대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제41권5호
  • /
  • Pages.596-605
  • /
  • 2003
  • /
  • 0301-2875(pISSN)
  • /
  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

반복 사용된 IPS Empress 2의 표면경도와 pressing accuracy에 관한 연구

SURFACE HARDNESS AND PRESSING ACCURACY OF REUSED IPS EMPRESS 2

  • 손외수 (원광대학교 치과대학 치과보철학교실) ;
  • 김유리 (원광대학교 치과대학 치과보철학교실) ;
  • 이경자 (원광대학교 치과대학부속병원 중앙기공실) ;
  • 진태호 (원광대학교 치과대학 치과보철학교실)
  • Son Oe-Soo (Department of prosthodontics, Dental Infirmary, Wonkwang University) ;
  • Kim Yu-Lee (Department of prosthodontics, Dental Infirmary, Wonkwang University) ;
  • Lee Kyung-Ja (School of Dentistry and Central Lab. Dental Infirmary, Wonkwang University) ;
  • Jin Tai-Ho (Department of prosthodontics, Dental Infirmary, Wonkwang University)
  • 발행 : 2003.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Statement of problem : IPS Empress2 system was developed and used in prosthodontic treatment, but the cost of ingot is expensive for wide application. Purpose : This study was to investigate the possibility on recycling of IPS Empress 2 ceramic for wide application of IPS Empress 2 ceramic in prosthodontic treatment. Material and Method : 1st, 2nd and 3rd pressed disc-shaped($10{\times}1.5mm$) IPS Empress 2 specimens were made with IPS Empress ingot(200, Ivoclar, Liechtenstein) and pressing furnace(IPS Empress EP 500, Ivoclar, Liechtenstein). Vicker's surface hardness and fracture toughness, acid resistance, and pressing accuracy of IPS Empress 2 ceramic were measured and analyzed. Surface hardness was measured by microhardness tester(MTX 70. Matsuzawa, Japan), before and after surface treatment with 0.5% hydrofluoric acid and carbonic acid(Coca cola) for evaluation of acid resistance. Results : The surface hardness of 1st pressed specimen was the higher(5.11 GPa) than those of 2nd pressed(4.89 GPa) and 3rd pressed specimen(4.86 GPa), and the fracture toughness of 1st pressed ($1.58MPam^{1/2}$) and 2nd pressed specimen($1.51MPam^{1/2}$) were higher than that of 3rd pressed specimen($1.39MPam^{1/2}$). The changes of surface hardness of 1st, 2nd, and 3rd pressed specimens after treatment with fluoric acid were 0.17, 0.06, 0.05 (GPa) respectively, and those of 1st, 2nd, and 3rd pressed specimens after treatment with carbonic acid were 0.07, 0.00, 0.05(MPa) respectively. The pressing accuracy of 1st,2nd and 3rd specimen were 77.22%, 85.681%, and 75.05%. The pressing accuracy of 2nd pressed specimen was higher than that of the 3rd specimen. Conclusion : The changes of physical properties according to recycling of IPS Empress 2 from this study were insignificant. Therefore the possibility of recycling of IPS Empress 2 can be suggested from the results.

키워드

참고문헌

  1. Nam SK. The Theory and fact of metal-ce ramics. Jeeseung, 1997
  2. Ryu SY, Lim JH. Cho IH. A study on the color stabilityof porcelain for porcelain fused to metal crown. J Korean Acad Prosthodont 2000: 37: 73-84
  3. Kim HS , Ju TS , Oh SC, Dong J K. A Study on the fracture strength of the IPS-Empress ceramic crown according to margin. J Korean Acad Prosthodent 1997 ;35:296-307
  4. Ju TH. Oh SC, Dong J K. A Study on the fitness of the IPS Empress ceramic crown accotding to margin type. J Korean Acad Prosthodont 1998:36:846-857
  5. Southam DE, Jorgensen KD. Faulty porcelain jacket crowns. Aust Dent J 1973:18:152-156
  6. Southam DE. Jorgensen KD Faulty porcelain jacket crowns. Aust Dent J. 1972;17:436-440 https://doi.org/10.1111/j.1834-7819.1972.tb04974.x
  7. Oh SC, Dong JK. A study on the flexural strength of heat-pressed ceramics ac cording th sprue designs. J Korean Acad Prosthodont 1997;35:130-140
  8. Land CH. A new system of restoring badly decayed teeth by means of an enamelled metallic coating. Independent Practitioner 1886:7:407
  9. McLean JW, Hughes H. The reinforcement of dental porcelain with ceramic oxides. Br Dent 1984:4:32-46
  10. Adair PJ, Grossman DG. The castable ceramic crown. Int J Periodont Rest Dent 1984:4:32-46
  11. Hobo S, Iwata T. Castable apatite ceramics as a new biocompatible restorative material. Theoretical considerations. Quintessence Int 1985:16:135
  12. Sozio RB, Riley EJ. The shrink-free ceramic crown. J Porsthet Dent 1983:49:182-7
  13. Vita Zahnfabrik. Vita Hi-ceram Working Instructions. Bad Sackingen Germany 1988
  14. Optec Hsp laboratory technique manual. Jeneric / Pentro Inc Wallingford CN January 1988
  15. Sadoun M. All ceramic bridges with the slip casting technique. Presented at the 7th international symposium on ceramics , Paris , September, 1988
  16. Wohlwend A. Scharer P. The Empress technique a new technique for the fabrication of full ceramic crowns , inlays, and veneers. (In-German). Quintessenz Zahntech 1990;16:966-978
  17. Dong JK. Luthy H; Wbhelwend A. Scharer P. Heat-Pressed Ceramics Technology and strength. Int J Prosthodont 1992:5:9-16
  18. Beham G. IPS-Empress; A new ceramic technology. Ivoclar-Vivadent Report 1990;6:1
  19. Holand W, Schweiger M, Frank M, Rheinberger V. A comparison of the microstructure and properties of the IPS Empress 2 and the IPS Empress glass-ceramics. J Biomed Mater Res 2000;53:297-303 https://doi.org/10.1002/1097-4636(2000)53:4<297::AID-JBM3>3.0.CO;2-G
  20. Holand W. Materials science fundamentals of the IPS Empress 2 glass-ceramic. Ivoclar Vivadent Report 1998;12:3-10
  21. Schweiger M. Holand W. Frank M. IPS Empress 2: A new pressable high-strength glass-ceramic for esthetic all-ceramic restorations. Quintessence DentTech 1999;22:143-151
  22. Severance G. Introducing a lithium disilicate glass-ceramic: IPS empress 2. Signature 1999 :4:1-3
  23. Jochen DG, Caputo AA, Matyas J. Reuse of silver-palladium ceramic metal. J Prosthet Dent 1991; 6: 588-591
  24. Rasmussen ST, Doukoudakis AA. The effect of using recast metal on the bond between porcelain and gold-palladium alloy. J Prosthet Dent 1986;55:447-452 https://doi.org/10.1016/0022-3913(86)90174-5
  25. Reisbick MH; Brantley WA. Mechanical property and microstructural variations for recast low-gold alloy. Int J Prosthodont 1995;8: 346-350
  26. Henriques GE , Consani S, Rollo JM, Andrade E, Silva F. Soldering and remelting influence on fatigue strength of cobalt chromium alloy. J Prosthet Dent 1997;78:146-152 https://doi.org/10.1016/S0022-3913(97)70118-5
  27. Sorensen JA. Cruz M, Mito WT. Research evaluations of a lithium disilicate restorative system: IPS Einpress2. Signature 1999 :4:4-10
  28. Seghi RR. Sorensen JA. Relative flexural strength of six new ceramic materials, Int J Prosth 1995;8:239-246
  29. Green DJ. Microcracking mechanism in ceramics , In Bradt RC, Evans AG, Lange FF. and Hasselman DP. Fracture Mechanics of ceramics. New York plenum press 1983;15:457-478
  30. Gree DJ , Hannink FHJ, Swain MV. Transformation toughening of ceramics. Boca Raton, F.L. : CRC Press , 1989:57-91
  31. Faber KT, Evans AG. Crack deflection processes , I Theory. Acta Metall 1983;31:565-576 https://doi.org/10.1016/0001-6160(83)90046-9
  32. Faber KT, Evans AG. Crack deflection processes, II Experiment. Acta Metall 1983;31:577-584 https://doi.org/10.1016/0001-6160(83)90047-0
  33. Steinbrech R, Khehans R, Schaarwachter W. Increase of crack resistance during slow crack growth in A1203 bend specimens. J Mater Sci 1983;15:265-269
  34. Swanson PL, Fairbanks CJ, Lawn BR, Mai YW, Hockey BJ. Crack-inter-face grain bridging as afracture resistance mechanism in ceramics. J Am Ceram Soc 1987;70:279-284 https://doi.org/10.1111/j.1151-2916.1987.tb04982.x
  35. Dong J K. Luthy J , Wohlwend A. Scharer P. Heat-pressed ceramics: Technology and Strength. Int J Prosthodont 1992:5:9-16
  36. Dong JK. Oh SC. A study on the microstructure of IPS Empress ceramic according to the heat treatment and the sprue type. J Korean Acad of Prosthodont 1998:36:73-86
  37. Oh SC. Dong J K. Luthy H. Scharer P. Strength and microsturcture of IPS Empress 2 glass-ceramic after different treatments Int J Prosthodont 2000:13:468-72
  38. Song BK. Park HB. Oh SC. Jin TH. A study on the pressing accuracy of the reused IPS-Empress lngot. J Korean Acad Prosthodont 1997: 35: 357-364
  39. Jin TH. Park HB. Physical properties of the reused IPS Empress ceramic. Part I. Color stability. J Wonkwang Institute Dent Res 1997:7:133-8
  40. Jin TH. Kim HJ. Physical properties of the reused IPS Empress ceramic. Part II. Study on the flexure strength. J Korean Acad Prosthodont 1998 :36: 524-529
  41. Jin TH. Song YK. Physical properties of the reused IPS Empress ceramic. Part III. Study on the stain resistance. J Korean Acad Prosthodont 1999:37:776-780
  42. Kim SD, Oh SC. A study on the wear and microstructure of reused IPS Empress ceramic. J Wonkwang Institute Dent Res 1998:8:21-36
  43. Park EE. Oh SC. Biaxial flexure strength of reused IPS Empress Cosmo ceramic. J Wonkwang Institute Dent Res 2000:10:83-90
  44. Seghi RR. Denry I. Brajevic F. Effects of ion exchange on hardness and fracture toughness of dental ceramics. Int J Prosthodont 1992:5: 309-314
  45. Anstis GR. Chantikul P. Lawn BR. Marshall DB. A critical evaluation of indentation techniques for measuring fracture toughness: I. Direct crack measurements. J Am Oeram Soc 1981:64:533-538
  46. Chantikul P. Anstis GR, Lawn BR. Marshall DB. A critical critical evaluation of indentation techniques for measuring fraeture toughness: II. Strength method. J Am Ceram Soc 1981:64:539-543
  47. Morena R. Lockwood PE Fairhurst CW. Fracture toughness of commercial dental porcelain. Dent Mater 1986:2:58-62
  48. Jones DW. Rizalla AS. King HW. Sutow EJ. Fracture toughness and dynamic midulus of titrasilicic-mica glassceramic. J Can Ceram Soc 1988 :57: 39-46
  49. Gorman CM, McDevitt WE. Hill RG. Comparison of two heat-pressed all-ceramic dental materials. Dental materials 2000:16:389-395