The sexual adventures of an elderly dentist (1980)

Marcelo decides to visit his old friend, dentist Luciano, and finds him at work in the company of a prostitute. After learning that the doctor's marriage has long become a burden for him, Marcelo suggests that his friend discard false modesty and have a good time in the company of his many acquaintances. However, Luciano, who carefully avoided family scandals, immediately after the start of his escapades, falls under the suspicion of his wife, who decides to deal with her faithful Marcelo, who is leading her astray.