Erosion is the chemical process of tooth substance loss without bacterial involvement. It occurs when tooth surfaces are exposed to acids from intrinsic sources like gastric reflux or vomiting, or extrinsic sources like acidic foods and beverages. Clinical features include smooth lesions on the front teeth surfaces that cause hypersensitivity. Radiographs may show radiolucent defects in the crown. Management involves diet control, fluoride use, changing brushing habits, and restorations or systemic treatment depending on the cause of erosion.

1. Erosion

2. General information
Loss of tooth substance by chemical process
that does not involve known bacterial action
Dissolution of mineralised tooth structure
occurs due to contact with acids
erosion is a chemical process in which tooth
surface is removed in the absence of plaque

3. Types
Intrinsic – erosion that occurs due to
intrinsic causes example gastro-
oesophageal reflux, vomiting
extrinsic – erosion occurring from
extrinsic sources example acidic
beverages, citrus fruits

4. Aetiology
Local acidosis
chronic vomiting
acidic foods and beverages
anorexia nervosa
occupational
poorly monitored pH swimming pool
medications

5. Clinical features
Occurs most
frequently on labial
and buccal surfaces
of teeth smooth
lesion which exhibits
no chalkiness
causes
hypersensitivity of
teeth and may also
trigger secondary
dentin formation
there may be pink
spot on tooth which
is attributable to the
reduced thickness of
enamel and dentine
making the pink hue
of pulp visible
erosive lesions cause
cupping in dentine

6. Radiographic features
It appears as
radiolucent defect
in the Crown
margins may be
well defined or
diffused

7. Management
Diet control
fluoride mouthwash
brushing habits change
restoration
systemic management