SUMMARY This article describes an indirect composite restoration technique for diastema closure and tooth lengthening with a noninvasive approach using regularly available materials such as silicone, composite resin, and an adhesive system. The procedure resulted in occlusal and functional improvement, with diastema closure, protrusive guide adjustment, and an increase in central incisor length. The procedure provided an adequate proportion of the central incisors with an esthetically natural appearance. It also resulted in simple, fast, and accurate manufacturing with a noninvasive esthetic indirect rehabilitation compared with more invasive preparation of ceramic veneers.
SUMMARY This study investigated the stability of the optical properties of high-translucent shades of dental resin-based composites. Four commercial materials (Filtek Z350 XT, Opallis, Amelogen Plus, and IPS Empress Direct) and 14 non-Vita shades were tested. Disc-shaped specimens for each resin-based composite-shade combination (n=6) were evaluated at T 0 (baseline), T 1 (after 30 days of storage in water), and T 2 (after 30 days of storage each in water and a coffee solution). Color measurements were performed according to the L′C′h′ color system. Translucency Parameter ( TP ) and CIEDE2000 color difference (Δ E 00 ) were calculated. Data were statistically analyzed at α = 0.05. Baseline TP values varied from 43 ± 1 to 55 ± 1. Changes in TP at T 1 varied from −3.0% (Opallis T-Neutral) to 4.2% (Amelogen Plus Trans Orange), with no major differences from T 0 . At T 2 , most resin-based composites showed significantly increased opacity, with changes varying between −15.0% (Empress Direct Trans 20) and −2.7% (Z350 XT Blue). However, the TP values were ≥40 throughout the study. Storage in water caused negligible color differences, with Δ E 00 values at T 1 ≤ 0.9 ± 0.6. At T 2 , all materials tested showed significant color difference, and Δ E 00 ≥ 3.2 ± 0.2. The orange shades from Opallis and Amelogen Plus showed lower color variation than did the other shades. The most significant optical changes upon storage were detected in the hue and particularly the chroma color coordinate. In conclusion, the high-translucent resin-based composites showed large variability in the stability of their optical properties among the tested brands and different shades of the same material. Regardless of the storage condition, the tested resin-based composites retained their high-translucency character over time.
SUMMARY Objective: The esthetics of the smile are related to the color, shape, texture, dental alignment, gingival contour, and the relationship of these with the face. Purpose: To present a two-year follow-up for an esthetic rehabilitation clinical case in which the method of digital smile design (DSD) was used to assist and improve diagnosis, communication, and predictability of treatment through an esthetic analysis of the assembly: face, smile, periodontal tissue, and teeth. Clinical Procedure: The smile's esthetics were improved through gingival recontouring, dental home bleaching, and a restorative procedure with thin porcelain laminate veneers using lithium disilicate glass-ceramic (e.max Ceram, Ivoclar-Vivadent) laminates on teeth 4 through 13. Discussion: The proposed technique had an acceptable clinical performance at the end of a two-year follow-up. Significance: DSD can be used to increase professional/patient communication and to provide greater predictability for the smile's esthetic rehabilitation.