Is it generally no issue if I have decay/caries on a baby tooth?

It depends. Is this tooth on you or your child? If on you, it should be determined that the tooth can be saved before repair. If it is for you child it depends on the age of the child and how close the permanent tooth is to erupting. If the tooth will be lost soon, i wouldn't put the child through a restoration. The development of the new tooth root needs to be assessed by xray examination.
Decay on baby teeth. Not only do baby teeth allow a child to eat and chew properly, they hold a space for the permanent tooth. Untreated decay could lead to an infection that could harm the developing permanent tooth. If the tooth is lost prematurely, the permanent teeth may not have the room to erupt in the proper position leading to crowded or misaligned teeth.

Related Questions

What to do if I have a baby tooth that has decay/caries. Will the permanent tooth have it too?

No. The permanent tooth will not come in with decay. It is an entirely new tooth. But it is important that you treat decay in the baby teeth. So see a dentist if you suspect that your child has a cavity. Read more...
Probably unless. Cavities occur from eating food that is sugary and sticky and not keeping them clean by brushing and flossing properly and\or often enough. Unless habits are changed, if you have had cavities on your baby teeth, you will most likely get cavities on your adult teeth. Cavities are not contagious. Change your habits and you will have beautiful healthy teeth the rest of your life! Read more...
Not likely. However, untreated tooth decay in the primary teeth will increase the probability of problems in the permanent dentition. See a pedodontist for consultation. Read more...