from which month we should use finger brush and how to use?

A. you should start cleaning his teeth from the day the first tooth has sprouted... clean his teeth and mouth everyday twice... use finger brush for the starting... then you can move to the baby brush later on when the baby have all the teeth... especially the inside one.. Later you can go for any kid toothbrush with soft bristle... there are many kid brushes available in the market... they have mentioned the age group in it too. . please select as per the kids age group.. don't use toothpaste until he knows how to spit out... You can just brush his teeth with water and toothbrush only till then ..