DOI QR코드

DOI QR Code

캐드캠 세라믹의 코어와 베니어의 서로 다른 두께가 반투명도에 미치는 영향

Effect of translucency on CAD/CAM ceramic according to different core/veneer thickness

  • 강월 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공전공)
  • Kang, Wol (Department of Dental Laboratory Science and Engineering, College of Health Science, Korea University) ;
  • Kim, Ji-Hwan (Department of Dental Laboratory Science and Engineering, College of Health Science, Korea University)
  • 투고 : 2018.09.06
  • 심사 : 2018.11.19
  • 발행 : 2018.12.30

초록

Objectives: The purpose of this study was to evaluation the effect of translucency on CAD/CAM ceramic according to different core/veneer thicknesses. Methods: A total of 42 samples from 2 groups of 7 ceramic cores, each with 3 thickness values (0.8, 1.0, 1.2 mm) were manufactured. The veneers were also manufactured in 3 thicknesses (0.3, 0.5, 0.7 mm). The group names were based on the name of the ceramic core (IPS e.Max CAD; LD, and IPS Empress CAD; LR). The associated number was determined by the combined thickness of the core and veneer: 1 = (0.8 + 0.7); 2 = (1.0 + 0.5); 3 = (1.2 + 0.3). The translucency was measured using a spectrophotometer and defined via the contrast ratio (CR) and translucency parameter (TP). Two-way ANOVA was performed to compare the 2 groups (material and thickness). Results: As the core thickness increased, the TP value also increased, and the CR value (for LR group) decreased. The results of 2-way ANOVA demonstrated that the thicknesses of different core/veneer combinations significantly affected the translucency (p<0.05). Conclusions: The different core and veneer thicknesses affected the translucency of CAD/CAM ceramic.

키워드

참고문헌

  1. Wee AG, Monaghan P, Johnston WM. Variation in color between intended matched shade and fabricated shade of dental porcelain. J Prosthet Dent 2002;87(6):657-66. https://doi.org/10.1067/mpr.2002.125727
  2. Nakamura T, Satio O, Fuyikawa J, Ishigaki S. Influence of abutment substrate and seramic thickness on the colour of heat-pressed cereamic crowns. J Oral Rehabil 2002;29:805-9. https://doi.org/10.1046/j.1365-2842.2002.00919.x
  3. Vichi A, Ferrari M, Davidson CL. Influence of ceramic and cement thickness on the masking of various types of opaque posts. J Prosthet Dent 2000;83:412-7. https://doi.org/10.1016/S0022-3913(00)70035-7
  4. Raptis NV, Michalakis KX, Hirayama H. Optical behavior of current ceramic systems. Int J Periodontics Restorative Dent 2006;26:31-41.
  5. Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics. 5th ed. St. Louis: Mosby; 2016: 264-5.
  6. Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/CAM: current status and future perspectives from 20 years of experience. Dental Mater 2009;28:44-56. https://doi.org/10.4012/dmj.28.44
  7. Guarda GB, Correr AB, Gonçalves LS, Costa AR, Borges GA, Sinhoreti MA, et al. Effects of surface treatments, thermocycling, and cyclic loading on the bond strength of a resin cement bonded to a lithium disilicate glass ceramic. Oper Dent 2013;38:208-17. https://doi.org/10.2341/11-076-L
  8. Dozic A, Kleverlaan CJ, Meegdes M, van der Zel J, Feilzer AJ. The influence of porcelain layer thickness on the final shade of ceramic restorations. J Prosthet Dent 2003;90(6):563-70. https://doi.org/10.1016/S0022-3913(03)00517-1
  9. Davins SP, Myslinski NR. Shade selection by color vision-defective dental personnel. J prosthet Dent 1990;63:97-101. https://doi.org/10.1016/0022-3913(90)90276-I
  10. Turgut S, Bagis B, Turkaslan SS, Bagis YH. Effect of ultraviolet aging on translucency of resin-cemented ceramic veneers: An in vitro study. J Prosthodont 2014;23:39-44. https://doi.org/10.1111/jopr.12061
  11. Wyszecki G, Stiles WS. Color science: concepts and methods, quantitative data and formula. New York: Wiley; 1982: 567-9. https://doi.org/10.1080/713818072
  12. Wang F, Takahashi H, Iwasaki N. Translucency of dental ceramics with different thicknesses. J Prosthet Dent 2013;110:14-20. https://doi.org/10.1016/S0022-3913(13)60333-9
  13. Yu B, Ahn JS, Lee YK. Measurement of translucency of tooth enamel and dentin. Acta Odontol Scand 2009;67:57-64. https://doi.org/10.1080/00016350802577818
  14. Spink LS, Rungruanganut P, Megremis S, Kelly JR. Comparison of an absolute and surrogate measure of relative translucency in dental ceramics. Dent Mater 2013;29:70-7. https://doi.org/10.1016/j.dental.2013.03.021
  15. Bayindir F, Kuo S, Johnston WM, Wee AG. Coverage error of three conceptually different shade guide systems to vital unrestored dentition. J Prosthet Dent 2007;98:175-85. https://doi.org/10.1016/S0022-3913(07)60053-5
  16. Oguro R, Nakajima M, Seki N, Sadr A, Tagami J, Sumi Y. The role of enamel thickness and refractive index on human tooth colour. J Dent 2016;51:36-44. https://doi.org/10.1016/j.jdent.2016.05.010
  17. Ten Bosch JJ, Coops JC. Tooth color and reflectance as related to light scattering and enamel hardness. J Dent Res 1995;74:374-80. https://doi.org/10.1177/00220345950740011401
  18. Stroud JL, Buschang PH, Giaz PW. Sexual dimorphism in mesiodistal dentin and enamel thickness. Dentomaxillofac Radiol 1994;233:169-71. https://doi.org/10.1259/dmfr.23.3.7835519
  19. Holloway JA, Miller RB. The effect of core translucency on the aesthetics of all-ceramic restorations. Pract Periodontics Aesthet Dent 1997;9:567-74.
  20. Kelly JR, Nishimura I, Campbell SD. Ceramics in dentistry: historical roots and current perspectives. J Prosthet Dent 1996;75(1):18-32. https://doi.org/10.1016/S0022-3913(96)90413-8
  21. Heffernan MJ, Aquilino SA, Diaz-Arnold AM, Haselton DR, Stanford CM, Vargas MA. Relative translucency of six all-ceramic systems. Part II: core and veneer materials. J Prosthet Dent 2002;98:10-15. https://doi.org/10.1016/S0022-3913(02)00041-0
  22. Antonson SA, Anusavice KJ. Contrast ratio of veneering and core ceramics as a function of thickness. Int J Prosthodont 2001;14(4):316-20.
  23. Johnston WM, Ma T, Kienle BH. Translucency parameter of colorants for maxillofacial prostheses. Int J Prosthodont 1995;8(1):79-86.
  24. Zhang Y, Griggs JA, Benham AW. Influence of powder/liquid mixing ratio on porosity and translucency of dental porcelains. Prosthet Dent 2004;91(2):128-35. https://doi.org/10.1016/j.prosdent.2003.10.014
  25. O'Brien WJ, Groh CL, Boenke KM. A new, small-color-difference equation for dental shades. J Dent Res 1990;69:1762-4. https://doi.org/10.1177/00220345900690111001
  26. Jin HJ. A comparative study on the translucency of various all-ceramic crown materials[Doctoral dissertation]. Seoul: Univ. of Korea, 2006.
  27. Baltzer A, Kaufmann-Jinoian V. Shading of ceramic crowns using digital tooth shade matching devices. Int J Comput Dent 2005;8(2):129-52.
  28. Bolt RA, Bosch JJ, Coops JC. Influence of window size in small-window colour measurement, particularly of teeth. Phys Med Biol 1994;39:1133-42. https://doi.org/10.1088/0031-9155/39/7/006
  29. Ragain Jr. JC, Johnston WM. Accuracy of Kubelka-Munk reflectance theory applied to human dentin and enamel. J Dent Res 2001;80:449-52. https://doi.org/10.1177/00220345010800020901
  30. Kursoglu P, Motro PFK, Kazazoglu E. Translucency of ceramic material in different core-veneer combinations. J Prosthet Dent 2015;113(1):48-53. https://doi.org/10.1016/j.prosdent.2014.07.011
  31. Della Bona A, Nogueira AD, Pecho OE. Optical properties of CAD-CAM ceramic systems. Journal of dentistry 2014;42(9):1202-9. https://doi.org/10.1016/j.jdent.2014.07.005
  32. Ilie N, Hickel R. Correlation between ceramics translucency and polymerization efficiency through ceramics. Dental Mater 2008;24:908-14. https://doi.org/10.1016/j.dental.2007.11.006
  33. Nogueira AD, Della Bona A. The effect of a coupling medium on color and translucency of CAD-CAM ceramics. J Dent 2013;41:e18-e23. https://doi.org/10.1016/j.jdent.2013.02.005