Polymer-based restorative materials

Table 4: Shade and color stability for some shades of the materials

If the manufacturer has assigned a shade guide that shade guide is used for comparison if delivered, otherwise Vita-shade guide is used.

Comment: Most of the materials complied with the requirement stating that the color shall match closely to the manufacturer’s shade guide or nominated shade guide. The shades that were considered to not comply are marked with red and the statement “No” in Table 4.
Shades that had more than a slight change in color after immersion in water and with or without exposure to radiation from a Xenon lamp are marked with red and “Yes” in the table and do not comply with the requirement.
Several shades had only a slight change in color, which is acceptable according to the standard. These shades are marked with blue.

The following materials have their own shade guides:
Admira, Amaris, Artemis (for the colors: A2, A3, A3.5, A4, B3), Beautifil, Ceram X duo,
Charisma flow, Clearfil Majesty Posterior PLT, Els extra low shrinkage, Enamel Plus HRi,
Esthet X, Filtek Silorane (not delivered), GC Kalore, Grandio SO (except for A4),
Ice (for the colors: A1, A2, A3, A3.5), IPS Empress Direct, Synergy D6, Venus (not delivered), Venus Diamond.

―     Shade guide not nominated
(A)    The color of the wet specimen has a close match compared with the shade guide
(B)    The wet specimen is evenly pigmented
(C)    Color difference between wet and dry specimen
(D)    Color difference between irradiated and not irradiated parts of the specimen
(E)    Color difference between the irradiated part of the wet specimen compared with a dry specimen
(F)    Color difference between the not irradiated part of the wet specimen compared with a dry specimen

Requirements in ISO 4049:
(A) and (B):                            Yes
(C), (D), (E) and (F):              None or slight