Determining Shade-matching and Blending Capabilities of a New Universal Dental Composite: An in vivo Study
Abstract
Determining shade-matching and blending capabilities of a new universal dental composite: An in vivo study. Demand for direct esthetic restorations is high and shade matching can be challenging. Newly developed universal composites claim to match all Vita Classical shades with a single product, eliminating the challenges of subjective shade matching. The purpose of this study was to quantify a universal composites shade matching and blending capabilities as an in vivo direct veneer. Consented subjects (n=10) with an unrestored, non-carious left maxillary central incisor were enrolled into the study. Foreach subject, a direct spectrophotometric measurement (CIE L*a*b*) was made of the natural tooth, followed by measurement of the cured universal composite on the tooth. A digital photograph with the composite in place was taken. A colorimeter application was used to obtain L*a*b* values from the photographs at the composites most incisal and cervical edges, as well as immediately adjacent to the composite on natural tooth structure. E00 were determined for the composites ability to match the tooth shade beneath it (Em), and the composites ability to blend with the incisal (Ei) and cervical (Ec) natural tooth shade immediately adjacent. E00 1.8 was set as the acceptability threshold. The means for Em, Ei, and Ec were calculated. An independent t-test was used to compare the differences between Ei and Ec. The mean (standard deviation) E00 values were 6.16 (2.38), 3.90 (2.47), and 6.84 (1.80) for Em, Ei, and Ec, respectively. In comparing the differences in the means using the independent t-test between Ei and Ec, a statistically significant difference was observed (p = 0.008, =0.05). As a direct veneer, the universal composite did not meet the acceptability threshold for any E00 measurements; however, the universal composite was better at matching the incisal third when compared to the other thirds. More in vivo studies are needed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2022
- Accession Number
- AD1186374
Entities
People
- Thuyvi A. Truong
Organizations
- Uniformed Services University of the Health Sciences