I got extreme pain after 10 days of wisdom tooth extraction and got an x-ray reports it doesn't show any remnant around and numbness around around left side of mouth got worse, what causes the pain and increased numbness after that long?

May be infection. If your treating Dentist can't help you please see a specialist Oral Surgeon. Antibiotics may be in order.

YOU MAY HAVE A DRY SOCKET IN EXTRACTION SITE. NO BLOOD CLOT FORMED AND YOU HAVE EXPOSED BONE THAT IS PAINFUL.IF SWELLING ,THAN A POSSIBLE INFECTION AND ANTIBIOTICS ARE NEEDED. IF DRY SOCKET THAN A PASTE ON A GAUZE SHOULD BE PLACED IN SOCKET.