This study aimed to evaluate color stability of a new machinable provisional prosthetic material in comparison with two commonly used provisional prosthetic materials after immersion in various beverage solutions. The materials that used in this study are three different types of provisional restorative materials: 1-machinable acrylic blocks for provisional prosthetic restoration. (CAD-Temp) 2- paste to paste provisional prosthetic material . (Protemp 4) 3- conventional powder and liquid provisional prosthetic material. (Jet) A total of 75 disc-shaped samples was constructed in this study. For construction of disc-shape samples of all tested materials Specially designed mold was constructed for standardization of samples dimension. For CAD/CAM provisional material, patterns was constructed using specially designed mold , then samples was fabricated using CAD/CAM machine. whereas for the other two tested materials, samples was constructed by direct condensation of the material inside the mold . The samples was divided into three main groups according to the type of provisional material tested . 25 disc - shaped samples of each group . The samples was subdivided into 5 subgroups according to the solution in which they will be immersed into: Subgroup I : Distilled water (5 samples) Subgroup II: Coffee (5 samples ) Subgroup III : Tea (5 samples) Subgroup IV: Cola (5 samples) Subgroup V: Juice (5 samples) Samples was evaluated for color stability using spectrophotometer . At 1 day , 1week ,and 2weeks period. All data was tabulated and statistically analyzed. Within the limitation of the present study the following conclusions can be drawn: 1- Color stability (ΔE) was dependent on type of provisional esthetic restorative materials, type of solution and time of immersion. 2- Conventional powder and liquid provisional restorative material (Jet)showed the highest color stability (ΔE) 3- The least color stability (ΔE) was found with protemp 4with tea after 2 weeks.