small brush; has long handle; used to clean teeth

fully understood or grasped

fully understood or grasped

fully understood or grasped

gastritis caused by ingesting an irritant (as too much aspirin)

an abscess of a common kind in the tissue around a tooth

an abscess of a common kind in the tissue around a tooth

a tool or machine used for wearing down or smoothing or polishing

a tool or machine used for wearing down or smoothing or polishing

a tool or machine used for wearing down or smoothing or polishing