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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.
Teeth are prone to decay known as cavities. A filling is typically a two-part process (usually done in one office visit) in which the dentist removes the decay then fills the remaining tooth with a protective material. Dentists' fees are based on the type of filling material used and the number of surfaces needing a filling in a single tooth.