Influence of experimental staining on the color stability of indirect computer-aided design/computer-aided manufacturing dental provisional materials

Abstract

Objective:This study presents a comparative analysis of the color stability of computer-aided design/computer-aided manufacturing (CAD/CAM)-fabricated provisional restorations with those of conventional restorations.Materials and Methods:Three different provisional restorative materials (Systemp C&B, 3M Protemp 4, and Telio CAD) were inspected for their color stability using four solutions (Pepsi, coffee, tea, and distilled water). All samples used were fabricated using A1 shade by following the manufacturer's instructions. Color assessment was performed using CIELAB system and a colorimeter. After baseline color measurement, color assessments were done weekly after immersion in specified solutions. Triplicate readings were taken for every sample and the mean value of the color coordinates (L*), (a*), and (b*) were recorded at baseline, week 1, week 2, week 3, and week 4. The data within different groups were compared statistically using analysis of variance (α = 0.05).Results:Overall, the highest color stability was found in CAD/CAM material, followed by Protemp and SystempC&B. It was also observed that the maximum color variation was observed in case of coffee, followed by tea and Pepsi.Conclusions:CAD/CAM provisional material (Telio CAD) showed better color stability compared to conventional materials (Protemp 3M ESPE and SystempC&B Ivoclar Vivadent). CAD/CAM provisional materials are recommended for long-term temporization procedures. This is attributed to the prepolymerization, higher monomer conversion, and minimal preparation errors in CAD/CAM materials.

Technical Accuracy of Dental Laboratories in the Quality and Shade Matching of Porcelain Fused to Metal Crowns: An In Vitro Study

“…Therefore, a clear prescription from the clinician can prevent unnecessary remakes, delays, and/or pre-insertion adjustments [ 6 ]. Although it is possible to reproduce the natural characteristics of dental tissue with dental porcelain, esthetic excellence, particularly the color matching of a porcelain restoration to natural dentition or existing restoration, is a challenging task [ 7 , 8 ].…”

In Vitro Evaluation of Physical and Mechanical Properties of Light-Curing Resin Cement: A Comparative Study

“…The growth of aesthetic procedures in restorative dentistry has increased the use of ceramic materials for different clinical situations. 1,2 Establishing a durable bond between tooth tissue, resin cement, and the ceramic substrate is critical to the clinical success and longevity of indirect restorations. 3 An important aspect to consider is that the resin cement film around the margins of the restorations is often located close to the free gingival margin or gingival sulcus, [4][5][6] a susceptible area of sorption, hydrolysis, and dynamic fatigue which may lead to polymer degradation.…”

“…6,15 Therefore, this study aimed to assess the surface hardness, sorption, solubility, and color stability of light-cured resin cement. The null hypotheses tested were: (1) no difference in microhardness between the evaluated resin cement, (2) no difference in the sorption and solubility between the resin cements tested, and (3) no difference in color stability would be observed between the tested materials.…”

The utilization of snap‐on provisionals for dental veneers: From an analog to a digital approach

“…Milled PMMA has better physical and optical properties than conventional PMMA resin and can be used for the provisionalization of any type of indirect restoration. [23][24][25][26] Provisionals can now become a true prototype of the final restorations. Another advantage of milled PMMA provisionals is digital file storage, this can allow the fabrication of a new interim restoration in case it is needed.…”

“…PMMA is among the many readily available materials for milling. Milled PMMA has better physical and optical properties than conventional PMMA resin and can be used for the provisionalization of any type of indirect restoration . Provisionals can now become a true prototype of the final restorations.…”