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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.
Calculus: A hard deposit attached to the teeth, usually consisting of mineralized bacterial plaque. Candida: Yeast often found in association with oral disease such as âthrushâ. Caverous resorption: Bone loss leaving hollow spaces. Such resorption may appear on radiographs of teeth with vertical root fractures. Cementoenamel, Junction (CEJ): The area at which the enamel and cementum are united at the cervical region of the tooth. Cementum: A mineralized bone-like tissue that covers the tooth root and blends with the periodontal ligament to hold the tooth in place.