Abstract
The interest in aesthetics of dental materials is becoming greater with time and dental ceramics have proven excellent aesthetic properties. The study investigated how does the oral environment and the different surface finishing affect the optical properties and roughness of two types of ceramic, obtained using the heat- pressed method. Results showed that immersion has some influence on the optical and roughness of the two types of ceramics, but the major influence is made by the surface finishing and the type of ceramic. Lithium disilicate ceramic proved to have better optical properties compared to feldspathic ceramic. Roughness values showed that the parameters(Ra and Rz) were influenced by the surface finishing for both type of ceramics.
Highlights
The interest in aesthetics of dental materials is becoming greater with time and dental ceramics have proven excellent aesthetic properties
The aim of this paper is to investigate how does the oral environment and the different surface finishing affect the optical properties of a lithium disilicate and a feldspathic ceramic
The results of this study showed that the immersion has some influence on the optical and roughness of the two types of ceramics, but the major influence is made by the surface finishing and the type of ceramic
Summary
The interest in aesthetics of dental materials is becoming greater with time and dental ceramics have proven excellent aesthetic properties. The study investigated how does the oral environment and the different surface finishing affect the optical properties and roughness of two types of ceramic, obtained using the heat- pressed method. Roughness values showed that the parameters(Ra and Rz) were influenced by the surface finishing for both type of ceramics. The optical behaviour of the ceramic materials is often influenced in the mouth by the value of the pH found. In vitro studies have shown that the ceramic materials are susceptible to corrosion in the range of oral fluid pH [13]. Polishing and glazing are applied to finalize surface texture of the ceramic material, reduce roughness and enhance light transmission influencing the optical properties
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