Gas esilarante

Charlie Chaplin

Dentist's assistant

Fritz Schade

Dr Pain, the dentist

Alice Howell

Dentist's wife

Joseph Sutherland

Short Assistant

Slim Summerville

Patient

Josef Swickard

Patient

Mack Swain

Patient

Helen Carruthers

Pretty Patient (uncredited)

Fred Hibbard

Bearded Patient (uncredited)

Gene Marsh

Patient (uncredited)