The purpose of crowns for children’s milk teeth is to protect them and maintain them for as long as possible without harm to the body.
When the decayed portion of the baby tooth is large or after root canal treatment, it is recommended to wear a prefabricated crown. Prefabricated crowns are hard and not easily dislodged, which maximizes the retention time of milk teeth in the mouth until the eruption of permanent teeth.
Children are young and slobber a lot, it is not easy to operate when filling, easy to import water in the tooth cavity, resulting in filling easy to fall off or secondary caries; children after root canal surgery teeth become brittle, easy to split when biting hard objects, resulting in extraction, if not to the replacement period of missing milk teeth, will result in crowding of the teeth. This is why you can wear a pre-formed crown after a filling or root canal.
Pre-formed crowns will fall out with the loss of milk teeth. If the pre-formed crowns are loose, you should visit the dental clinic in time to have them re-bonded.