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Kodaira A, Koizumi H, Hiraba H, Takeuchi Y, Koike M, Shimoe S. Bonding of resin luting materials to titanium and titanium alloy. J Oral Sci 2022; 64:181-184. [PMID: 35584941 DOI: 10.2334/josnusd.22-0036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Recently in Japan, due to the increased prices of palladium and gold, cast titanium restorations have been included in the Japanese national health insurance system. The purpose of this review was to survey the available literature on titanium bonding systems, focusing on the adhesive monomer in the luting agent in order to expand the application of resin-bonded fixed prostheses made of titanium or titanium alloys. It was found that adhesive monomers are effective for bonding to titanium, and provide results equal to the procedures of silanization and tribochemical silica coating. A primer or a luting agent, including 10-methacryloyloxydecyl dihydrogen phosphate (MDP), methacryloyloxyalkyl thiophosphate derivative (MEPS), 6-methacryloxyhexyl phosphonoacetate (6-MHPA), and 4-methacryloyloxyethl trimellitate anhydride (4-META) promotes bonding characteristics between titanium and the resin material.
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Affiliation(s)
- Akihisa Kodaira
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Hiroyasu Koizumi
- Department of Dental Materials, Nihon University School of Dentistry.,Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry
| | - Haruto Hiraba
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Yoshimasa Takeuchi
- Department of Comprehensive Dentistry and Clinical Education, Nihon University School of Dentistry.,Division of Dental Education, Dental Research Center, Nihon University School of Dentistry
| | - Mari Koike
- The Nippon Dental University College at Tokyo, The Nippon Dental University
| | - Saiji Shimoe
- Department of Anatomy and Functional Restorations, Integrated Health Sciences, Hiroshima University Graduate School of Biomedical and Health Sciences
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Takehana K, Koizumi H, Hiraba H, Kodaira A, Yoneyama T, Matsumura H. Bonding performance of a thiohydantoin-methacrylate monomer on noble metal alloys. Dent Mater J 2021; 41:279-285. [PMID: 34980767 DOI: 10.4012/dmj.2021-181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study assessed the effect of a primer containing 10-methacryloyloxydecyl-(2-thiohydantoin-4-yl)propionate (MDTHP) on the bonding of noble metal alloys to an acrylic resin. Three noble metal alloys were selected as adherends, and V-Primer containing 6-(4-vinylbenzyl-n-propyl)amino-1,3,5-triazine-2,4-dithione was used as a comparative control. The disk specimens of each noble metal alloy were wet-ground and divided into three conditions: specimens primed with MDTHP primer or V-Primer, and specimens without priming. An acrylic resin was bonded to each specimen, and the specimens were performed the shear bond test. The MDTHP primer showed higher shear bond strength than the V-Primer for all specimens. X-ray photoelectron spectroscopic analysis showed that MDTHP was adsorbed on the Au-Pt-Pd alloy surface even after acetone cleaning. MDTHP binds not only with Cu but also with Au and Ag, promoting the bond strength of noble metal alloys. The effectiveness of MDTHP on dental noble metal alloys was suggested.
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Affiliation(s)
- Kosuke Takehana
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry
| | - Hiroyasu Koizumi
- Department of Dental Materials, Nihon University School of Dentistry.,Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry
| | - Haruto Hiraba
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Akihisa Kodaira
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Takayuki Yoneyama
- Department of Dental Materials, Nihon University School of Dentistry.,Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry
| | - Hideo Matsumura
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
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Furuchi M, Shimada M, Hiraba H, Kodaira A, Hashiguchi A, Kamimoto A. Influence of polymerization methods and priming agents on the bond strength between resin luting agents and gold alloy. J Oral Sci 2021; 63:275-279. [PMID: 34148925 DOI: 10.2334/josnusd.21-0224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE To evaluate the influence of polymerization methods and a metal priming agent on the bond strength between gold alloy for metal ceramic restorations and dual-cure-type resin luting agents, and on the strength and hardness of the luting agents. METHODS A total of 154 disks cast by a gold alloy were treated with or without a metal priming agent. One of the three luting agents was applied on the disk. The luting agent was either chemically or dual-polymerized. The shear bond strength was measured both before and after thermocycling. In addition, scanning electron microscope (SEM) observation, flexural strength test, and Knoop hardness test were performed. RESULTS Significant differences among the luting agents were observed in terms of bond strength and flexural strength. Significant differences between chemically and dual-polymerized luting agents were observed regarding shear bond strength, flexural strength, and Knoop hardness before thermocycling. The application of the priming agent was effective only for a luting agent. CONCLUSION Both bond strength and flexural strength differed among three luting agents. The effect of the priming agent on bond strength differed among the luting agents. Both the bond and flexural strength of a chemically polymerized luting agent differed before or after thermocycling.
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Affiliation(s)
- Mika Furuchi
- Department of Comprehensive Dentistry and Clinical Education, Nihon University School of Dentistry.,Division of Dental Education, Dental Research Center, Nihon University School of Dentistry
| | | | - Haruto Hiraba
- Department of Fixed Prosthodontics, Nihon University School of Dentistry
| | - Akihisa Kodaira
- Department of Fixed Prosthodontics, Nihon University School of Dentistry
| | | | - Atsushi Kamimoto
- Department of Comprehensive Dentistry and Clinical Education, Nihon University School of Dentistry.,Division of Dental Education, Dental Research Center, Nihon University School of Dentistry
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Effects of Copper Surface Oxidation and Reduction on Shear-Bond Strength Using Functional Monomers. MATERIALS 2021; 14:ma14071753. [PMID: 33918316 PMCID: PMC8038149 DOI: 10.3390/ma14071753] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/29/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022]
Abstract
This study was conducted to clarify the influence of the copper surface oxidation and reduction on the shear-bond strength with functional monomers. Unheated copper specimens (UH; n = 88) were wet-ground. Three-quarters of the UH were then heated (HT). Two-thirds of the HT was then immersed in a hydrochloric acid solution (AC). Half of the AC was then reheated (RH). Each group was further divided into two groups (n = 11), which were primed by either 6-methacryloyloxyhexyl 2-thiouracil-5-carboxylate (MTU-6) or 10-methacryloyloxydecyl dihydrogen phosphate (MDP). The shear-bond strength tests were used for bonding with an acrylic resin. The surface roughness values and chemical states of the four groups were analyzed using a confocal scanning laser microscope and X-ray photoelectron spectroscopy (XPS). The shear-bond strengths of HT and RH were the lowest in the MTU-6-primed groups. The result of AC was significantly lower than others in the MDP-primed groups. The XPS results showed that the surfaces of UH and AC consisted of Cu2O and Cu. The surface changed to CuO upon heating. The presence or absence of copper-oxide films showed the opposite trends in the effectiveness of MTU-6 and MDP to improve bond strength. The results could elucidate the effects of functional monomers on copper-oxide films.
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Kodaira A, Koizumi H, Hiraba H, Takehana K, Yoneyama T, Matsumura H. Adhesive bonding of noble metals with a thiohydantoin primer. Dent Mater 2020; 37:e176-e181. [PMID: 33341246 DOI: 10.1016/j.dental.2020.11.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/31/2020] [Accepted: 11/21/2020] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The purpose of this study was to assess the effects of an experimental primer containing acetone solution and a sulfur-containing functional monomer, 10-methacryloyloxydecyl-(2-thiohydantoin-4-yl)propionate (MDTHP), on the bonds between noble metals and acrylic resin. METHODS The experimental primer used as the control for comparison consisted of 6-(4-vinylbenzyl-n-propyl)amino-1,3,5-triazine-2,4-dithione (VBATDT) in acetone. These primers were prepared as equimolar functional monomers (0.1 mol%). A self-polymerizing acrylic resin initiated with tri-n-butylborane (TBB) was used as the luting agent. Four elemental metal disks (silver, copper, palladium, and gold) were used as adherend specimens. All the disks were wet-ground with silicon carbide paper (#1500). Bonding reactions were performed on 12 combinations of the four metals, and the disks were either primed with MDTHP or VBATDT or were unprimed (control). Shear bond strengths were determined pre- and post-thermocycling (5-55 °C, dwell time 60 s, 20,000 cycles). The results were statistically analyzed via a non-parametric test (α = 0.05). RESULTS The post-thermocycling shear bond strengths of the MDTHP primer were as follows (median, n = 11): 13.2 MPa on silver, 25.9 MPa on copper, 4.1 MPa on palladium, and 11.3 MPa on gold. The MDTHP primer showed higher post-thermocycling shear bond strength on all the four metals. Additionally, on silver and copper, the MDTHP bond strengths were higher than on the other metals. SIGNIFICANCE Within the limitation of current of experimental setting, the MDTHP compound may be applicable as a functional monomer for bonding noble metal alloys.
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Affiliation(s)
- Akihisa Kodaira
- Department of Fixed Prosthodontics, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan.
| | - Hiroyasu Koizumi
- Department of Dental Materials, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan
| | - Haruto Hiraba
- Department of Fixed Prosthodontics, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan
| | - Kousuke Takehana
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan
| | - Takayuki Yoneyama
- Department of Dental Materials, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan
| | - Hideo Matsumura
- Department of Fixed Prosthodontics, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, 1-8-13, Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan
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Matsumura H, Kojima K, Mio S, Yamamoto T, Kodaira A, Koizumi H. Synthesis and characterization of a methacrylate monomer with a thiohydantoin structure. J Oral Sci 2020; 62:256-258. [PMID: 32418928 DOI: 10.2334/josnusd.19-0005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The purpose of the current study was to synthesize a methacrylate monomer with a thiohydantoin structure. In a flask, (2-thiohydantoin-4-yl) propionic acid, 10-hyroxydecyl methacrylate, 4-dimethylaminopyridine, and tetrahydrofuran (THF) were placed in a nitrogen atmosphere. A THF solution of N,N'-dicyclohexylcarbodiimide was added and stirred at room temperature. Ethyl acetate and n-hexane were then added to the reaction mixture. The reacted slurry was purified by chromatography with silica gel and hexane-ethyl acetate gradient elution solvent. The structure of the compound was assigned with proton nuclear magnetic resonance spectrum analysis, infrared spectroscopy, and high-resolution mass spectral analysis. The colorless viscous liquid obtained in yield of 49% was characterized as 10-methacryloyloxydecyl-(2-thiohydantoin-4-yl)propionate (MDTHP) or 10-((3-(5-oxo-2-thioxysoimidazolidin-4-yl)propanoyl)oxy)decyl methacrylate (2-THPDM). The MDTHP was soluble to acetone, isopropanol, and methyl methacrylate up to 2.6% or more. This compound could be potentially applicable as a functional monomer for bonding metals and alloys.
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Affiliation(s)
- Hideo Matsumura
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | | | | | | | - Akihisa Kodaira
- Department of Fixed Prosthodontics, Nihon University School of Dentistry.,Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry
| | - Hiroyasu Koizumi
- Department of Dental Materials, Nihon University School of Dentistry.,Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry
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Influence of Oxidation of Copper on Shear Bond Strength to an Acrylic Resin Using an Organic Sulfur Compound. MATERIALS 2020; 13:ma13092092. [PMID: 32370001 PMCID: PMC7254407 DOI: 10.3390/ma13092092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/23/2020] [Accepted: 04/26/2020] [Indexed: 11/17/2022]
Abstract
The aim of this study was to clarify the influence of the copper surfaces changed from Cu or Cu2O to CuO on the bonding strength of resin with organic sulfur compounds. The disk-shaped specimens (n = 44) of copper were wet-ground. Half of the specimens were heated at 400 °C for 4 min in an electric furnace (HT: heated). Half of the specimens were not heated (UH: unheated). The specimens were further divided into two groups. Each group was primed by 6-methacryloyloxyhexyl 2-thiouracil-5-carboxylate (MTU-6) or unprimed (n = 11). A statistical analysis of the results of shear bond strength testing was performed, and the failure mode of the bonded areas was classified with an optical microscope. Two types of specimen surface (UH or HT) were analyzed chemically using X-ray photoelectron spectroscopy (XPS). When primed with MTU-6, unheated Cu (28.3 MPa) showed greater bond strength than heated (19.1 MPa). When unprimed, heated Cu (4.1 MPa) showed greater bond strength than unheated (2.3 MPa). The results of the debonded surfaces observation showed that only the UH-MTU-6 group demonstrated a combination of adhesive and cohesive failures in all specimens. The XPS results showed that the surface of copper changed from Cu or Cu2O to CuO when HT. These results confirmed that it is necessary to take care of the copper oxide contained in noble metal alloys when using organic sulfur compounds for adhesion.
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Miyahara H, Ikeda H, Anggraini SA, Fujio Y, Yoshii S, Nagamatsu Y, Kitamura C, Shimizu H. Adhesive bonding of alumina air-abraded Ag-Pd-Cu-Au alloy with 10-methacryloyloxydecyl dihydrogen phosphate. Dent Mater J 2019; 39:262-271. [PMID: 31723095 DOI: 10.4012/dmj.2019-027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this paper is to study changes in the Ag-Pd-Cu-Au alloy surfaces by alumina air-abrasion process and effect of those changes on the adhesive bonding characteristic. Surface roughness, surface composition and chemical state of the alumina air-abraded alloys were analyzed by a confocal laser scanning microscope, an energy dispersive X-ray spectroscopy and an X-ray photoelectron spectroscopy. The results showed that the alumina air-abrasion changed the alloy surface by mechanical roughening, alumina remain and copper oxidation. Effect of the changes in the alloy surface on the adhesive bonding characteristic was examined by using a methyl methacrylate/tri-n-butylborane derivative (MMA/TBB) resin cement with the 10-methacryloyloxydecyl dihydrogen phosphate (MDP) contained primer. The shear bond strength test results indicated that the surface oxidation by the abrasion is the main contributor that improved the adhesive bonding rather than other effects such as mechanical roughening or alumina remain.
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Affiliation(s)
- Hirotake Miyahara
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University
| | - Hiroshi Ikeda
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
| | - Sri Ayu Anggraini
- Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST)
| | - Yuki Fujio
- Advanced Manufacturing Research Institute (AMRI), National Institute of Advanced Industrial Science and Technology (AIST)
| | - Shinji Yoshii
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University
| | - Yuki Nagamatsu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
| | - Chiaki Kitamura
- Division of Endodontics and Restorative Dentistry, Department of Oral Functions, Kyushu Dental University
| | - Hiroshi Shimizu
- Division of Biomaterials, Department of Oral Functions, Kyushu Dental University
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Hiraba H, Nogawa H, Koizumi H, Kodaira A, Akahane S. Effect of multi-purpose primers on the bond durability between tri-n-butylborane initiated resin and gold alloy. J Prosthodont Res 2018; 63:95-99. [PMID: 30385330 DOI: 10.1016/j.jpor.2018.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/24/2018] [Accepted: 09/28/2018] [Indexed: 11/25/2022]
Abstract
PURPOSE This study investigated the influence of an interaction between sulfur-containing monomers and other monomers in multipurpose primers on the bond durability of a tri-n-butylborane (TBB)-initiated acrylic resin to a gold alloy. METHODS The disk-shaped adherend materials were prepared from a gold alloy (Casting Gold M.C. Type IV). Two multipurpose-primers (Universal Primer, Monobond Plus), four metal primers containing an organic sulfur compound (M.L. Primer, Alloy Primer, Metaltite, and V-Primer), and three acidic primers (Estenia Opaque Primer, Acryl Bond, and Super-Bond Liquid) were used. The shear bond strengths were determined pre- and post-thermocycling to evaluate the bond durability. A statistical analysis of the results was performed using a non-parametric procedure, and the cohesive failure ratios of the debonded surfaces were compared. RESULTS Among the pre-thermocycling groups, M.L. Primer, Metaltite, Monobond Plus, Universal Primer, and Alloy Primer showed the greatest bond strengths. Among the post-thermocycling groups, M.L. Primer, Metaltite, Monobond Plus, and Universal Primer showed the greatest bond strengths, whereas Acryl Bond, Super-Bond Liquid, Estenia Opaque Primer, and the unprimed control showed the lowest. Similarly, the primers that did not contain either a sulfur compound showed an obvious reduction in the cohesive failure ratio. CONCLUSIONS Multi-purpose primers containing a sulfur-containing monomer increased the bond strength of a TBB-initiated acrylic resin to a gold alloy. The proportion of the area of cohesive failure to the bonded area showed an interrelationship with the shear bond strength testing results.
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Affiliation(s)
- Haruto Hiraba
- Department of Fixed Prosthodontics, Nihon University School of Dentistry, Tokyo 101-8310, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Hiroshi Nogawa
- Department of Fixed Prosthodontics, Nihon University School of Dentistry, Tokyo 101-8310, Japan; Division of Advanced Dental Treatment, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan.
| | - Hiroyasu Koizumi
- Department of Dental Materials, Nihon University School of Dentistry, Tokyo, Japan; Division of Biomaterials Science, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan
| | - Akihisa Kodaira
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
| | - Shunsuke Akahane
- Division of Applied Oral Sciences, Nihon University Graduate School of Dentistry, Tokyo, Japan
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