The crystals in the enamel rod groups bend sinusoidally to the right or left at a slightly different angle than do adjacent groups,which is shown in the:

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The crystals in the enamel rod groups bend sinusoidally to the right or left at a slightly different angle than do adjacent groups,increasing enamel's strength,as shown in the Hunter-Schreger bands.A feature of dentin is Tomes granular layer,which is most often found in the peripheral part of dentin beneath the root's cementum,adjacent to the dentinocemental junction in a stained section of dentin.The lines of Retzius are the incremental lines that appear brown in a stained section of mature enamel.The imbrication lines of von Ebner are incremental lines or bands that stain darkly in a section of dentin.

The Crystals in the Enamel Rod Groups Bend Sinusoidally to the Right