If baby teeth become diseased or decayed it can lead to pain and infection. It can also be difficult for children to eat a well-balanced meal. Untreated cavities also increase the amount of decay causing bacteria in the mouth. As permanent teeth erupt, they are at increased risk for developing cavities because of the higher bacterial count. Baby teeth also hold space in the mouth for the erupting permanent teeth. If the baby teeth become decayed or are taken out too early, the permanent teeth often become crowded and will likely need braces to straighten them in the future. In any case you have to try saving your child tooth, if pulled out at early age , may lead to serious crowding issues in the future.