The August 26 1926 edition of the Toronto Daily Star contained this photograph of Canadian swimmer Mary Casson:
My first thought when I saw this was that better dentistry is now available to almost everybody: nowadays, you’d have to be very poor to be young with a tooth missing or lopsided like that.
I couldn’t find anything on Mary Casson, partly because there was an actress with the same name who passed away in 2009 at the age of 95. The only reference that I saw was that she was posthumously honoured at the 2015 University of Toronto Sports Hall of Fame ceremony.