Open wide, patients — the allegedly sloshed dentist is taking appointments again.

The Long Island cavity filler who was busted Monday for allegedly using his drill while blitzed will return to work today, according to a source at the office of the dentist who filled in for him yesterday.

Robert Garelick, 57, of Melville, closed his Lindenhurst office after he was charged with misdemeanor reckless endangerment.

He pleaded not guilty.

The answering machine at his office said it would reopen at 3 p.m. today.

His lawyer did not return a call for comment yesterday.