니켈티타늄 파일의 부식에 영향을 미치는 다양한 환경 조건 비교
Comparative analysis of various corrosive environmental conditions for NiTi rotary files
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초록
The aim of the present study is to compare the corrosion tendency using two kinds of NiTi files in the various environmental conditions through the visual examination and electrochemical analysis. ProTaper Universal S2, 21 ㎜ (Dentsply Maillefer, Ballaigues, Switzerland) and Hero 642, 0.06 tapers, size 25, 21 ㎜ (Micromega, Besancon, France) rotary instruments were tested. The instruments were randomly divided into eighteen groups (n = 5) by the immersion temperature, the type of solution, the brand of NiTi rotary instrument and the presence of mechanical loading. Each file was examined at various magnifications using Scanning Electron Microscope (JEOL, Akishima, Tokyo, Japan) equipped with energy dispersive X-ray microanalysis (EDX). EDX was used to determine the components of the endodontic file alloy in corroded and noncorroded areas. The corrosion resistance of unused and used NiTi files after repeated uses in the human teeth was evaluated electrochemically by potentiodynamic polarization test using a potentiostat (Applied Corrosion Monitoring, Cark-in-Cartmel, UK). Solution temperature and chloride ion concentration may affect on passivity of NiTi files. Under the conditions of this in vitro study, the corrosion resistance is slightly increased after clinical use.
Abstract
The aim of the present study is to compare the corrosion tendency using two kinds of NiTi files in the various environmental conditions through the visual examination and electrochemical analysis. ProTaper Universal S2, 21 ㎜ (Dentsply Maillefer, Ballaigues, Switzerland) and Hero 642, 0.06 tapers, size 25, 21 ㎜ (Micromega, Besancon, France) rotary instruments were tested. The instruments were randomly divided into eighteen groups (n = 5) by the immersion temperature, the type of solution, the brand of NiTi rotary instrument and the presence of mechanical loading. Each file was examined at various magnifications using Scanning Electron Microscope (JEOL, Akishima, Tokyo, Japan) equipped with energy dispersive X-ray microanalysis (EDX). EDX was used to determine the components of the endodontic file alloy in corroded and noncorroded areas. The corrosion resistance of unused and used NiTi files after repeated uses in the human teeth was evaluated electrochemically by potentiodynamic polarization test using a potentiostat (Applied Corrosion Monitoring, Cark-in-Cartmel, UK). Solution temperature and chloride ion concentration may affect on passivity of NiTi files. Under the conditions of this in vitro study, the corrosion resistance is slightly increased after clinical use.
참고문헌 (34)
- Schilder H, "Filling root canals in three dimensions", Dent Clin North Am, 11, pp.723~744 (1967)
- Schilder H, "Cleaning and shaping the root canal", Dent Clin North Am, 18, pp.269~296 (1974)
- Haapasalo M, "Eradication of endodontic infection by instrumentation and irrigation solutions", Endodontic Topics, 10, pp.77~102 (2005)
- Zehnder M, "Root canal irrigants", J Endod, 32, pp.389~398 (2006)
- Walia HM, "An initial investigation of the bending and torsional properties of nitinol root canal files", J Endod, 14, pp.346~351 (1988)
- Marti′n B, "Factors influencing the fracture of nickel-titanium rotary instruments", Int Endod J, 36, pp.262~266 (2003)
- Luebke NH, "Bending fatigue study of nickel- titanium Gates Glidden drills", J Endod, 31, pp.523~525 (2005)
- Sotokawa T, "An analysis of clinical breakage of root canal instruments", J Endod, 14, pp.75~82 (1988)
- Kuhn G, "Influence of structure on nickel-titanium endodontic instruments failure", J Endod, 27, pp.516~520 (2001)
- Zinelis S, "Risk Management in Root Canal Treatment, 1st edn. Thessaloniki in : Assessment of fracture mechanism of endodontic files", pp.239~243 (2001), University Studio Press
- Sarkar NK, "The chloride corrosion of four orthodontic wires", J Oral Rehabil, 10, pp.121~128 (1983)
- Oshida Y, "Microanalytical characterization and surface modification of NiTi orthodontic arch wires", Biomed Mater Eng, 2, pp.51~69 (1992)
- International ASM, "ASM handbook, fatigue and fracture" (1996), ASM International
- Firstov GS, "Surface oxidation of NiTi shape memory alloy", Biomaterials, 23, pp.4863~4871 (2002)
- Busslinger A, "Effects of sodium hypochlorite on nickel-titanium lightspeed instruments", Int Endod J, 31, pp.290~294 (1998)
- Haikel Y, "Cutting efficiency of nickel-titanium endodontic instruments and the effect of sodium hypochlorite treatment", J Endod, 24, pp.736~739 (1998)
- Haikel Y, "Mechanical properties of nickel-titanium endodontic instruments and the effect of sodium hypochlorite treatment", J Endod, 24, pp.731~735 (1998)
- Kim H, "Corrosion of stainless steel, nickel- titanium, coated nickel-titanium and titanium orthodontic wires", Angle Orthod, 69, pp.39~44 (1999)
- Stokes OW, "Corrosion in stainless-steel and nickel-titanium files", J Endod, 25, pp.17~20 (1999)
- O’Hoy PYZ, "The effect of cleaning procedures on fracture properties and corrosion of NiTi files", Int Endod J, 36, pp.724~732 (2003)
- Darabara M, "Susceptibility to localized corrosion of stainless steeland NiTi endodontic instruments in irrigating solutions", Int Endod J, 37, pp.705~710 (2004)
- Lee JK, "The effect of surface defects on the cyclic fatigue fracture of HERO shaper Ni-Ti rotary files in a dynamic model: A fractographic analysis", J Kor Acad Cons Dent, 32, pp.130~136 (2007)
- Huang HH, "Effect of chemical composition on the corrosion behavior of Ni-Cr-Mo dental casting alloys", J Biomed Mater Res, 60, pp.458~465 (2002)
- Endo K, "Effects of titanium nitride coatings on surface and corrosion characteristics of Ni-Ti alloy", Dent Mater J, 13, pp.228~239 (1994)
- Montero-Ocampo C, "Effect of compressive straining on corrosion resistance of a shape memory Ni-Ti alloy in Ringer's solution", J Biomed Mater Res, 32, pp.583~591 (1996)
- Wever DJ, "Electrochemical and surface characterization of a nickel-titanium alloy", Biomaterials, 19, pp.761~769 (1998)
- Thierry B, "Effect of surface treatment and sterilization processes on the corrosion behavior of NiTi shape memory alloy", J Biomed Mater Res, 51, pp.685~693 (2000)
- Tre′panier C, "Effect of modification of oxide layer on NiTi stent corrosion resistance", J Biomed Mater Res, 43, pp.433~440 (1998)
- Burstein GT, "The effect of temperature on the nucleation of corrosion pits on titanium in Ringer's physiological solution", Biomaterials, 26, pp.245~256 (2005)
- Sirtes G, "The effects of temperature on sodium hypochlorite shortterm stability, pulp dissolution capacity, and antimicrobial efficacy", J Endod, 31, pp.669~671 (2005)
- Peters OA, "Effect of immersion in sodium hypochlorite on torque and fatigue resistance of nickel-titanium instruments", J Endod, 33, pp.589~593 (2007)
- Rondelli G, "Evaluation by electrochemical tests of the passive film stability of equiatomic Ni-Ti alloy also in presence of stress-induced martensite", J Biomed Mater Res, 51, pp.47~54 (2000)
- Angelini E, "Integrated Biomaterial Science in : Degradation processes on metallic surfaces", pp.308~323 (2002), Academic - Plenum Publishers
- Iijima M, "Galvanic corrosion behavior of orthodontic archwire alloys coupled to bracket alloys", Angle Orthod, 76, pp.705~711 (2006)