Document 2JMYjkX4Y6e72bygvr5ja9pQ6

502 CABBY P. M C CORD Common External Marks of Occupation or Occupational Diseases or Other Diseases (continued) Mark or sign Probable cause Significance Comment Lips, Mouth, Teeth, Tongue, Neck, continued "Beefy" tongue. Herpes (labial)--"cold sores." Occupational fungal disease around mouth. Discoloredgums. Burton line (lead line). Acute multiple dental caries. Dental erosions. "Mulberry molars." Hutchinson's teeth. Vitamin B deficiency. Action of a virus, allergy. Condition limited to Mediter ranean countries. Involves chiefly quail force-feeders. Various metal or mineral deposits, tobacco stain, etc. Bnght purple line at gum margin. Common after exposure to lead. Specific form attributed to work with citric acid, chiefly bakers and confectioners. Erosion from chemicals, such as - from acids or mechanical ero sion such as from glass blowers' pipes: numerous variations; specific variations for many trades, such as battery makers from acid, sewers from thread biting, wind instrument play ers, "tack spitters," brush makers who trim bristles by biting, pencil chewers in offices. Congenital syphilis. Congenital syphilis. One manifestation of vitamin B lack. R. M. I. Virus probably always present but only becomes active under unfavorable conditions such as infection. Organism transferred by quail pecking feeders' faces. Enlarged tongue, roughened, ru gose and red; somewhat re sembles raw beef. Not to be confused with labial chancre. Condition not known in United States. The purple gum line of lead ab sorption, the similar line from bismuth, the blue line follow ing trinitrotoluene exposure or poisoning, purple line from copper, bluish line from mer cury or zinc, purple gums from scurvy. R. M. I. Not diagnostic of lead poisoning. Well recognized in European countries. Uncommon in exag gerated form in United States. Profoundly eroded teeth of acid workers seldom decayed and are not painful. Lines or discoloration of gums are not conclusive proof of any oc cupational disease. Not readily visible as a sign of abnormality. R. M. I. All sugars as used in bakeries and confectionaries may produce some excess of dental caries. Apart from dental erosion consti tuting a sign of occupational damage in many trades, the premature loss of teeth may possibly be related to work as a contributory cause. Dome-shaped, stunted first mo lars due to overgrowth of enamel. Notched incisors with narrow edges and peg topped. Various other dental defects sug gest congenital syphilis. - May be associated with impaired hearing and baked cornea.