I was told that I should get sealants on my child's teeth. What are they and are they really necessary?

sealants are a top layer on the teeth to help protect from cavities. If your child has a hard time keeping clean and gets cavaties then it's a good idea. If your child has never had a cavity they don't need them but they can be used as precaution. The teeth will be drilled a little bit over the tops of the teeth but your child wont need any anesthetic because it's not drilling into the tooth.