Could I do a filling instead of an extraction to this tooth?

[MNVA]

 

[Dr M]

The x-ray is not suited in order to give a clear opinion. A peri-apical or bite-wing x-ray would be better in order to determine the extent of the decay. Based on THIS x-ray however, it does seem like the decay extends below the bone level, so in my opinion an extraction would be a better option