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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.
Since they are sometimes placed on crooked teeth, treatment with veneers has sometimes been referred to as instant orthodontics .. Temporary/provisional: This is a temporary crown that is placed on the tooth while waiting for the final crown to be made by the dental lab.Temporary crowns shouldn't be left on a tooth for very long because they are made of weak materials and cemented with weak cement that doesn't seal the tooth for very long.he part of the tooth that is visible in the mouth, above the gum line on lower teeth and below the gum line on upper teeth, is called the clinical crown. A cemented restoration that partially or completely covers the outside of the clinical crown is referred to as a dental crown or cap.