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521 Diseases of hard tissues of teeth

521.0 Dental caries

          Caries (of): Infantile melanodontia
           arrested Odontoclasia
           cementum White spot lesions of teeth
           dentine (acute) (chronic)
           enamel (acute) (chronic)
           (incipient)

521.1 Excessive attrition

          Approximal wear Occlusal wear

521.2 Abrasion

          Abrasion of teeth: Abrasion of teeth:
           dentifrice ritual
           habitual traditional
           occupational Wedge defect NOS of teeth

521.3 Erosion

          Erosion of teeth:
           NOS
           due to:
           medicine
           persistent vomiting
           idiopathic
           occupational

521.4 Pathological resorption

          Internal granuloma of pulp Resorption of teeth (external)

521.5 Hypercementosis

          Cementation hyperplasia

521.6 Ankylosis of teeth

521.7 Posteruptive color changes

          Staining of teeth
          Excludes: accretions [deposits] on teeth (523.6)

521.8 Other diseases of hard tissues of teeth

          Irradiated enamel Sensitive dentine

521.9 Unspecified

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