Assertion: nitrous oxide | /r/ObjectUse | used in surgery
Facets:
value: widely
type: DEGREE
value: for its anaesthetic and analgesic effects
type: PURPOSE
value: as an anaesthetic
type: MANNER
value: as analgesic
type: PURPOSE
value: since 1844
type: TEMPORAL
Source sentences:
text: Nitrous oxide has been used in dentistry and surgery, as an anaesthetic and analgesic, since 1844.
text: Today, nitrous oxide is widely used in surgery and dentistry for its anaesthetic and analgesic effects.
text: Today, nitrous oxide is widely used in surgery and dentistry for its anaesthetic and analgesic effects.