After the extraction of the back teeth belongs to the missing teeth, not need to fill the teeth, but need to be prosthetic restoration, but if for wisdom teeth generally do not need to be restored.
Posterior alveolar teeth are clinically called molars, and the extracted molars generally do not need to be restored if they are wisdom teeth, while other molars need to be restored with a denture to restore chewing function and occlusal relationship after extraction.
If the extracted teeth are not restored in time, the maxillary teeth and neighboring teeth will be elongated, easy to lose food inclusions, chewing function will be reduced to affect the chewing. After the extraction of posterior alveolar teeth restoration can be considered removable denture, fixed denture and implant denture restoration.
The specific need for restoration and restoration into what type of teeth need to go to the hospital to determine the examination.