Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

A Study on the Fracture Strength of All-Ceramic Crown according to the Zirconia Coping Design using CAD/CAM System

CAD/CAM을 이용하여 제작한 전부도재관의 지르코니아 코핑 디자인에 따른 파절강도에 관한 연구

  • Bulgan, L. (Department of Prosthodontics, Graduate School, Dankook University) ;
  • Cho, In-Ho (Department of Prosthodontics, Graduate School, Dankook University) ;
  • Shin, Soo-Yeon (Department of Prosthodontics, Graduate School, Dankook University)
  • 로도이 볼강 (단국대학교 치과대학 치과보철학 교실) ;
  • 조인호 (단국대학교 치과대학 치과보철학 교실) ;
  • 신수연 (단국대학교 치과대학 치과보철학 교실)
  • Published : 2006.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

A Study on the Fracture Strength of All-Ceramic Crown according to the Zirconia Coping Design using CAD/CAM System L. Bulgan, In-Ho Cho, Soo-Yeon Shin Department of Prosthodontics, Graduate School, Dankook University The fracture strength of prosthesis is important, because it affects the function, and long term success of prosthesis and teeth. The purpose of this study was to compare the fracture strength of zirconia coping designs. Experimental test group were classified into three designs according to coping design, Modified design: Zirconia coping margin was located at 1mm above the axiogingival line angle. Collarless design: The coping margin terminated at the axiogingival line angle Butt design: The coping margin was extended to the finishing line of prepared margin. A $Cercon^{(R)}$(Degussa, Germany) CAD/CAM system was used to make the zirconia coping. Fracture strength was measured using loading machine at a cross head speed of 1mm/min. The results were statistically analyzed using the one-way ANOVA and multiple comparison test. Statistical significance was set in advance at the probability level of less than 0.05. The result : I. Collarless($738N{\pm}155N$) and Modified($755N{\pm}185N$) groups showed significantly a lower fracture strength than Butt($1057N{\pm}262N$) group(p<0.05). II. There were no statistical differences of the fracture strength between Modified($755N{\pm}185N$) and Collarless($738N{\pm}155N$) groups. III. When comparing the fractured surface, all the group showed porcelain fracture, which were fractured at the labial surface of baked porcelain The butt design of the zirconia coping has higher fracture strength than modified and collarless design.

Keywords

References

  1. Beschnidt SM, Strub JR. Evaluation of the marginal accuracy of different All-ceramic crown systems after simulation in the artificial mouth. J Oral Rehabilitation 1999;26:582-593 https://doi.org/10.1046/j.1365-2842.1999.00449.x
  2. 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
  3. McLean JW, Hughes TH. The reinforcement of dental porcelain with ceramic oxides. Br Dent J 1965;119:251-267
  4. Sadoun M. All ceramic bridges with the slip casting technique. Presented at the 7th International Symposium on Ceramics. Paris 1988 September
  5. Schweiger M, Holand W, Frank M, et at. IPS-Empress 2 A new pressable high -strength glass-ceramic for esthetic all-ceramic restorations. Quintessence Dent Technol 1999;22:143-151
  6. Gu JY, Lim JH, Cho IH. The study of marginal adaptation associated with marginal design of all-ceramic crown. J Korean academy of prosthodontics 1997;35:445-452
  7. Duret F. The practical dental CAD/CAM in 1993. J Can Dent Assoc 1993;59:445-452
  8. Duret F, Blouin JL, Duret B. CAD/CAM in dentistry. J Am Dent Assoc 1988; 1zirconium:715-720
  9. Van der Zel JM. Ceramic-fused-to-metal restorations with a new CAD/CAM system. Quintessence Int 1993;24:769-778
  10. Levy H, Daniel X. Working with the In-Ceram porcelain system. Prosthese Dentaire 1990:44-45
  11. Luthardt R, Sandkuhl O, Reitz B. Zirconia-TZP and Alumina-advanced technologies for the manufacturing of single crowns. Eur J Prosthodont Restor Dent 2000;7: 113-119
  12. Mc Lazen EA, White SN. Glass-Infiltrated Zirconia/Alumina-Based Ceramic for Growns and fixed Partial Dentures. Proct Periodontics Aesthet Dent 1999;11 :985-994
  13. Yoshinari M, Derand T. Fracture strength of All ceramic crowns. Int J Prosthodont 1994;7(4):329-338
  14. Piemjar M. Effect of seating force, margin design, and cement on marginal seal and retention of complete metal crowns. Int J Prosthedent 2001;14(5): 412-416
  15. Sorensen JA, Torres TJ, Kang SK, Avera SP. Marginal Fidelity of ceramic crowns with different margin design. J Dent Res 1990;69:279-279
  16. Miller A, Long J, Miller B, Cole J. Comparison of the fracture strength of ceramo metal crowns versus several all-ceramic crowns. J Prosthet Dent 1992;68 (1):38-41 https://doi.org/10.1016/0022-3913(92)90281-E
  17. O'Boyle KH, Norling BK, Pheonix RD. An investigation of new metal foramework design for metal cermic restorations, J Prosther Dent 1977;78:295-301
  18. Choi SG, Lim JH, Cho IH. The marginal adaptation & fracture strength of Collarless crown dependent on coping design. J Korean academy of stomatognathic function and occlusion 1999;15:39-51
  19. Neiva G, Yaman P, Dennison JB, et at. Resistance to fracture of three All-ceramic systems. J Esthet Dent 1998;10(2):60-66 https://doi.org/10.1111/j.1708-8240.1998.tb00339.x
  20. Hwang SG, Cho IH. The marginal adaptation & fracture strength of several kind of all-ceramic crowns. J Korean academy of stomatognathic function and occlusion 2000;16:291-303
  21. Kim DG, Cho IH, Lim JH, Lin HS. The marginal adaptation of all-ceramic core used CAD/CAM technique. J Korean academy of prosthodontics 2003;41:20-33
  22. Ju YJ, Cho IH. The study of marginal adaptation associated with all-ceramic crown of CAD/CAM technique. Collection of dankook dental school journals 2003
  23. Liu PR, Isenberg BP, Leinfelder KF. Evaluating CAD/CAM generated ceramic veneers. JADA 1993;124:59-63
  24. Kiln OK, Cho IH, Lim JH. On the Marginal Fidelity of All-ceramic core using CAD/CAM system Thesis. Dankook Univ Post-graduate Course 2001
  25. Vrijoef MMA, Spanauf AJ, Renggli HH. Axial strengths of foil, All-ceramic and PFM molar crowns. Dent Mater 1988;4(1): 15-19 https://doi.org/10.1016/S0109-5641(88)80082-4
  26. Hobo S, Shillingburg HT. Porcelain fused to metal: Tooth preparation and coping design. J Prosthet Dent 1973;30:28-36 https://doi.org/10.1016/0022-3913(73)90075-9
  27. Preston JD. Rational approach to tooth preparation for ceramo-metal restrations. Dent Clin North Am 1977;21(4):683-698
  28. Denissen HW, Van Der Zel JM, Van Waas MAJ. Measurement of the margins of partial-coverage tooth preparation for CAD/CAM. Int J Prosthodont 1999;12: 395-400
  29. Berger RD. Esthetic considerations in framework design In Preston JD (ed). Perspectives in Dental ceramics Proceedings of the fourth international symposium on ceramics Quintessence 1988;237-249
  30. Donnavan T, Prince J. An analysis of margin Conf.igurations for metal-ceramic crown. J Prosthet Dent 1985;53: 153-157 https://doi.org/10.1016/0022-3913(85)90097-6
  31. Goodacre CJ, Van Roekel NB, Dykema RW, Ullmann RB. The collarless metal-ceramic crown. J Prosthet Dent 1977;38:615-622 https://doi.org/10.1016/0022-3913(77)90004-X