Attrition, Erosion and Abrasion of teeth.
A
TTRITION
: Loss of tooth surface due to normal wear. Some wearing is normal
(physiologic) but accelerated wear beyond normal is pathologic.
E
ROSION
: The chemical dissolution of tooth structure often attributed to regurgita-
tion of gastric acid, excessive intake of acidic food or drink, (eg, two liters of
cola/day for years)
Sometimes a cause cannot be identified, it is idiopathic.
A
BRASION
: Wear beyond normal caused by mechanical forces. This sounds like
pathologic attrition but the difference is the pattern of wear. Attrition is ordinarily
confined to the occlusal and incisal surfaces. Abrasion is ordinarily used when the
loss is on a non-occluding surface.
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