Is it common to pull all teeth after no way save them you have 15 left?

No, it is not common to pull all teeth after no way save them if you have 15 left. In such cases, dentists typically focus on preserving as many natural teeth as possible through various treatments, such as root canals, crowns, bridges, and fillings. Removing all teeth is usually considered as the last resort when other options have failed and the teeth are beyond saving.