40^thWorld Dental Science and Oral Health Congress

Cavity liners are film-forming materials which are applied in a thin layer to seal the dentine and walls of the cavity against influx of bacteria or irritants from restorative procedures. Cavity liners are protection materials placed with minimal thickness which act as cavity sealers and provide beneficial functions, such as fluoride release, adhesion to tooth structure with antibacterial action that promotes the health of the pulp. Several materials have been used as sealers, such as,ionomer cement, resin modified glass ionomer and calcium hydroxide.

 

The newer materials, mineral trioxide and are also used to protect the pulp. Biodentin is a promising material and has the potential of making contributions in the field of dentistry. We have compared and assessed the pH and diffusion of ions from three different when used as a cavity liner in permanent molars. A standard class-I cavity preparation was made in 30 extracted permanent molars with maintaining remaining dentin thickness of 1±0.3 mm tissue. Samples were divided into three equal for three different materials and two teeth as positive controls. Indirect pulp capping was performed in all the teeth by Dycal, light curing calcium hydroxide (Pulpdent) and Biodentin. The leached Ca2+ ions were measured using optical spectrometry and the release of OH– ions using a pH meter. The measurements were performed after 24 hours, 7 days and 28 days in saline solution. Samples were subjected for statistical analysis by using ANOVA test.