What are the chances of getting hepatitis B when filling teeth?

Hello! Whether it is hepatitis B, hepatitis B virus carriers or hepatitis B virus carriers, there is a virus more or less, which is more or less infectious. The main transmission routes of hepatitis B are: first, blood transmission; The second is the close contact in life after the skin and mucosa are damaged, such as using lunch boxes, toothbrushes, towels and razors. The third is sexual transmission; Fourth, mother-to-child vertical transmission; The fifth is iatrogenic transmission, such as using unclean syringes, poor disinfection of endoscopes, and unsanitary filling of teeth.