cement

(se-ment’) [L. cemen’tum]. 1. Any substance that serves to mend something which is broken. 2. The layer of bony ti ue covering the root of a tooth. It differs in structure from ordinary bone in containing a greater number of Sharpey’s fibers. 3. An adhesive filling material used in dentistry. adamantine c., a dental filling material composed of powdered pumice stone mixed with an amalgam of mercury and silver. muscle c., myoglia. nerve c., the neuroglia. tooth c., cement (2d def.).