Dewar was acquired by Toronto from Minnesota in exchange for Dmitry Ovchinnikov and a 2026 sixth-round pick Friday, per Darren Dreger of TSN.
Dewar (lower body) was activated from injured reserve Monday.
The Wild placed Dewar (lower body) on injured reserve Saturday, according to Michael Russo of The Athletic.
Dewar had a hat trick and an assist in Minnesota's 6-1 win over Nashville on Thursday.
Dewar scored a short-handed goal on one shot in Tuesday's 5-2 victory over Montreal.
Dewar provided two assists in a 5-3 loss to Calgary on Wednesday.
Dewar scored a goal and delivered two hits during Saturday's 5-4 shootout victory over the visiting Ducks.
Dewar scored a goal in a 3-2 shootout loss to San Jose on Saturday.
Dewar produced a shorthanded assist in Saturday's 4-3 overtime loss to the Bruins.
Dewar agreed to terms on a two-year, $1.6 million contract with Minnesota on Wednesday.