The defenseman skated for the second straight day Sunday but hasn't played since Game 3 of the Western Conference Final against the San Jose Sharks when he was hit in the mouth by a shot from Sharks defenseman Brenden Dillon.
RELATED: [Complete Bruins vs. Blues series coverage]
Dunn, who has seven points (two goals, five assists) in 16 Stanley Cup Playoff games, has been wearing a full cage in practice.
Defenseman Carl Gunnarsson replaced Dunn in the St. Louis lineup for Games 4-6 against San Jose. He was plus-1 in the three games and averaged 11:47 of ice time.
Blues rookie forward Robert Thomas, who has taken multiple maintenance days since the conference final, was a full participant at practice Saturday, but he did not come out onto the ice until the session was ending Sunday and skated on his own for the second time in three days.
Thomas, who has six points (one goal, five assists) in 19 playoff games, said he feels well and is looking forward to playing in the Cup Final.
"It's obviously pretty special," Thomas said. "It's pretty special for me to be a part of it. A lot of the guys have been fighting for many years to get to this point. For me, it's just a blessing and such a great experience, and I can't wait for it to get started. It's been a grind the whole playoffs. We've played some big, heavy teams in the] Winnipeg [Jets], Dallas [Stars] and San Jose."
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