Calcium hydroxide cavity liners: A study of the optical density using a digital system

• Main Author: Bissoli, Cleber Frigi
• Publication Date: 2008
• Other Authors: Santos, Luis Roque de Araújo, Takeshita, Wilton Mitsunari, Castilho, Julio Cezar de Melo, Medici-Filho, Edmundo, de Moraes, Mari Eli Leonelli
• Format: Article
• Language: eng
• Source: Revista odonto ciência (Online)
• Download full: https://revistaseletronicas.pucrs.br/ojs/index.php/fo/article/view/2350
• topic: Optical density; calcium hydroxide cavity liners; digital radiography; Optical density

Purpose: To measure the optical density of the calcium hydroxide cavity liners Biocal (Biodynamics), Dycal (Dentsply), and Life (Kerr), and to compare them with the dentin optical density. Methods: Specimens were made with 1, 2, and 3mm- thickness and x-rayed using the Gendex 765 DC (Dentsply) equipment. The images were captured by using a direct digital system (Visualix, Gendex/Dentsply). Optical density was measured in gray tones using the software Image Tool for Windows 1.28. Data were analyzed by ANOVA and Tukey’s test (5% level of significance). Results: Life cement had the highest value (238.66 gray tones for 3 mm-thick) and Biocal cement showed the lowest value (78.66 gray tones for 1 mm-thick). In dentin the mean values were 48.67 grey tones for 1 mm-thick, 64.27 for 2 mm-thick, and 86.93 for 3 mmthick. Conclusion: All tested calcium hydroxide cavity liners showed higher optical density than dentin. Key words: Optical density; calcium hydroxide cavity liners; digital radiography