To evaluate the variation in shade by a spectrophotometer of porcelain fused to metal samples with respect to repeated firing and variation in lot of ceramic – An in-vitro study

Barghi, 1977, Porcelain shade stability after repeated firing, J Prosthet Dent, 37, 173, 10.1016/0022-3913(77)90239-6 Obregon, 1981, Effects of opaque and porcelain surface texture on the color of ceramometals restorations, J Prosthet Dent, 46, 330, 10.1016/0022-3913(81)90222-5 Groh, 1992, Differences in color between fired porcelain and shade guides, Int J Prosthodont, 5, 510 Jorgenson, 1979, Spectrophotometric study of five porcelain shades relative to the dimensions of color, porcelain thickness, and repeated firings, J Prosthet Dent, 42, 96, 10.1016/0022-3913(79)90335-4 Sorensen, 1987, Improved color matching of metal ceramic restorations. Part II: Procedures for visual communication, J Prosthet Dent, 58, 669, 10.1016/0022-3913(87)90417-3 Barghi, 1982, Optimum thickness of opaque and body porcelain, J Prosthet Dent, 48, 429, 10.1016/0022-3913(82)90080-4 Barghi, 1985, Effects of batch variation on shade of dental porcelain, J Prosthet Dent, 54, 625, 10.1016/0022-3913(85)90235-5 Evans, 1990, The influence of condensation method on porosity and shade of body porcelain, J Prosthet Dent, 63, 380, 10.1016/0022-3913(90)90224-Z Crispin, 1991, Effect of different metal ceramic alloys on the color of opaque and dentin porcelain, J Prosthet Dent, 65, 351, 10.1016/0022-3913(91)90224-K Mulla, 1991, Effects of temperature on color stability of porcelain stains, J Prosthet Dent, 65, 507, 10.1016/0022-3913(91)90290-D Douglas, 1998, Acceptability of shade differences in metal ceramic crowns, J Prosthet Dent, 79, 254, 10.1016/S0022-3913(98)70233-1 Okubo, 1998, Evaluation of visual and instrumental shade matching, J Prosthet Dent, 80, 642, 10.1016/S0022-3913(98)70049-6 Baker, 1960, Condensation of dental porcelain, J Prosthet Dent, 10, 1094, 10.1016/0022-3913(60)90220-1 Herzberg, 1972, Effect of metal surface treatment on the masking power of opaque porcelain, J Dent Res, 51, 468, 10.1177/00220345720510023701 Barghi, 1978, A study of various factors influencing shade of bonded porcelain, J Prosthet Dent, 39, 282, 10.1016/S0022-3913(78)80096-1 Schwabacher, 1990, Three dimensional color coordinates of natural teeth compared with three shade guides, J Prosthet Dent, 64, 425, 10.1016/0022-3913(90)90038-E O'Brien, 1990, A new, small-color-difference equation for dental shades, J Dent Res, 69, 1762, 10.1177/00220345900690111001 Sproull, 1973, Color matching in dentistry. Part II. Practical applications of the organization of color, J Prosthet Dent, 29, 556, 10.1016/0022-3913(73)90036-X Sproull, 1974, Color matching in dentistry. Part III Color control practical applications of the organization of color, J Prosthet Dent, 31, 556, 10.1016/0022-3913(74)90049-3 Sproull, 1973, Color matching in dentistry. Part I. the three-dimensional nature of color, J Prosthet Dent, 29, 416, 10.1016/S0022-3913(73)80019-8