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dental ledge. 1. a band of ectodermal cells growing from the epithelium of the embryonic jaws into the underlying mesenchyme; local buds from the ledge give rise to the primordia of the enamel organs of the teeth.
1 To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth. 2  To restore an already broken tooth or a tooth that has been severely worn down. 3  To cover and support a tooth with a large filling when there isn't a lot of tooth left.  To hold a dental bridge in place.