Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Evaluation of marginal and internal fit of metal copings fabricated by selective laser melting

SLM 방식으로 제작한 도재관 금속하부구조물의 변연 및 내면 적합도 평가

  • Sung-Ryung Bae (Department of Dental Laboratory Science and Engineering, Graduate School, Korea University) ;
  • Ha-Bin Lee (Department of Dental Laboratory Science and Engineering, Graduate School, Korea University) ;
  • Mi-Jun Noh (Department of Dental Laboratory Science and Engineering, Graduate School, Korea University) ;
  • Ji-Hwan Kim (Department of Dental Laboratory Science and Engineering, Graduate School, Korea University)
  • 배성령 (고려대학교 대학원 보건과학과 치의기공학전공) ;
  • 이하빈 (고려대학교 대학원 보건과학과 치의기공학전공) ;
  • 노미준 (고려대학교 대학원 보건과학과 치의기공학전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공학전공)
  • Received : 2023.02.10
  • Accepted : 2023.03.21
  • Published : 2023.03.30
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Abstract

Purpose: To evaluate the marginal and internal fit of metal coping fabricated by a metal three-dimensional (3D) printer that uses selective laser melting (SLM). Methods: An extraoral scanner was used to scan a die of the prepared maxillary right first molar, and the coping was designed using computer-aided design software and saved as an stereo lithography (STL) file. Ten specimens were printed with an SLM-type metal 3D printer (SLM group), and 10 more specimens were fabricated by casting the castable patterns output generated by a digital light processing-type resin 3D printer (casting the 3D printed resin patterns [CRP] group). The fit was measured using the silicon replica technique, and 8 points (A to H) were set per specimen to measure the marginal (points A, H) and internal (points B~G) gaps. The differences among the groups were compared using the Mann-Whitney U-test (α=0.05). Results: The mean of marginal fit in the SLM group was 69.67±18.04 ㎛, while in the CRP group was 117.10±41.95 ㎛. The internal fit of the SLM group was 95.18±41.20 ㎛, and that of the CRP group was 86.35±32 ㎛. As a result of statistical analysis, there was a significant difference in marginal fit between the SLM and CRP groups (p<0.05); however, there was no significant difference in internal fit between the SLM group and the CRP group (p>0.05). Conclusion: The marginal and internal fit of SLM is within the clinically acceptable range, and it seems to be applicable in terms of fit.

Keywords

References

  1. Turdean GL, Craciun A, Popa D, Constantiniuc M. Study of electrochemical corrosion of biocompatible Co-Cr and Ni-Cr dental alloys in artificial saliva. Influence of pH of the solution. Mater Chem Phys. 2019; 233:390-398. https://doi.org/10.1016/j.matchemphys.2019.05.041
  2. Qiu J, Yu W, Zhang F. Effects of the porcelain-fused-to-metal firing process on the surface and corrosion of two Co-Cr dental alloys. J Mater Sci. 2011;46:1359-1368. https://doi.org/10.1007/s10853-010-4927-0
  3. Hung SH, Hung KS, Eick JD, Chappell RP. Marginal fit of porcelain-fused-to-metal and two types of ceramic crown. J Prosthet Dent. 1990;63:26-31. https://doi.org/10.1016/0022-3913(90)90260-J
  4. Leinfelder KF. Porcelain esthetics for the 21st century. J Am Dent Assoc. 2000;131 Suppl:47S-51S. https://doi.org/10.14219/jada.archive.2000.0402
  5. Almilhatti HJ, Giampaolo ET, Vergani CE, Machado AL, Pavarina AC. Shear bond strength of aesthetic materials bonded to Ni-Cr alloy. J Dent. 2003;31:205-211. https://doi.org/10.1016/S0300-5712(03)00012-5
  6. Johnson T, van Noort R, Stokes CW. Surface analysis of porcelain fused to metal systems. Dent Mater. 2006;22:330-337. https://doi.org/10.1016/j.dental.2005.05.003
  7. Yim JH, Shin SY. Cr-Co removable partial denture treatment fabricated by selective laser melting: a case report. J Dent Rehabil Appl Sci. 2021;37:39-47. https://doi.org/10.14368/jdras.2021.37.1.39
  8. Kim DY, Jeon JH, Park JY, Kim JH, Kim HY, Kim WC. Comparison of the marginal and internal gap of metal coping according to processing method of dental CAD/CAM system. J Dent Hyg Sci. 2015;15:12-17. https://doi.org/10.17135/jdhs.2015.15.1.12
  9. Khaledi AA, Farzin M, Akhlaghian M, Pardis S, Mir N. Evaluation of the marginal fit of metal copings fabricated by using 3 different CAD-CAM techniques: milling, stereolithography, and 3D wax printer. J Prosthet Dent. 2020;124:81-86. https://doi.org/10.1016/j.prosdent.2019.09.002
  10. Kim DY, Sin CH, Jung ID, Kim JH, Kim WC. Evaluation of Marginal and Internal Gap of Cobalt-Chromium Sintering Metal Coping Fabricated by Dental CAD/CAM System. J Dent Hyg Sci. 2015;15:536-541. https://doi.org/10.17135/jdhs.2015.15.5.536
  11. Thakare A, Ramesh S, Patil V, Meenakshi S, Ramu R, Byakodi R. WITHDRAWN: comparative evaluation of internal and marginal fit of interim crowns fabricated by CAD/CAM milling and two different 3D printing systems - an in vitro study. Mater Today Proc. 2022;57(Pt 2):A1-A9. https://doi.org/10.1016/j.matpr.2022.04.191
  12. Frazier WE. Metal additive manufacturing: a review. J Mater Eng Perform. 2014;23:1917-1928. https://doi.org/10.1007/s11665-014-0958-z
  13. Kim HD. Application of 3D printer in dental clinic. J Korean Acad Esthet Dent. 2018;27:82-96. https://doi.org/10.5933/JKAPD.2018.45.1.82
  14. Takaichi A, Suyalatu, Nakamoto T, Joko N, Nomura N, Tsutsumi Y, et al. Microstructures and mechanical properties of Co-29Cr-6Mo alloy fabricated by selective laser melting process for dental applications. J Mech Behav Biomed Mater. 2013;21:67-76. https://doi.org/10.1016/j.jmbbm.2013.01.021
  15. Won S, Kang HG, Ko KH, Huh YH, Park CJ, Cho LR. Review on additive manufacturing of dental materials. J Dent Rehabil Appl Sci. 2021;37:1-15. https://doi.org/10.14368/jdras.2021.37.1.1
  16. Rutkunas V, Gedrimiene A, Auskalnis L, Admakin O, Mangano F. Accuracy of fixed implant-supported dental prostheses additively manufactured by metal, ceramic, or polymer: a systematic review. J Prosthodont. 2022;31(S1):70-87. https://doi.org/10.1111/jopr.13449
  17. Ucar Y, Akova T, Akyil MS, Brantley WA. Internal fit evaluation of crowns prepared using a new dental crown fabrication technique: laser-sintered Co-Cr crowns. J Prosthet Dent. 2009;102:253-259. https://doi.org/10.1016/S0022-3913(09)60165-7
  18. Kim J, Park JM, Kim M, Heo SJ, Shin IH, Kim M. Comparison of experience curves between two 3-dimensional intraoral scanners. J Prosthet Dent. 2016;116:221-230. https://doi.org/10.1016/j.prosdent.2015.12.018
  19. Jeong SJ, Cho HW, Jung JH, Kim JM, Kim YL. Comparative evaluation of marginal and internal fit of metal copings fabricated by various CAD/CAM methods. J Korean Acad Prosthodont. 2019;57:211-218. https://doi.org/10.4047/jkap.2019.57.3.211
  20. Yan X, Xu YX, Wu Y, Lin H. Effects of heat treatment on metal-ceramic combination of selective-laser-melted cobalt-chromium alloy. J Prosthet Dent. 2018;120:319.e1-319.e6. https://doi.org/10.1016/j.prosdent.2018.05.012
  21. Hong MH, Min BK, Lee DH, Kwon TY. Marginal fit of metal-ceramic crowns fabricated by using a casting and two selective laser melting processes before and after ceramic firing. J Prosthet Dent. 2019;122:475-481. https://doi.org/10.1016/j.prosdent.2019.03.002
  22. Kim JH. Evaluation of marginal and internal gap of metal substructures fabricated by the state-of-the-art manufacturing technologies. Korean J Dent Mater. 2020;47:1-10. https://doi.org/10.14815/kjdm.2020.47.1.1
  23. Huang Z, Zhang L, Zhu J, Zhang X. Clinical marginal and internal fit of metal ceramic crowns fabricated with a selective laser melting technology. J Prosthet Dent. 2015;113:623-627. https://doi.org/10.1016/j.prosdent.2014.10.012
  24. Wu M, Dong X, Qu Y, Yan J, Li N. Analysis of microstructure and fatigue of cast versus selective laser-melted dental Co-Cr alloy. J Prosthet Dent. 2022;128:218.e1-218.e7. https://doi.org/10.1016/j.prosdent.2022.05.011
  25. Liu W, Qing H, Pei X, Wang J. Internal adaptation of cobalt-chromium posts fabricated by selective laser melting technology. J Prosthet Dent. 2019;121:455-460. https://doi.org/10.1016/j.prosdent.2018.03.017
  26. Pyo SW, Lee JJ, Han JS, Lim YJ. Study on methodology for the assessment of internal and marginal adaptation on fixed dental prosthesis. J Dent Rehabil Appl Sci. 2016;32:158-168. https://doi.org/10.14368/jdras.2016.32.3.158
  27. Quante K, Ludwig K, Kern M. Marginal and internal fit of metal-ceramic crowns fabricated with a new laser melting technology. Dent Mater. 2008;24:1311-1315. https://doi.org/10.1016/j.dental.2008.02.011
  28. McLean JW, von Fraunhofer JA. The estimation of cement film thickness by an in vivo technique. Br Dent J. 1971;131:107-111. https://doi.org/10.1038/sj.bdj.4802708
  29. Jorgensen KD, Esbensen AL. The relationship between the film thickness of zinc phosphate cement and the retention of veneer crowns. Acta Odontol Scand. 1968;26:169-175. https://doi.org/10.3109/00016356809026130
  30. Daou EE, Baba NZ. The effect of firing cycles on the fit of cobalt-chromium multiunit prostheses fabricated by additive manufacturing. J Prosthodont. 2023;32:71-76. https://doi.org/10.1111/jopr.13506
  31. Zhang M, Gan N, Qian H, Jiao T. Retentive force and fitness accuracy of cobalt-chrome alloy clasps for removable partial denture fabricated with SLM technique. J Prosthodont Res. 2022;66:459-465. https://doi.org/10.2186/jpr.JPR_D_21_00017
  32. Lapcevic AR, Jevremovic DP, Puskar TM, Williams RJ, Eggbeer D. Comparative analysis of structure and hardness of cast and direct metal laser sintering produced Co-Cr alloys used for dental devices. Rapid Prototyp J. 2016;22:144-151. https://doi.org/10.1108/RPJ-04-2014-0051
  33. Zhou Y, Li N, Yan J, Zeng Q. Comparative analysis of the microstructures and mechanical properties of Co-Cr dental alloys fabricated by different methods. J Prosthet Dent. 2018;120:617-623. https://doi.org/10.1016/j.prosdent.2017.11.015
  34. Kruth JP, Levy G, Klocke F, Childs THC. Consolidation phenomena in laser and powder-bed based layered manufacturing. CIRP Ann. 2007;56:730-759. https://doi.org/10.1016/j.cirp.2007.10.004
  35. Xu D, Xiang N, Wei B. The marginal fit of selective laser melting-fabricated metal crowns: an in vitro study. J Prosthet Dent. 2014;112:1437-1440. https://doi.org/10.1016/j.prosdent.2014.05.018
  36. Kakinuma H, Izumita K, Yoda N, Egusa H, Sasaki K. Comparison of the accuracy of resin-composite crowns fabricated by three-dimensional printing and milling methods. Dent Mater J. 2022;41:808-815. https://doi.org/10.4012/dmj.2022-074