lip (redirected from Lip diseases)

lip (lip)

1. the upper or lower fleshy margin of the mouth.

2. any liplike part; labium.

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cleft lip  a congenital cleft or defect in the upper lip.

glenoid lip  a ring of fibrocartilage joined to the rim of the glenoid cavity.

Hapsburg lip  a thick, overdeveloped lower lip that often accompanies Hapsburg jaw.

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lip (lp)

n.

1. Either of two fleshy folds that surround the opening of the mouth.

2. A liplike structure bounding or encircling a bodily cavity or groove.

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lip,

n 1. either the upper or lower structure surrounding the opening of the oral cavity.
2. a rimlike structure bordering a cavity or groove.

lip biting,

n an oral habit in which either lip is placed between the teeth with more or less forcible application of the teeth to the lips.

lip, cleft,

n See harelip.

lip, congenital cleft,

n See harelip.

lip, double,

n a redundant fold of tissue on the mucosal side of the upper lip that gives the appearance of a second lip and that may become accentuated by habitually being sucked between the teeth.

lip line, high,

n the greatest height to which the lip is raised in normal function or during the act of smiling broadly.

lip line, low,

n the lowest position of the lower lip during the act of smiling or voluntary retraction. The lowest position of the upper lip at rest.

lip pits (congenital lip fistulas),

n.pl the congenital depressions, usually bilateral and symmetrically placed, on the vermilion portion of the lower lip. These pits may be circular or may be present as a transverse slit. The depression represents a blind fistula that penetrates downward into the lower lip to a depth of 0.5 to 2.5 cm. They often exude viscid saliva on pressure.

lip retractor,

n a device to retract the lips when taking intraoral photographs.

lip, structures of,

n.pl See vermilion border; vestibule, labial; frenum, labial.

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lip

1. the upper or lower fleshy margin of the mouth.

2. any fleshy boundary; labium.

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lip droop

an unnatural hanging of the lower lip, which is not used during prehension and mastication; there is an accompanying lack of sensitivity of the part. Unilateral droop is usually an indication of facial paralysis; bilateral droop occurs in many conditions of general paralysis, e.g. botulism.

lip fold dermatitis

see fold dermatitis.

lip-leg ulceration

a disease of sheep. See ulcerative dermatosis.

lip philtrum

the vertical median groove or fissure in the upper lip of some mammals.

lip twitch

see twitch.

lip ulcer

see eosinophilic ulcer.