Assertion: tooth's extraction | /r/HasProperty | required
Facets:
value: previously
type: TEMPORAL
value: in order to make space
type: PURPOSE
Source sentences:
text: Extractions of some permanent teeth that have not erupted — such as the canines, which are also known as fangs or eye teeth — may be required in order to make space for orthodontic treatment.
text: Filling material that is compatible with pulp tissue has been developed; it could be used where previously a root canal or extraction was required, according to 2016 reports.
text: If so, a "surgical" extraction will be required.