Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Three-dimensional evaluation of the internal adaptation of single and three-unit fixed dental restoration by CAD/CAM milling system

CAD/CAM 밀링 시스템을 활용한 단일 치관과 3본 교의치의 3D 적합도 평가

  • Kim, So-Ri (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University) ;
  • Kim, Chong-Myeong (Institute for Health Science, College of Public Health Science, Korea University) ;
  • Kim, Woong-Chul (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University) ;
  • Kim, Ji-Hwan (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University)
  • 김소리 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김총명 (고려대학교 보건과학연구소) ;
  • 김웅철 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공전공)
  • Received : 2016.10.31
  • Accepted : 2017.03.13
  • Published : 2017.03.30
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Abstract

Purpose: The purpose of this paper was to evaluate the occurrence of errors regarding adaptation by conducting a three-dimensional assessment comparing the bridge type dental restoration after the cutting process, which has multiple abutments, with a single type dental restoration. Methods: By using ten identical files obtained by scanning the master model, thirty designs were created consisting of ten maxillary right first premolars and ten maxillary right first molars with single crown abutments, along with ten bridge designs with the identical abutment. A 5-axis milling machine was used to produce the design file. The produced denture prostheses were scanned using a silicone replica for a STL file. An evaluation was conducted using 3D analysis software on the master model and each of the thirty data files. Results: The RMS value of the pre-molar (14) was $38.4{\pm}4{\mu}m$ for single and $54.7{\pm}6{\mu}m$ for bridge abutment; therefore, a statistically significant difference was observed for single and bridge designs although both shared the same abutment form (P<.05). Also, the RMS value of the molar (16) was $47.6{\pm}2{\mu}m$ and $56.6{\pm}5{\mu}m$ for the single and bridge designs, respectively, thereby presenting a statistically significant difference (P<.05). Conclusion: As a result, dental prosthesis fabricated using the single method presented better internal adaptation outcomes.

Keywords

References

  1. Anadioti E, Aquilino SA, Gratton DG, et al. 3D and 2D Marginal Fit of Pressed and CAD/CAM Lithium Disilicate Crowns Made from Digital and Conventional Impressions. J Prosthodont. 2014; 23(8): 610-617. https://doi.org/10.1111/jopr.12180
  2. Beuer F, Schweiger J, Edelhoff D. Digital dentistry: an overview of recent developments for CAD/CAM generated restorations. Brdent J. 2008; 204(9): 505-511.
  3. De Souza AF, Diniz AE, Rodrigues AR, Coelho RT. Investigating the cutting phenomena in free-form milling using a ball-end cutting tool for die and mold manufacturing. Int J Adv Manuf Technol 2014: 71: 1565-1577. https://doi.org/10.1007/s00170-013-5579-4
  4. Kim GM , Kim BH, Chu CN. Estimation of cutter deflection and form error in ball-end milling processes. Int J March Tools Manufact, 43: 917-924, 2003. https://doi.org/10.1016/S0890-6955(03)00056-7
  5. Kim JH, Kim KB, Kim WC, Kim JH, Kim HY. Accuracy and precision of polyurethane dental arch models fabricated using a three-dimensional subtractive rapid prototyping method with an intraoral scanning technique. Korean J Orthod 2014: 44: 69-76. https://doi.org/10.4041/kjod.2014.44.2.69
  6. Kim JH, Kim KB, Kim WC, Rhee HS, Lee IH, Kim JH. Influence of various gypsum materials on precision of fit of CAD/CAM-fabricated zirconia copings. Dent Mater J, 34(1), 19-24, 2015. https://doi.org/10.4012/dmj.2014-141
  7. Kim KB, Kim JH, Kim WC, Kim JH. Threedimensional evaluation of gaps associated with fixed dental prostheses fabricated with new technologies. J Prosthet Dent, 112, 1432-1436, 2014. https://doi.org/10.1016/j.prosdent.2014.07.002
  8. Nakamura T, Dei N, Kojima T, Wakabayashi K. Marginal and internal fit of Cerec 3 CAD/CAM all-ceramic crowns. Int J Prosthodont, 16, 244-248, 2003.
  9. Ng J, Ruse D, Wyatt C. A comparison of the marginal fit of crowns fabricated with digital and conventional methods. J Prosthet Dent, 112, 555-560, 2014. https://doi.org/10.1016/j.prosdent.2013.12.002
  10. Park JK, Lee WS, Kim HY, Kim WC, Kim JH. Accuracy evaluation of metal copings fabricated by computer-aided milling and direct metal laser sintering systems. J Adv Prosthodont, 7(2), 122-128, 2015. https://doi.org/10.4047/jap.2015.7.2.122
  11. Pradies G, Zarauz C, Valverde A, Ferreiroa A, Martinez-Rus F. Clinical evaluation comparing the fit of all-ceramic crowns obtained from silicone and digital intraoral impressions based on wavefront sampling technology. J Dent, 43, 201-208, 2015. https://doi.org/10.1016/j.jdent.2014.12.007
  12. Quaas S , Rudolph H, Luthardt RG. Direct mechanical data acquisition of dental impressions for the manufacturing of CAD/CAM restorations. J Dent, 35, 903-908, 2007. https://doi.org/10.1016/j.jdent.2007.08.008
  13. Rekow D. Computer-aided design and manufacturing in dentistry: a review of the state of the art. J Prosthet Dent, 58(4), 512-516, 1987. https://doi.org/10.1016/0022-3913(87)90285-X
  14. Rudolph H, Luthardt RG, Walter MH. Computeraided analysis of the influence of digitizing and surfacing on the accuracy in dental CAD/CAM technology. Comput Biol Med, 37, 579-587, 2007. https://doi.org/10.1016/j.compbiomed.2006.05.006
  15. Samet N, Resheff B, Gelbard S, Stern N. A CAD/CAM system for the production of metal copings for porcelain-fused-to-metal restorations. J Prosthet Dent, 73(5), 457-463, 1995. https://doi.org/10.1016/S0022-3913(05)80075-7
  16. Shah S , Sundaram G, Bartlett D, Sherriff M. The use of a 3D laser scanner using superimpositional software to assess the accuracy of impression techniques. J Dent, 32, 653-658, 2004. https://doi.org/10.1016/j.jdent.2004.07.005
  17. Tinschert J, Natt G, Mautsch W, Spiekermann H, Anusavice K. Marginal fit of aluminaand zirconia-based fixed partial dentures produced by a CAD/CAM system. Oper dent, 26(4), 367-374, 2001.
  18. Tinschert J, Natt G, Hassenpflug S, Spiekermann H. Status of current CAD/CAM technology in dental medicine. Int J Computer Dent, 7, 25-45, 2004.
  19. Vafiadis D, Goldstein G. Single visit fabrication of a porcelain laminate veneer with CAD/CAM technology: a clinical report. J Prosthet Dent, 106(2), 71-73, 2011. https://doi.org/10.1016/S0022-3913(11)00100-4