Dental fillings are possible during breastfeeding. During the breastfeeding period, medication and examinations involving radiation should be avoided, but other treatments are generally possible. Tooth filling is the main method to treat caries, the main step is to remove the decayed tissue and decayed matter on the tooth with a dental drill, and then fill the tooth with filling material, so that the caries can be well controlled and not to develop further. Breastfeeding is the period from the very beginning to the end of breastfeeding, generally it is to do some simple disposal as much as possible. Filling is the most basic treatment for caries, especially for superficial and medium caries, as well as some deep caries without obvious symptoms, all can be treated during breastfeeding period. For some cavities that have developed into pulpitis and need to be treated as soon as possible, it may be necessary to stop breastfeeding during the treatment period. For women who are preparing for pregnancy, they should treat the oral caries, periodontitis, pulpitis, periapical infection, etc., and also remove the wisdom teeth that are blocked, and try to remove all the hidden problems that may exist before pregnancy. Once you do not pay attention to oral problems, you can only do simple palliative treatment during pregnancy and breastfeeding, and you can do simple fillings during breastfeeding, so you must pay attention to oral diseases, otherwise it is more painful to have dental diseases during pregnancy and breastfeeding.