People should see a doctor if. 1  A bee sting triggers hives (to obtain advice about treatment if another bee sting occurs). 2  They have other symptoms, such as fever, joint pains, weight loss, swollen lymph nodes, or night sweats. 3  Hives recur without exposure to a trigger. 4  Symptoms last for more than 2 days.
tooth. 1. (in most vertebrates) one of the hard bodies or processes usu. attached in a row to each jaw, serving for the prehension and mastication of food, as weapons of attack or defense, etc., and in mammals typically composed chiefly of dentin surrounding a sensitive pulp and covered on the crown with enamel.
Updated November 24, 2014. Definition: Dentin is a tissue that is calcified and consists of tiny tubules or tubes. It is the second layer of the tooth and is normally covered by enamel and covers the pulp, making up the majority of the tooth's structure. Both denser and harder than bone, the color of dentin may range anywhere from grey to black but is typically a pale yellow.