Thomas undergoes dental surgery, gets custom mouthguard

Boston Celtics guard Isaiah Thomas underwent intensive dental work Monday, and was in the starting lineup for Game 2 against the Washington Wizards on Tuesday night wearing a custom mouthguard.

Thomas lost one of his front teeth during Sunday's Game 1 victory over the Wizards, but it appears the damage was more extensive.

"The tooth that was knocked out was not the only one that was affected," Celtics coach Brad Stevens said, according to ESPN's Chris Forsberg. "So he had some other issues there ... he was in getting oral surgery."

Stevens added Thomas will have custom mouthguards going forward.

"Sometimes when guys are strongly encouraged to wear those, they wear them," Stevens said. "And sometimes they throw them. So we'll see."