This determination is further complicated by the varying appearance of different histologic sections of the same developing tooth, which can appear to be different stages.

By pathology standards, the lesion in histologic section must exceed 2 cm to meet the definition of PMF.

This is a gross histologic section through the superficial epidermis.

The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth.

Gnarled enamel is a description of enamel seen in histologic sections of a tooth underneath a cusp.

Silver staining is the use of silver to stain histologic sections.

The neonatal line is a particular band of incremental growth lines seen in histologic sections of a deciduous tooth.

Rod sheath is an area identified in histologic sections of a tooth.

The enamel organ, also known as dental organ, is a cellular aggregation seen in histologic sections of a developing tooth.

The dental papilla is a condensation of ectomesenchymal cells called odontoblasts, seen in histologic sections of a developing tooth.