Just to clarify, nitrous oxide (laughing gas) is not a pain killer. It will relax the patient and in in the case of a child, make him a little more docile and cooperative. It does not put a patient out completely. If your child is a bit anxious, the dentist may recommend the nitrous oxide to calm him. If there is any chance the cavities may be a bit deep- then novocaine is used to avoid unnecessary pain. A second opinion is reasonable if you have any doubts. Please do the dentist a favor and remain outside the treatment room. If you are anxious at all, your little one will be too!
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