Radiopacity of impression materials using an indirect digital system

Eduardo Gonçalves Mota, Maria Ivete Bolzan Rockenbach, Nilza Pereira da Costa, Angela Rigo, Carla Renata Radaelli Coelho

Abstract


Purpose: This in vitro study evaluated the radiopacity of impression materials using an indirect digital system.
Methods: Samples of four polyvinyl siloxanes, one polyether, one polysulfide, and one irreversible hydrocolloid were fabricated with 1.0, 1.5, and 3.5mm-thickness. Three samples of different thickness were placed on the Digora optical plate and exposed. The optical density (pixels) was recorded in three areas resulting in a total of 360 measurements. Data were analyzed by 2-way ANOVA and Tukey tests (α=0.05).
Results: Significant differences were observed among all materials and thicknesses tested (P<0.001). Irreversible hydrocolloid and polyether showed the lowest optical density. Polysulfide showed the highest optical density under all evaluated conditions.
Conclusion: There was a significant difference in optical density for all impression materials tested. Composition changes are suggested to allow radiographic detection and improve safety during clinical use of impression materials.
Key words: Optical density; digital dental radiography; dental impression materials

Keywords


Optical density; digital dental radiography; dental impression materials

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e-ISSN: 1980-6523

ISSN-L: 0102-9460

 

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