Complex sentence: Impactions completely covered by bone and soft tissue have a low rate of clinically significant pathology-generally small cysts or uncommon tumors that form from the residual epithelial remnants around the crowns of the teeth.
Split into simpler sentences: Impactions completely covered by bone and soft tissue have a low rate of clinically significant pathology. Mostly, small cysts or uncommon tumors that form from the residual epithelial remnants around the crowns of the teeth.