From Wikipedia:
El Chavo (English: The Kid or The Boy, but chavo also meaning “cent”); – also known as El Chavo del Ocho (English: The Kid from number Eight or The Boy from apartment #8) during its earliest episodes – is a Mexican television sitcom created by Roberto Gómez Bolaños, produced by Televisa. It premiered on April 27, 1972 and ended on June 12, 1992 after 7 seasons and 311 episodes. The series gained enormous popularity in Hispanic America, Brazil, Spain and other countries.
Since the start of the show, the logo uses Baby Teeth. The title card design evolved over the years, with Milton Glaser’s geometric typeface being a constant. Around 1978, Baby Teeth was also used for the credits in the opening sequence.
The Internet Archive has archived most of the more than 250 episodes. Read more about the history of El Chavo on Lost Media Wiki, and see also the dedicated Fandom site.