尽管只是一名牙医助理，查理却冒充牙医。一位病人因麻醉过量而狂笑不止，查理只好用棍子将他打晕。
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
Mack Swain
Helen Carruthers
Pretty Patient (uncredited)
Fred Hibbard
Bearded Patient (uncredited)
Gene Marsh
Patient (uncredited)
