Assertion: crown | /r/HasProperty | layered
Facets:
value: for strength
type: CAUSE
value: with metal
type: OTHER
Source sentences:
text: These crowns are first layered with metal for strength then color-matched to your other teeth Molded to fit directly onto your gum line, these crowns provide a quick-fix option Used for front and back teeth, these crowns are a more permanent option, especially for people with metal allergies