ON THE MARGINAL FIDELITY OF ALL-CERAMIC CORE USING CAD/CAM SYSTEM

CAD/CAM을 이용하여 제작한 All-ceramic core의 변연 적합도

  • Kim Dong-Keun (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Cho In-Ho (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Lim Ju-Hwan (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Lim Heon-Song (Department of Prosthodontics, College of Dentistry, Dankook University)
  • 김동근 (단국대학교 치과대학 보철학교실) ;
  • 조인호 (단국대학교 치과대학 보철학교실) ;
  • 임주환 (단국대학교 치과대학 보철학교실) ;
  • 임헌승 (단국대학교 치과대학 보철학교실)
  • Published : 2003.02.01

Abstract

Novel methods producing supplementary and prosthetic material by cutting or discharge processing via computer design have been proposed as alternatives for traditional casting methods and are being utilized for commercial purposes. The CAD/CAM system used in dentistry can be classified into three-dimensional input of target values, restoration design, and material processing. The marginal fidelity in production of In-Ceram core has important clinical implications and is a key consideration issue in CAD/CAM production as well. Through this research, the author arrived at the following conclusion aaer conducting comparison analysis of marginal fidelities between the In-Ceram core produced via CAD/CAM and that produced through the traditional method ; 1. In the cases of mesial, distal, and lingual margins, the core margins via CAD/CAM produced lower values than those via the traditional method, but the differences were found to be statistically insignificant. 2. In the case of labial flange, the core margins via CAD/CAM produced lower values than those via the traditional method and the differences were found to be statistically significant. (p<0.05) 3. In comparision with overall marginal fidelity, the core margins via CAD/CAM produced lower values than those via the traditional method, but the differences were found to be statistically insignificant. 4. Among the core margins produced via the traditional method did not have statistically significant differences but fir those produced via CAD/CAM had statistically significant differences between labial and lingual sides and between labial and mesial sides. (p <0.05).

Keywords

References

  1. Denissen HW, van der Zel JM, van Waas MAJ. Measurement of the margins of partial-coverage tooth preparation for CAD/CAlM. Int J Prosthodont 1999;12:395-400
  2. May KB, Russell MM, Razzoog ME, Lang BR. Precision of fit : The procera allceram crown. J Prosthet Dent 1998;80:394-404 https://doi.org/10.1016/S0022-3913(98)70002-2
  3. Mormann WH, Schug J. Grinding precision and accuracy of fit of CEREC2 CAD-CIM inlays. JADA 1997;128:47-53
  4. LaBarre EE, Belser UC, Meyer JM, Watanabe L. Computer-aided design and transverse strength of screw-retained attachment. Int J Prosthodont 1994;7:323-328
  5. Liu PR, Isenberg BP, Leinfelder KF. Evaluating CAD-CAM generated ceramic veneers. JADA 1993;124:59-63
  6. Andersson M, Carlsson L, Persson M, Bergman B. Accuracy of machine milling and spark erosion with a CAD/CAM system. J Prosthet Dent 1996;76:187-193 https://doi.org/10.1016/S0022-3913(96)90305-4
  7. Schmitt SM, Chance DA, Cronin RJ. Refining cast implant-retained restorations by electrical discharge machining. J Prosthet Dent 1995;73:280-283 https://doi.org/10.1016/S0022-3913(05)80206-9
  8. Evans DB. Correcting the fit of implant-retained restorations by electric discharge machining. J Prosthet Dent 1997;77:212-215 https://doi.org/10.1016/S0022-3913(97)70238-5
  9. Maeda Y, Minoura M, Tsutsumi S, Okada M, Nokubi T. A CAD/CAM System for Removable Denture. Part I: Fabrication of Complete Dentures. Int J Prosthodont 1994;7:17-21
  10. Rinke S, Huls A, Jahn L. Marginal Accuracy and Fracture Strength of Conventional and Copy-Milled All-Ceramic Crowns. Int J Prosthodont 1995;8:303-310
  11. Andersson M, Razzoog ME, Od n A, Hegenbarth EA, Lang BR. Procera : A new way to achieve an all-ceramic crown. Quintessence Int 1998;29:285-296
  12. Persson M, Andersson M, Bergman B.The accuracy of a high-precision digitizer for CAD/CAM of crowns. J Prosthet Dent 1995;74:223-229 https://doi.org/10.1016/S0022-3913(05)80127-1
  13. Kawata N, Ono H, Nishi Y, Hamano T, Nagaoka E. Trial of duplication procedure for complete denture by CAD/CAM. J Oral Rehabil 1997;24:540-548 https://doi.org/10.1046/j.1365-2842.1997.00522.x
  14. Sohmura T, Takahashi J. Use of CAD/CAM system to fabricate dental prostheses. part 1: CAD for a clinical crown restoration. Int J Prosthodont 1995;8:252-258
  15. Besimo C, Jeger C, Guggenheim R. Marginal adaptation of titanium frameworks produced by CAD/CAM techniques. Int J Prosthodont 1997;10:541-546
  16. Dastane A, Vaidyanathan TK. Vaidyanathan J, Mehra R, Hesby R. Development and evaluation of a new 3-D digitization and computer graphic system to study the anatomic tissue and restoration surface. J Oral Rehabil 1996;23:25-34 https://doi.org/10.1111/j.1365-2842.1996.tb00808.x
  17. Sturdevant JR, Bayne SC, Heymann HO. Margin gap size of ceramic inlays using second-generation CAD/CAM equipment. J Esthet Dent 1999;11:206-214 https://doi.org/10.1111/j.1708-8240.1999.tb00400.x
  18. Kim IS, Kim BO, Yoo KH, Kang DW. Design and fabrication of inner kcuus crown using three dimensional computer graphics. J Kor Academy of Pros. 2002;38:544-551
  19. Ha JK. Machining methods of CNC. II Jin Sa. 1997; p.74-75
  20. McLean JW. Von Fraunhofer JA. The estimation of cement film thickness by an invivo technique. Br Dent J Aug 3;1971;131:107-111
  21. Mclean JW. polycarboxylate cements. : Five years' experience in general practice. Br Dent J 1972;132:9-15 https://doi.org/10.1038/sj.bdj.4802795
  22. Van Roekel NB. Electrical Discharge machining in Dentistry. Int J Prosthodont 1992;5:114-121
  23. Chan DCN, Blackman R, Kaiser DA, Chung K. The effect of sprue design on the marginal accuracy of titanium castings. J Oral Rehabil 1998;25:424-429 https://doi.org/10.1046/j.1365-2842.1998.00268.x
  24. Jenkins CBG. Phillips RW. An evaluation of five inlay investing techniques employed with different types of wax patterns. J Prosthet Dent 1971;25:211-220 https://doi.org/10.1016/0022-3913(71)90110-7
  25. Mitchem JC, Wagner PC, Ferracane JL. Marginal adaptation of the Concept inlay system. Am J Dent 1994;7:232-234
  26. Small BW. Product review: All-ceramic system. General Dent 1998;446-448
  27. Felton DA, Kanoy BE, Bayne SC, Wirthman GP. Effect of in vivo crown margin discrepancies on periodontal health. J Prosthet Dent 1991;65:357-364 https://doi.org/10.1016/0022-3913(91)90225-L
  28. Willer J, Rossbach A, Weber HP. Computer assisted milling of dental restoration using a new CAD/CAM data acquisition system. J Prosthet Dent 1998;80:326-353
  29. The editorial committee of great dictionary of mechanical engineering. The great dictionary of mechanical engineering. Jib Moon Sa 1995;p.826-827
  30. Sorensen JA. A standardized method for determination of crown margin. J Prosthet Dent 1990;64:18-24 https://doi.org/10.1016/0022-3913(90)90147-5
  31. Kay GM, Jablonski DA, Dogon IL. Factors affecting the seating and fit of complete crowns : A computer simulation study. J Prosthet Dent 1986;55:13-18 https://doi.org/10.1016/0022-3913(86)90062-4
  32. Jorgensen KD. Factors affecting the film thickness of zinc phosphate cements. Acta Odontol Scan 1960;18:479-490 https://doi.org/10.3109/00016356009043879
  33. Cooper TM, Christensen GJ, Laswell HR, Baxter R. Effect of venting on cast gold full crowns. J Prosthet Dent 1971;26:621-626 https://doi.org/10.1016/0022-3913(71)90086-2
  34. Eames WB, O'Nell SJ, Montiero J, Miller G, Roan JD, Kohen KS. Technique to improve seating of casting. JADA 1978;96:432-437
  35. Fusayama T, Ide K, Hosoda H. Cement thickness between cast restoration walls. J Prosthet Dent 1963;13:354-364 https://doi.org/10.1016/0022-3913(63)90181-1
  36. Kydd WL, Nicholls JI, Harrington G, Freeman M. Marginal leakage of cast gold crowns luted with zinc phosphate cement: an in vivo study. J Prosthet Dent 1996;75:9-13 https://doi.org/10.1016/S0022-3913(96)90411-4
  37. Christensen GJ. Marginal fit of gold inlay asting. J Prosthet Dent 1966;16:297-305 https://doi.org/10.1016/0022-3913(66)90082-5
  38. Belser DC, Mecentee MI, Richter WA. Fit of three porcelain-fused-to-metal marginal designs in vivo : A scanning electron microscope study. J Prosthet Dent 1985;53:24-29 https://doi.org/10.1016/0022-3913(85)90058-7
  39. Byrne G, Goodacre CJ, Dykema RW, Moore BK. Comparative casting accuracy of high-palladium alloys. J Prosthet Dent 1986;55:297-301 https://doi.org/10.1016/0022-3913(86)90106-X
  40. West AJ, Goodacre CJ, Moore BK, Dykema RW. A comparison of four techniques for fabricating collarless metal ceramic crowns. J Prosthet Dent 1985;54:636-642 https://doi.org/10.1016/0022-3913(85)90238-0
  41. Pera P, Bassi F, Carossa S. In vitro margin aladaptation of alumina porcelain ceramic crown. J Prosthet Dent 1994;72:585-590 https://doi.org/10.1016/0022-3913(94)90289-5
  42. Rinke S, Margraf G, Jahn L, Huls A. Qualitatsbeurteilung von Kopiergefrasten Voll-Keramischen Kronengesusten(Celay/In-Ceram). Schweiz Monatsschr Zahnmed 1994;104:1495-1499
  43. Koo JY, Lim JH, Cho IH. Marginal fidelity according to the margin types of all ceramic crowns. J Kor Academy of Pros. 1997;35:445-457
  44. Tinschert J, Natt G, Mautsch W, Spiekermann H, Anusavice KJ. Marginal fit of alumina-and zirconia-based fixed partial dentures produced by a CAD/CAM system. Oper Dent 2001;26(4):367-374
  45. Chen Y, Zhao Y, Wang H. Marginal fit of CAD/CAM ceramic inlays. Hua Xi Kou Qiang Yi Xue Za Zhi 1997;15:317-318
  46. Sulaiman F, Chai J, Jameson LM, Wozniak WT. A comparison of marginal fit of In-ceram, IPS Empress, and Procera Crowns. Int J Prosthodont 1997;10:478-484
  47. Denissen H, Dozi, A, van der Zel J, van Waas M. Marginal fit and short-term clinical performance of porcelain-veneered CICERO, CEREC, and Procera onlays. J Prosthet Dent 2000;84:506-513 https://doi.org/10.1067/mpr.2000.110258
  48. Valderrama S, Van Roekel N, Andersson M, Goodacre CJ, Munoz CA. A comparison of the marginal and internal adaptation of titanium and gold-platinum-palladium metal ceramic crowns. Int J Prosthodont 1995;8:29-37
  49. Palomo F, Peden J. Periodontal consideration of restorative procedure. J Prosthet Dent 1976;36:387-394 https://doi.org/10.1016/0022-3913(76)90159-1
  50. Bjorn AL, Bjorn H, Grkovic B. Marginal fit of restoration and its relation to periodontal bone level. Part I. Metal Fillings, Odontol Revy 1969;20:311-321
  51. Molin MK, Karlsson SL, Kristiansen MS. Influence of film thickness on joint bend strength of ceramic/resin composite joint. Dental Material 1996;12:245-249 https://doi.org/10.1016/S0109-5641(96)80030-3