irregular dentin

dentin /den·tin/ (den´tin) the chief substance of the teeth, surrounding the tooth pulp and covered by enamel on the crown and by cementum on the roots.den´tinal

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adventitious dentin  secondary d.

circumpulpal dentin  the inner portion of dentin, adjacent to the pulp, consisting of thinner fibrils.

cover dentin  the peripheral portion of dentin, adjacent to the enamel or cementum, consisting of coarser fibers than the circumpulpar dentin.

irregular dentin  secondary d.

mantle dentin  cover d.

opalescent dentin  dentin giving an unusual translucent or opalescent appearance to the teeth, as occurs in dentinogenesis imperfecta.

primary dentin  dentin formed before the eruption of a tooth.

secondary dentin  new dentin formed in response to stimuli associated with the normal aging process or with pathological conditions, such as caries or injury, or cavity preparation.

transparent dentin  dentin in which some dentinal tubules have become sclerotic or calcified, producing the appearance of translucency.

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irregular dentin

n.

See tertiary dentin.