The Journal of Advanced Prosthodontics

  • 제3권3호
  • /
  • Pages.113-118
  • /
  • 2011
  • /
  • 2005-7806(pISSN)
  • /
  • 2005-7814(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지
DOI QR코드

DOI QR Code

Alternate metal framework designs for the metal ceramic prosthesis to enhance the esthetics

  • 투고 : 2011.02.20
  • 심사 : 2011.07.18
  • 발행 : 2011.09.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

PURPOSE. The objective of the present study was to evaluate the effect of five different metal framework designs on the fracture resistance of the metal-ceramic restorations. MATERIALS AND METHODS. For the purpose of this study, the central incisor tooth was prepared, and the metal analogue of it and a master die were fabricated. The counter die with the 0.5 mm clearance was used for fabricating the wax patterns for the metal copings. The metal copings with five different metal framework designs were designed from Group 1 to 5. Group 1 with the metal collar, Group 2, 3, 4 and 5 with 0 mm, 0.5 mm, 1 mm and 1.5 mm cervical metal reduction respectively were fabricated. Total of fifty metal ceramic crown samples were fabricated. The fracture resistance was evaluated with the Universal Testing Machine (Instron model No 1011, UK). The basic data was subjected to statistical analysis by ANOVA and Student's t-test. RESULTS. Results revealed that the fracture resistance ranged from 651.2 to 993.6 N/$m^2$. Group 1 showed the maximum and Group 5 showed the least value. CONCLUSION. The maximum load required to fracture the test specimens even in the groups without the metal collar was found to be exceeding the occlusal forces. Therefore, the metal frameworks with 0.5 mm and 1 mm short of the finish line are recommended for anterior metal ceramic restoration having adequate fracture resistance.

키워드

참고문헌

  1. Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics. 3rd ed. St Louis; Mosby; Elsevier publishers; 2001.
  2. Anusavice KJ. Philip's science of dental materials. 11th ed. Saunders; Elsevier publishers; 2003.
  3. Brecker SC. Porcelain baked to gold a new medium in prosthodontics. J Prosthet Dent 1956;6:801-10. https://doi.org/10.1016/0022-3913(56)90077-4
  4. Goodacre CJ, Van Roekel NB, Dykema RW, Ullmann RB. The collarless metal-ceramic crown. J Prosthet Dent 1977;38:615-22. https://doi.org/10.1016/0022-3913(77)90004-X
  5. Warpeha WS Jr, Goodkind RJ. Design and technique variables affecting fracture resistance of metal-ceramic restorations. J Prosthet Dent 1976;35:291-8. https://doi.org/10.1016/0022-3913(76)90253-5
  6. O'Boyle KH, Norling BK, Cagna DR, Phoenix RD. An investigation of new metal framework design for metal ceramic restorations. J Prosthet Dent 1997;78:295-301. https://doi.org/10.1016/S0022-3913(97)70029-5
  7. Prince J, Donovan T. The esthetic metal-ceramic margin: a comparison of techniques. J Prosthet Dent 1983;50:185-92. https://doi.org/10.1016/0022-3913(83)90009-4
  8. Sozio RB, Riley DJ. A precision ceramic-metal restoration with a facial butted margin. J Prosthet Dent 1977;37:517-21. https://doi.org/10.1016/0022-3913(77)90164-0
  9. Toogood GD, Archibald JF. Technique for establishing porcelain margins. J Prosthet Dent 1978;40:464-6. https://doi.org/10.1016/0022-3913(78)90134-8
  10. Vryonis P. A simplified approach to the complete porcelain margin. J Prosthet Dent 1979;42:592-3. https://doi.org/10.1016/0022-3913(79)90260-9
  11. Hamaguchi H, Cacciatore A, Tueller VM. Marginal distortion of the porcelain- bonded-to-metal complete crown: an SEM study. J Prosthet Dent 1982;47:146-53. https://doi.org/10.1016/0022-3913(82)90178-0
  12. Prince J, Donovan TE, Presswood RG. The all-porcelain labial margin for ceramometal restorations: a new concept. J Prosthet Dent 1983;50:793-6. https://doi.org/10.1016/0022-3913(83)90091-4
  13. Oram DA, Davies EH, Cruickshanks-Boyd DW. Fracture of ceramic and metalloceramic cylinders. J Prosthet Dent 1984;52: 221-30. https://doi.org/10.1016/0022-3913(84)90100-8
  14. Anusavice KJ, Hojjatie B. Stress distribution in metal-ceramic crowns with a facial porcelain margin. J Dent Res 1987;66: 1493-8. https://doi.org/10.1177/00220345870660091601
  15. Richter-Snapp K, Aquilino SA, Svare CW, Turner KA. Change in marginal fit as related to margin design, alloy type, and porcelain proximity in porcelain-fused-to-metal restorations. J Prosthet Dent 1988;60:435-9. https://doi.org/10.1016/0022-3913(88)90243-0
  16. Hinrichs RE, Bowles WF 3rd, Huget EF. Apparent density and tensile strength of materials for facially butted porcelain margins. J Prosthet Dent 1990;63:403-7. https://doi.org/10.1016/0022-3913(90)90227-4
  17. Belles DM, Cronin RJ Jr, Duke ES. Effect of metal design and technique on the marginal characteristics of the collarless metal ceramic restoration. J Prosthet Dent 1991;65:611-9. https://doi.org/10.1016/0022-3913(91)90193-Z
  18. Campbell SD, Pelletier LB. Thermal cycling distortion of metal ceramics: Part I-Metal collar width. J Prosthet Dent 1992;67: 603-8. https://doi.org/10.1016/0022-3913(92)90155-4
  19. Lund PS, Barber BA. The effect of porcelain veneer extension on strength of metal ceramic crowns. Int J Prosthodont 1992;5: 237-43.
  20. Boyle JJ Jr, Naylor WP, Blackman RB. Marginal accuracy of metal ceramic restorations with porcelain facial margins. J Prosthet Dent 1993;69:19-27. https://doi.org/10.1016/0022-3913(93)90234-F
  21. Smith TB, Kelly JR, Tesk JA. In vitro fracture behavior of ceramic and metal-ceramic restorations. J Prosthodont 1994;3: 138-44. https://doi.org/10.1111/j.1532-849X.1994.tb00144.x
  22. Lehner CR, Ma¨nnchen R, Scha¨rer P. Variable reduced metal support for collarless metal ceramic crowns: a new model for strength evaluation. Int J Prosthodont 1995;8:337-45.
  23. Gardner FM, Tillman-McCombs KW, Gaston ML, Runyan DA. In vitro failure load of metal-collar margins compared with porcelain facial margins of metal-ceramic crowns. J Prosthet Dent 1997;78:1-4. https://doi.org/10.1016/S0022-3913(97)70079-9
  24. Ku CW, Park SW, Yang HS. Comparison of the fracture strengths of metal-ceramic crowns and three ceromer crowns. J Prosthet Dent 2002;88:170-5. https://doi.org/10.1067/mpr.2002.127712
  25. Ulusoy M, Toksavul S. Fracture resistance of five different metal framework designs for metal-ceramic restorations. Int J Prosthodont 2002;15:571-4.
  26. Gibbs CH, Mahan PE, Lundeen HC, Brehnan K, Walsh EK, Holbrook WB. Occlusal forces during chewing and swallowing as measured by sound transmission. J Prosthet Dent 1981;46: 443-9. https://doi.org/10.1016/0022-3913(81)90455-8
  27. Silver M, Klein G, Howard MC. An evaluation and comparison of porcelain-fused-to-cast metals. J Prosthet Dent 1960;10: 1055-64. https://doi.org/10.1016/0022-3913(60)90215-8
  28. Nielsen JP, Tuccillo JJ. Calculation of interfacial stress in dental porcelain bonded to gold alloy substrate. J Dent Res 1972;51:1043-7. https://doi.org/10.1177/00220345720510040901
  29. Hinrichs RE, Bowles WF 3rd, Huget EF. Apparent density and tensile strength of materials for facially butted porcelain margins. J Prosthet Dent 1990;63:403-7. https://doi.org/10.1016/0022-3913(90)90227-4
  30. Waltimo A, Kononen M. A novel bite force recorder and maximal isometric bite force values for healthy young adults. Scand J Dent Res 1993;101:171-5.