Hello again Boriss,
Thanks for the extra information. With crowded teeth you may have some jaw malalignment - dental advice necessary here, but it does sound like some deep massage around the TMJ (being careful regarding potential bruising) to help alignment would help. I can discuss this further if you wish.
Have you had nerve conduction tests to clarify any brachial plexus injury? If not, seeing a specialist (neuro) would also be a good idea. The muscle wasting and lack of finger tip sensation requires further assessment. If you have also damaged a cervical disc resulting in nerve root or cord compression an MRI would be relevant.
Muscle imbalance after nerve compromise can result in uneven pressures being placed upon cervical facet joints, increasing joint tightness and noises (crepitus).
If you do not have scar tissue formation it may be that tissue adhesions following inflammatory processes have created tissue tightness. Massage for this condition may assist - but be cautious regarding your syndrome.
Overall, you need further specialised assessment to reverse the downward spiral in your condition from worsening.
Once again, I hope this helps.
Cheers,
MrPhysio+