Looked like it had been scratched with glass and burned by acid.

Treatments to replace minerals lost from teeth by acids in the mouth.

They are also highly resistant to attack by acids.

Its susceptibility to attack by acids decreases at lower water content.

The drug's molecule must be unaffected by acid in the stomach.

To slow the destruction by sulfuric acid, different methods have been tried.

Where the drop touched, the glass etched as if burned by acid.

The gas is then washed with water and dried by sulfuric acid.

Oysters planted here died within a week or two, their shells etched by acids.

A cavity forms when the damage caused by acids is more than the tooth can repair.