<prompt> Each of the following is a feature of papillary hyperplasia except:It is a proliferative bone diseaseIt can be caused by wearing the dentures at nightIt can be caused by poor oral hygieneIt can be caused by an ill-fitting denture  <response>: Papillary hyperplasia is characterized by multiple papillary projections of the epithelium caused by local irritation, poor-fitting denture, poor oral hygiene, and leaving dentures in all day and night. 