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  • Title: An audit of shade reproduction of fixed metal ceramic prostheses.
    Author: Finch K, Jarad FD, Adeyemi AA, Al-Shamaa S.
    Journal: Eur J Prosthodont Restor Dent; 2011 Sep; 19(3):94-8. PubMed ID: 22645789.
    Abstract:
    This investigation aimed to evaluate the colour difference between metal ceramic restorations and their corresponding shades and any reasons for a colour mismatch in the dental laboratory. The colour of 50 consecutive metal ceramic restorations produced in a laboratory was measured using a spectrophotometer and compared to the shade tabs. Colour reproduction was optimal at porcelain thicknesses between 1.4-1.6 mm, varied between technicians within the same laboratory and was better for shades in the 2M group. Most crowns were above the threshold for a clinically acceptable shade match and almost all crowns were lighter than the corresponding shade tab.
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