05 September 2022

---

Effect of UV aging in esthetic CAD-CAM materials: in vitro study data

Lara Figini

---

Increased demand for esthetics of patients and dental professionals has led to generate a large variety of esthetic materials. For clinically successful esthetic restorations, it is essential to combine a proper translucency with an accurate color matching, so a natural appearance can be provided. As materials are exposed to a range of conditions, including UV light, temperature changes, and continuous humidity, aging process simulates the clinical parameters as closely as possible. 

Materials and methods
In an in vitro study, published on Journal of Esthetic Restorative Dentistry March 2019, the authors analyzed the translucency values of different types of CAD-CAM ceramic materials after  UV aging to assess whether "UV aging" may influence the translucency of these materials over time. 70 specimens (n = 10) of Bruxzir Anterior (BA); E.max Cad (EC); Lava Ultimate (LU); Cerasmart (CE); Vita Enamic (VE); Vita Suprinity (VS); Vita Mark II (VM) were prepared (1 mm ± 0.01 mm). Color measurements were performed using a spectrophotometer (VITA Easyshade). RTP values of the specimens before (RTP1) and after UV aging (RTP2) were evaluated. Statistical analyses were done with repeated measurements of two-way-ANOVA with Bonferroni test (P < 0.05).