About: http://webisa.webdatacommons.org/214972760

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	These prior art devices have generally been made of sponge rubber and other permeable material so that the jackets could be first soaked in the liquids used and then applied to the teeth and gums.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com