perikymata

perikymata
The transverse ridges and grooves on the surface of tooth enamel. [peri- + G. kyma, wave]

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peri·ky·ma·ta -'kī-mət-ə n pl minute transverse ridges on the surface of the enamel of a tooth which correspond to the incremental lines of Retzius

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peri·ky·ma·ta (per″e-kiґmə-tə) pl. of perikyґma [peri- + Gr. kyma wave] the numerous small transverse ridges on the surface of the enamel of permanent teeth, representing overlapping prism groups; continued abrasion erodes the enamel surface and obliterates them.

Medical dictionary. 2011.

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