Use of more translucent cement can produce smaller color interference on aesthetic outcome of interim restorations

Bis-acryl composite disks were prepared in 2 thicknesses (1.2 mm, 0.6 mm) and 3 shades (A3.5, A2, bleached) to simulate the restorations. Cementation over dentin disks was performed with 1 translucent cement (Provicol QM Aesthetic; VOCO), 2 conventional cements (Provicol; VOCO, Temp-Bond NE; Kerr Dental), and 1 transparent liquid (polyethylene glycol 400). The difference between the color of the specimens cemented with the transparent liquid and that of the specimens cemented with each cement was calculated (ΔEab). The data were analyzed using 3-way analysis of variance and Tukey tests (5%).

Results

Significant differences were observed for all factors and some interactions (P < .05). For Provicol QM Aesthetic, the shade and thickness did not influence the ΔEab. For Provicol and Temp-Bond NE, the lighter and thinner the specimen, the higher the ΔEab. Only Provicol QM Aesthetic had smaller means than the perceptibility threshold. Temp-Bond NE and Provicol had higher values than the acceptability threshold for some combinations.

The highly translucent cement had less color interference than the conventional materials. The thickness and resin shade only affected the results for the opaque cements. The thinner specimens and the lighter shades had higher color interference. The use of a more translucent cement can produce a smaller color interference on the esthetic outcome of interim restorations.

Reference:

Optical properties, esthetic, temporary, cements, final restoration, color, Sabrina Elise Moecke, Ana Gabriele de Cassia Santos Silva, Alessandra Bühler Borges, Carlos Rocha Gomes Torres.The Journal of the American Dental Association. Published:April 26, 2023DOI:https://doi.org/10.1016/j.adaj.2023.03.010