ankyloglossia – Abnormal shortness of the frenulum of the tongue, resulting in limitation of its motion; also called tongue-tie.

attrition – A type of tooth wear caused by tooth-to-tooth contact.

bolus – A small rounded mass of a substance, especially of chewed food at the moment of swallowing.

bruxism – The involuntary or habitual grinding of the teeth, typically during sleep.

electromyography – The recording of the electrical activity of muscle tissue, or its representation as a visual display or audible signal, using electrodes attached to the skin or inserted into the muscle.

cinefluorography – The process of making motion pictures of images of objects by means of X-rays with the aid of a fluorescent screen (as for revealing the motions of organs in the body).

comorbidity – The simultaneous presence of two chronic diseases or conditions in a patient.

deglutition – The action or process of swallowing.

dysphagia – Difficulty or discomfort in swallowing, as a symptom of disease.

desensitization – To make less sensitive; reduce sensitivity.

extrinsic – A muscle that originates in another part of the body than that of its insertion.

insertion – The part of the muscle that moves with contraction.

intrinsic – One whose origin and insertion are both in the same part or organ.

non-nutritive sucking – Sucking not relating to or providing nutrition.

origin – Fixed end or attachment of a muscle.

perioral – Of, relating to, occurring in, or being the tissues around the mouth.

polypharmacy – The simultaneous use of multiple drugs to treat a single ailment or condition.