exfoliation

exfoliation /ex·fo·li·a·tion/ (eks-fo″le-a´shun)

1. a falling off in scales or layers.

2. the removal of scales or flakes from the surface of the skin.

3. the normal loss of primary teeth after loss of their root structure.exfo´liative

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lamellar exfoliation of newborn  a congenital hereditary disorder in which the infant (collodion baby) is born entirely covered with a collodion- or parchment-like membrane that peels off within 24 hours, after which there may be complete healing, or the scales may re-form and the process be repeated; in the more severe form, the infant (harlequin fetus) is entirely covered with thick, horny, armor-like scales, and is usually stillborn or dies soon after birth.

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ex·fo·li·a·tion (ks-fl-shn)

n.

1. Detachment and shedding of superficial cells of an epithelium or a tissue surface.

2. Scaling or desquamation of the horny layer of epidermis.

3. Loss of deciduous teeth following physiological loss of root structure.

4. Extrusion of permanent teeth as a result of disease or loss of opposing teeth.

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ex·foli·ate v.

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exfoliation

[eksfō′lē·ā′shən]

Etymology: L, ex + folium, leaf

peeling and sloughing off of tissue cells. This is a normal process that may be exaggerated in certain skin diseases or after a severe sunburn or may be be done deliberately, such as with microdermabrasion. See also desquamation, exfoliative dermatitis. exfoliative, adj.

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exfoliation [eks-fo″le-a´shun]

1. a falling off in scales or layers.

2. the normal loss of primary teeth after loss of their root structure. adj., adj exfo´liative.

lamellar exfoliation of newborn a congenital hereditary disorder in which the infant is born covered with a collodionlike or parchmentlike membrane that peels off within 24 hours, after which there may be complete healing, or the scales may reform and the process may be repeated. In the more severe form, the infant (harlequin fetus) is covered with thick, horny, armorlike scales and usually either is stillborn or dies shortly after birth. Called also ichthyosis congenita and lamellar ichthyosis of newborn.

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exfoliation (eksfō´lēā´shn),

n the physiologic loss of the primary dentition. Also called shedding.

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exfoliation

a falling off in scales or layers.