Question

the bacteria present on unclean convert the sugar in food in the substance which cause tooth name the substance which part of it does it affect​

Answer 1

Answer

There are several kinds of bacteria which are present in a tooth which is unhygienic or is not clean, the role of the bacteria is to convert the sugar or the leftover food in the tooth into a lactic acid. When the acid is formed it decays the enamel on the tooth and this also affects dentin

Explanation:

Answer 2

It creates lactic acid which causes our teeth enamel to dissolve leaving the tooth unprotected from bacteria present on unclean surfaces