Assertion: crown | /r/HasProperty | installed
Facets:
Source sentences:
text: If the tooth has extensive decay, become infected or been injured, a root canal ($300-$1,500 for a front tooth, $500-$2,000 for a molar) might be needed before the crown can be installed.
text: for a front tooth, for a molar) might be needed before the crown can be installed.