Effect of Indian Chromatogens on Color Stability of commercially Available Different Tooth Colored Provisional Restorative Materials: An in vitro Study

Abstract

Provisional restorations are an essential component of fixed prosthodontic treatment. They provide the clinicians with valuable diagnostic information, act as a functional and esthetic try-in, and serve as a blueprint for the design of the definitive prosthesis. Physical properties, handling properties, patient acceptance, and material cost should be considered while selecting a material for fabrication of a provisional restoration. Color stability is one of the physical properties that affects the ability of materials to retain their original color. The discoloration of provisional restorations can result in an esthetic problem. This is especially true when more extensive prostheses require provisional restorations for longer interim periods. Discoloration can be affected by several factors including incomplete polymerization,1,2 water sorption,3,4 chemical reactivity,5,6 diet,7-9 oral hygiene,10,11 and surface smoothness of the restoration.12-17 Most materials used for provisional restorations are subject to sorption, a process of absorption and adsorption of liquids depending on environmental conditions.18 Should a contacting solution be pigmented, discoloration is possible. The Indian food consists of various components that are chromatogens, such as tea, coffee, colas, turmeric powder, red chilly powder, spices that are cooked in oil, etc. and are consumed on a daily basis and can adversely affect the color of the provisional restorative material. The consumption of tobacco has also increased alarmingly. With high intake of such chromatogens, the color stability of provisional restoration may become questionable. A number of studies have looked at the color stability of provisional restorative materials in various chromatogens (coffee, tea, colas, cherry juice, mouthrinses, etc.).8-19 However, the effect of commonly consumed chromatogens by the Indian population on provisional restorative materials still remains unknown. 1Assistant Professor, 2Dean and Head 1Department of Prosthodontics, Bharati Vidyapeeth Deemed University Dental College and Hospital, Navi Mumbai Maharashtra, India 2Department of Prosthodontics, VSPM Dental College and Hospital, Nagpur, Maharashtra, India