~99 (2013)
- Capar ID, "Comparative study of different novel nickel-titanium rotary systems for root canal preparation in severely curved root canals", J Endod, 40, pp.852~856 (2014)
- Bürklein S, "Shaping ability of different nickel-titanium systems in simulated S-shaped canals with and without glide path", J Endod, 40, pp.1231~1234 (2014)
- Wu MK, "Leakage along apical root fillings in curved root canals. Part I: effects of apical transportation on seal of root fillings", J Endod, 26, pp.210~216 (2000)
- Uzunoglu E, "Comparison of canal transportation, centering ratio by cone-beam computed tomography after preparation with different file systems", J Contemp Dent Pract, 16, pp.360~365 (2015)
- Hieawy A, "Phase transformation behavior and resistance to bending and cyclic fatigue of ProTaper Gold and ProTaper Universal instruments", J Endod, 41, pp.1134~1138 (2015)
- Hülsmann M, "Mechanical preparation of root canals: shaping goals, techniques and means", Endod Topics, 10, pp.30~76 (2005)
- Burroughs JR, "Shaping ability of three nickel-titanium endodontic file systems in simulated S-shaped root canals", J Endod, 38, pp.1618~1621 (2012)
- Elnaghy AM, "Cyclic fatigue resistance of ProTaper Next nickel-titanium rotary files", Int Endod J, 47, pp.1034~1039 (2014)
- Ninan E, "Torsion and bending properties of shape memory and superelastic nickel-titanium rotary instruments", J Endod, 39, pp.101~104 (2013)
- Testarelli L, "Bending properties of a new nickel-titanium alloy with a lower percent by weight of nickel", J Endod, 37, pp.1293~1295 (2011)
- Uygun AD, "Variations in cyclic fatigue resistance among ProTaper Gold, ProTaper Next and ProTaper Universal instruments at different levels", Int Endod J, 49, pp.494~499 (2016)
