'Mighty Ducks' Star Shaun Weiss Is 170 Days Sober, But Needs New Teeth - TMZ

he's looking much better and happier.

Shaun's buddies were desperate to get the troubled child star help before it was too late -- he was dealing with a slew of life-threatening issues and was at one point, living on the streets before January's meth and burglary arrest.

so hopefully, he keeps getting the help he needs, including some new teeth.