Dental crown too big led to extraction? (Photo)

Hello, I'm a 40yr old male, based in Sydney but I have been regularly using a Colombian dentist whenever I visit Colombia that my wife ( who is Colombian) uses when I need any more complex procedures and are very good only due to the extremely high prices of Australian endontistry. Past history is that had had to large infections above the root of both my back molars that already had root canals and crowns , a procedure was made ( I can't remember the exact name) where she cut the