Abstract
This study aims to evaluate the use of limonene extract (LIM) on the bond strength to cariesaffecteddentin after 24 hours and 6 months of aging. Eighty healthy human molars will beselected and class I cavities (6 mm x 7 mm x 4 mm) will be prepared in their pulp chambers with245 carbide burs at high-speed. Afterward, the teeth will be separated into four groups (n=20)according to different…