In vitro evaluation of a removable partial denture framework using multi-directionally forged titanium
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
PURPOSE. This study evaluated the availability of multi-directionally forged (MDF) titanium (Ti) as a component of removable partial dentures (RPDs). MDF-Ti remarkably improved the mechanical properties of RPDs due to its ultrafine-grained structure. MATERIALS AND METHODS. The wear resistance, plaque adhesion, and machinability of MDF-Ti were tested. As controls, commercially pure (CP) titanium was used for wear, plaque adhesion, and machinability tests. For wear resistance, the volume losses of the titanium teeth before and after wear tests were evaluated. Plaque adhesion was evaluated by the assay of Streptococcus mutans. In the machinability test, samples were cut and ground by a steel fissure bur and carborundum (SiC) point. An unpaired t-test was employed for the analysis of the significant differences between MDF-Ti and the control in the results for each test. RESULTS. Wear resistance and plaque adherence of MDF-Ti similar to those of CP-Ti (P>.05) were indicated. MDF-Ti exhibited significantly larger volume loss than CP-Ti in all conditions except 100/30,000 g/rpm in machinability tests (P<.05). CONCLUSION. Although the wear resistance and plaque adherence of MDFTi were comparable to those of controls, MDF-Ti showed better machinability than did CP-Ti. MDF-Ti could be used as a framework material for RPDs.
Abstract
PURPOSE. This study evaluated the availability of multi-directionally forged (MDF) titanium (Ti) as a component of removable partial dentures (RPDs). MDF-Ti remarkably improved the mechanical properties of RPDs due to its ultrafine-grained structure. MATERIALS AND METHODS. The wear resistance, plaque adhesion, and machinability of MDF-Ti were tested. As controls, commercially pure (CP) titanium was used for wear, plaque adhesion, and machinability tests. For wear resistance, the volume losses of the titanium teeth before and after wear tests were evaluated. Plaque adhesion was evaluated by the assay of Streptococcus mutans. In the machinability test, samples were cut and ground by a steel fissure bur and carborundum (SiC) point. An unpaired t-test was employed for the analysis of the significant differences between MDF-Ti and the control in the results for each test. RESULTS. Wear resistance and plaque adherence of MDF-Ti similar to those of CP-Ti (P>.05) were indicated. MDF-Ti exhibited significantly larger volume loss than CP-Ti in all conditions except 100/30,000 g/rpm in machinability tests (P<.05). CONCLUSION. Although the wear resistance and plaque adherence of MDFTi were comparable to those of controls, MDF-Ti showed better machinability than did CP-Ti. MDF-Ti could be used as a framework material for RPDs.
참고문헌 (35)
- Ohkubo C, "Present status of titanium removable dentures-a review of the literature", J Oral Rehabil, 35, pp.706~714 (2008)
- Takayama Y, "Survey on use of titanium dentures in Tsurumi University Dental Hospital for 11 years", J Prosthodont Res, 53, pp.53~59 (2009)
- Ohkubo C, "Titanium removable denture based on a one-metal rehabilitation concept", Dent Mater J, 36, pp.517~523 (2017)
- Prystowsky SD, "Allergic contact hypersensitivity to nickel, neomycin, ethylenediamine, and benzocaine. Relationships between age, sex, history of exposure, and reactivity to standard patch tests and use tests in a general population", Arch Dermatol, 115, pp.959~962 (1979)
- Covington JS, "Quantization of nickel and beryllium leakage from base metal casting alloys", J Prosthet Dent, 54, pp.127~136 (1985)
- Morris HF, "Veterans administration cooperative studies project no. 147. Part IV: Biocompatibility of base metal alloys", J Prosthet Dent, 58, pp.1~5 (1987)
- Sakai T, "The effects of particulate metals on cell viability of osteoblast-like cells in vitro", Dent Mater J, 21, pp.133~146 (2002)
- Kuroda S, "Effects of six particulate metals on osteoblast-like MG-63 and HOS cells in vitro", Dent Mater J, 22, pp.507~520 (2003)
- Long M, "Titanium alloys in total joint replacement-a materials science perspective", Biomaterials, 19, pp.1621~1639 (1998)
- Niinomi M, "Mechanical biocompatibilities of titanium alloys for biomedical applications", J Mech Behav Biomed Mater, 1, pp.30~42 (2008)
- Santos PF, "Microstructures, mechanical properties and cytotoxicity of low cost beta Ti-Mn alloys for biomedical applications", Acta Biomater, 26, pp.366~376 (2015)
- Stenlund P, "Bone response to a novel Ti-Ta-Nb-Zr alloy", Acta Biomater, 20, pp.165~175 (2015)
- Hall EO, "The deformation and ageing of mild steel : II characteristics of the Lüders deformation", Proc Phys Soc, 64, pp.742~747 (1951)
- Petch NJ, "The cleavage strength of polycrystals", J Iron Steel Inst, 174, pp.25~28 (1953)
- Pande CS, "Nanomechanics of Hall-Petch relationship in nanocrystalline materials", Prog Mater Sci, 54, pp.689~706 (2009)
- Tsuji N, "Strength and ductility of ultrafine grained aluminum and iron produced by ARB and annealing", Scripta Mater, 47, pp.893~899 (2002)
- Valiev RZ, "Grain refinement and mechanical behavior of the Al alloy, subjected to the new SPD technique", Mater Trans, 50, pp.87~91 (2009)
- Furukawa M, "Microstructural characteristics of an ultrafine grain metal processed with equal-channel angular pressing", Mater Charact, 37, pp.277~283 (1996)
- Miura, H., "Multi-directional forging of AZ61Mg alloy under decreasing temperature conditions and improvement of its mechanical properties", Mater Sci Eng A, 528, pp.6981~6992 (2011)
- Miura H, "Development of ultrafine grained and high strength MDF pure titanium, Expected applications as biocompatible implants", Titanium Jpn, 62, pp.31~33 (2014)
- Hoshi N, "A new phase in the development of high strength pure titanium by multi-directional forging", J Dent Mater, 32, pp.403~ (2013)
- Arai Y, "Development of optimal new titanium for dental implant material", J Jpn Soc Oral Implant, 30, pp.152~ (2017)
- Suzuki G, "Electrochemical property and corrosion behavior of multi-directionally forged titanium in fluoride solution", Dent Mater J, 38, pp.845~853 (2019)
- Suzuki G, "Effect of surface treatment of multi-directionally forged(MDF)titanium implant on bone response", Metals, 9, pp.230~ (2019)
- Ohkubo C, "In vitro wear assessment of titanium alloy teeth", J Prosthodont, 11, pp.263~269 (2002)
- Ohkubo C, "Wear resistance of experimental Ti-Cu alloys", Biomaterials, 24, pp.3377~3381 (2003)
- Ohkubo C, "Wear resistance of magnetic Fe-Pt alloy teeth", Prosthodont Res Pract, 4, pp.42~47 (2005)
- Kabe S, "Studies on attrition of CP titanium as metal teeth", Tsurumi Univ Dent J, 24, pp.69~79 (1998)
- Shimura I, "In vitro study evaluated the relative wear resistance of CP titanium and artificial teeth materials", Tsurumi Univ Dent J, 27, pp.45~58 (2001)
- Urushibara Y, "An analysis of the biofilms adhered to framework alloys using in vitro denture plaque models", Dent Mater J, 33, pp.402~414 (2014)
- Quirynen M, "The influence of titanium abutment surface roughness on plaque accumulation and gingivitis : short-term observations", Int J Oral Maxillofac Implants, 11, pp.169~178 (1996)
- Ohkubo C, "The machinability of cast titanium and Ti-6Al-4V", Biomaterials, 21, pp.421~428 (2000)
- Watanabe I, "Cutting efficiency of air-turbine burs on cast titanium and dental casting alloys", Dent Mater, 16, pp.420~425 (2000)
- Watanabe I, "Machinability of cast commercial titanium alloys", J Biomed Mater Res, 63, pp.760~764 (2002)
- Ohkubo C, "Effect of surface reaction layer on grindability of cast titanium alloys", Dent Mater, 22, pp.268~274 (2006)