Some of the diseases that can be transmitted from dental fillings in children are hepatitis B or HIV, but the probability is relatively low. Strictly speaking, although the probability of contracting infectious diseases such as Hepatitis B virus or HIV is very low when filling a tooth, the possibility is still there, and it is important to choose a regular hospital to do so when filling a tooth. Although the HIV virus dies quickly when it leaves the body fluids, if sterilization is not standardized and strict, the virus is likely to hide in the grooves of the machine and spread to others through the fillings. In addition, hepatitis B virus transmission may also occur. The virus is stubborn and resistant to low-temperature, dry, and low-concentration disinfectants, and even if you have received the hepatitis B vaccine, you may not be able to immunize yourself against it, and you may still be able to transmit the virus through your skin or mucous membranes.