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Primary Epithelial Band
The earliest event in the origin of each dental organ from the oral epithelium (A), is a thickening of the epithelium as is seen in this image. This proliferation of oral epithelium forms the primary epithelial band (B). This band arises in the lateral region of both maxillary and mandibular processes at about six weeks in utero. The band soon becomes continuous across the middle line of the developing arches and progresses posteriorly to form a horseshoe-shaped thickening in each process.
Legend
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A - oral epithelium |
B - primary epithelial band |
