The term 'Dentist's Instruction' can be broken down into four separate words: RINSE, FLOSS, BITE, and OPEN. RINSE is a five letter word meaning to cleanse with water or another liquid. FLOSS is also a five letter word meaning to clean between the teeth with a special thread. BITE is a four letter word meaning to take hold of something firmly with the teeth. Finally, OPEN is a four letter word meaning to make or set something free from confinement or obstruction. All of these words together form instructions that a dentist might give to their patient in order to maintain good oral hygiene.