You stop imagining Googled information and se a dentist  you are too young kid let your dentist do your job

You discuss with your orthodontist regarding tooth extraction in lower jaw .based on opg and clinical examination, treatment can be given. You can consult through this for further details.

Without examination difficult to tell.

Hi. If there is less space needed to be created then we usually remove one teeth only. It has a little to do with the symmetry but just thinking about symmetry if we extract 2 teeth instead of one it might result in more space left over after the treatment is accomplished. I hope I was able to clarify your query. Have a nice day