The dentist of the provincial town of Upper Yamki made an unexpected scientific discovery by finding the thirty-third tooth in the patient’s oral cavity, Ivan Sergeyevich Travkin. Travkin, exhausted from pain, was taken to Moscow. Ivan Sergeyevich first becomes a patient of a madhouse (thanks to envious persons), and then — a hero of a scientific international conference and, finally, a patient of a dentist professor Bruk.
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Character: Ivan Sergeyevich Travkin
Character: Galina Petrovna Pristyazhnyuk
Character: Roza Lyubashkina
Character: Lyuba Travkina
Character: Frosya
Character: Misha
Character: Arkadiy Borisovich Sheremetyev
Character: Prokhorov
Character: Igor Bezrodnyy
Character: Rodion Khomutov
Character: Anatoliy Petrovich Ivanov
Character: Vasiliy Lyubashkin
Character: Mitrich
Character: director of the regional museum
Character: professor Bruk
Character: Travkin's son
Character: Travkin's son
Character: dentist
Character: medical orderly
Character: Gorina
Character: maid
Character: professor of dentistry
Character: Valentin Petrovich, Roza's father
Character: commission member
Character: medical orderly
Character: assistant director on television
Character: psychiatrist
Character: Nina Svetlova, TV presenter
Character: taxi driver
Character: psychiatrist
Character: medical orderly
Character: Viktor Viktorovich
Character: head doctor of a mental hospital (uncredited)
Character: Bruk's assistant (uncredited)
Character: Reporter na stadione