The modern dentist is not limited to the extraction of dental pieces, the restoration of those affected by caries and their replacement by means of prostheses, but also, together with doctors, investigates a large number of preventive and curative methods. of general affections that have their origin in the mouth. A few years ago, Dr. Mayo, a renowned North American surgeon, said in a conference he gave in Chicago: “The first great step in preventive medicine must be taken by dentists.” HLM