<prompt> Dentigerous cyst arises fromThe root of a caries toothThe periosteum of the fractured mandibleAn unerupted permanent toothThe sequenstrum of osteomyelitis of mandible  <response>: Dentigerous cyst is a unilocular cystic swelling arising in relation to the dental epithelium from an unerupted tooth SRB,5th edition,360. 