The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

A STUDY ON THE STRESS DISTRIBUTION OF THE ALL CERAMIC CROWNS ACCORDING TO THE CUSP ANGLE OF THE MAXILLARY FIRST PREMOLAR USING THREE DIMENSIONAL FINITE ELEMENT METHOD

상악 제1소구치의 교두각에 따른 전부도재관의 응력분포에 관한 삼차원유한요소법적 연구

  • Kim Won-Kyu (Department of Prosthodontics, School of Dentistry, Wonkwang University) ;
  • Shin Dong-Kuk (Department of Prosthodontics, School of Dentistry, Wonkwang University) ;
  • Song Kie-Bum (Department of Prosthodontics, School of Dentistry, Wonkwang University) ;
  • Dong Jin-Keun (Department of Prosthodontics, School of Dentistry, Wonkwang University)
  • 김원규 (원광대학교 치과대학 치과보철학교실) ;
  • 신동국 (원광대학교 치과대학 치과보철학교실) ;
  • 송기범 (원광대학교 치과대학 치과보철학교실) ;
  • 동진근 (원광대학교 치과대학 치과보철학교실)
  • Published : 2004.02.01
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Abstract

Statement of problem : Clinically, maxillary first premolar has a high risk of fracture. This is thought to be caused by the susceptible figure which the maxillary first premolar has In other words, sharp cusp angles of the premolar is thought to influence this situation. Purpose : This study was to know stress distribution of all-ceramic crown according to the cusp angle. Material and Method : It was manufactured a three dimensional finite element model simplified maxillary first premolar, and then analyzed stress distribution when cusp angle was each $80^{\circ}$, $90^{\circ}$, $100^{\circ}$, $110^{\circ}$ and $120^{\circ}$. Results and conclusion : 1. The von Misses stress showed that stress decreases as cusp angle increases in the central groove of the occlusal surface. 2. It showed that maximum principal stress was centered at the region of the central groove of the occlusal surface and a region which the force was inflicted. And also it appeared high on the lingual and buccal side of finish line. 3. The X axis of normal stress was focused in the central groove of the occlusal surface. The Y axis normal stress appeared high in the central groove of the occlusal surface, buccal and lingual side. 4. The Stress near the finish line showed a low value compared with stress in the region of the central groove of the occlusal surface. 5. It shows that the most dangerous angle for tooth fracture was on $80^{\circ}$ of the cusp angle and low on $120^{\circ}$ of its.

Keywords

References

  1. Southan DE, Jorgensen KD. Faulty porcelain jacket crowns. Aust Dent J, 1973; 18:152-156 https://doi.org/10.1111/j.1834-7819.1973.tb03452.x
  2. Clause H. Vita In-Ceram a new system for producing aluminum oxide crown and bridge substructures. Quintessenz Zahntech 1990;16:35-46
  3. Optec HSP laboratory technique manual. J eneric/Pentro Inc, Wallingford. Conn, January, 1988
  4. Beham G. IPS-Empress. A new ceramic technology. Ivoclar-Vivadent report.1990;6:1-13
  5. Schwickerrath H. Die In-Ceram Aluminiumoxid-Keramiken innovativer dental kelamischer Werkstoff. Dent Labor. 1989;37:1597
  6. Adair PJ, Grossman DG. The castable ceramic crown. Int J Periodont Rest Dent. 1984;2:32-45
  7. Dicor laboratory manual, Dentsply international, York, PA, 1987
  8. Kelly JR. Giordano R. Pober R. Cima MJ. Fracture surface analysis of dental ceramics: clinically failed restorations. Int J Prosthodont. 1990;3:430-440
  9. Kern M, Doglas WH, Fechtig T, Strub JR, Delong R, Fracture strength of all-pocelain. Resin bonded bridges after testing in an artificial oral environment. J Prosthet Dent, 1993;21:117-121
  10. Doyle MG, Goodacre CJ. Andres CJ. The effect of tooth preparation design on the breaking strength of Dicor crown: Part 3. lnt J Prosthodont. 1990;3:327-340
  11. Fiedlander LD, Munoz CA, Goodacre CJ, Doyle MG, Moor BK. The effect of tooth preparation design on breaking strength of Dicor crowns: Part 1. Int J Prosthodont, 1990;3:159-164
  12. Yoshinari M, Derand T. Fracture strength of all-ceramic crowns. Int J Prosthodont, 1994;7:329-338
  13. Eden GT, Kacicz JM. Dieor crown strength improvement due to bonding. J Dent Res, 1987;66:207 abstr No. 802
  14. Grossman DG. Nelson JW. The bonded Dicor crown; J Dent Res 1987;66:206 abstr No.800
  15. Sjogren G. Clinical Examination of LeuciteReinforced Glass-Ceramic Crowns(Empress) In General Pactice: Int J Prosthodont. 1999;12:124-125
  16. Browning JD. Meador LW. Eick JD. Movement of three removable partial denture clasp assemblies under occlusal loading. Int J Prosthodont Dent. 1986;55:69-74
  17. Weijs WA. and Dejongh HT : Strain in mandibular alveolar bone during mastication in the rabbit. Arch. Oral. Biol. 1977;22:667-675
  18. Ralph WJ. and Williams JF : Analysis of stresses in alveolar bone (A two-dimensional photoelastic model). Arch. Oral.Biol. 1975;20:411-414 https://doi.org/10.1016/0003-9969(75)90225-3
  19. Standlee JP. Caputo AA. and Ralph JP. Stress trajectories within the mandible under occlusal loads. J.Dent.Res. 1977;56:1297-1302
  20. Kratochvil FJ. Thompson WD and Caputo AA. Photoelastic analysis of stress patterns on teeth and bone with attatchment retainers for removable partial dentures. J.Prosthet. Dent. 1981;46:21-28
  21. Anydinlink E. Akay HU. Effect of resilient layer in a removable partial denture base on stress distribution to the mandible. Int J Prosthodont Dent. 1980;44:17-20
  22. Shohet H. Relative magnitude of stress on abutment teeth with different retainers. J Prosthet Dent.. 1969;21:267-282 https://doi.org/10.1016/0022-3913(69)90290-X
  23. Craig RG. Farah JW. Stresses from loading distal-extension removable partial dentures. J Prosthet Dent .,1976;36:243-253
  24. Knoell AC. A mathematical model of an in vitro human mandible. J.Bio-mechanics. 1977;10:159-166
  25. Anusavice KJ. Hojjatie B. Influence of incisal length of ceramic and loading orientation on stress distribution in ceramic crowns. J Dent Res .. 1988;67:1371-1375
  26. Anusavice KJ. Hojjatie B. Stress distribution in metal-ceramic crowns with a facial porcelain margin. J Dent Res., 1987;66:1493-1498
  27. Chai JY. Steege JW. Effects of labial margin design on stress distribution of a porcelain-fused-to-metal crown. J Prosthodont. 1992;1:18~23
  28. Saklad MJ. The disclosure of cleavage and fracture lines in porcelain restorations. Int J Prosthodont Dent. 1958;8:115
  29. Pettrow JN. Practical factors in building and firing characteristics of dental porcelain. J Prosthet Dent., 1961;11:334 https://doi.org/10.1016/0022-3913(61)90209-8
  30. Oppice HW. A resume of ideas on porcelain jacket crown preparations. J Am. Dent. Assoc. 1934:21:1030-1039
  31. Rosenstiel SF. Land MF. Fujimoto M. Contemporary fixed prosthodontics. 1st ed. Mosby Co. 1987
  32. Dykema RW. Goodacre CJ. Phillips RW. Johnston' s modern practice in fixed prosthodontics. 4th ed. WB. Saunders Co. 1986
  33. Malone WFP. Koth DL. Tylman' s theory and practice of fixed prosthodontics. 8th ed, Ishiyaku EuroAmerica Inc. 1989
  34. Derand T. The importance of an even shoulder preparation in porcelain crowns. Odontol. Rev. 1972;23:305-314
  35. Sjogren G. Bergman M. Relationship between compressive strength and cervical shaping of the all-ceramic Cerestore crown. Swed Dent J. 1987;11:147-152
  36. Friedlander. LD. Munoz CA. Goodacre CJ. Doyle MG. Moore BK. The effect of tooth preparation design on the breaking strength of Dicor crowns : Part 1. Int J Prosthodent, 1990;3:159-168
  37. Bernal G, Jones RM, Brown DT. Munoz CA, Goodacre CJ. The effect of finish line form and luting agent on the breaking trength of Dicor crowns. Int Prosthodont., 1993;6:286-290
  38. Kim HS, Ju TH, Oh SC. Dong JK. A study in the fracture strength of the lPSEmpress ceramic crown according to margin type. J Korean AcademyProsthodontics. 1997;35:296-307
  39. Jensen ME. Sheth JJ, and Tolliver D. Etched-porcelain resin-bonded full-veneer crowns: in vitro fracture resistance. Compend Contin Educ Dent, 1989;X(6):336-346
  40. Duffin JL, Bales DJ, Johnson GH. Fracture resistance of castable ceramic crowns(abstract). J Dent Res 1989;68:235
  41. Hsu CS. Stangel I, Nathanson D. Shear bond strength of resin to etched porcelain(abstract). J Dent Res 1985;64:296
  42. McInnes-Ledoux PM. Ledoux WR, Weinberg R, Pappold A. Luting castable ceramic restorations- a bond strength study(abstract) J Dent Res. 1987;66:245
  43. Deboever JA, McCall WD. Holden S, Ash MM. Functional occlusal forces : An investigation by telemetry. J Prosthet Dent. 1978;40:326-333 https://doi.org/10.1016/0022-3913(78)90042-2
  44. Kawamura Y. Oral physiology.Kyoto. Japan.Nagamatsu Shoten. 1976;212-227
  45. Kober KH, Ludwig K. Maximale Kaukraft als Berechnungsfaktor zahntechnischer Konstruktionen. Dent Labor. 1983;31:55-60