I got tension on temple, jaw, tooth, cheekbone (all unilateral). mri reveals nothing other than chronic blockage on sinus (could that be culprit?)

Maybe if same side: It's worth a month of nasal steroids, nasal antihistamines, leukotriene inhibitors & antihistamine plus nasal rinses to see if clearing blocked sinus will relieve your pain, assuming that clogged sinus is on same side as pain. Of course it also depends upon which sinus is affected. Maxillary sinus infection could cause tooth & cheekbone pain. But wouldn't explain jaw & temple, unless TMJ syndrome

Diagnosis is key: Orofacial Pain specialists are dedicated exclusively to the treatment of orofacial pain, facial muscle pain, TMJ pain, jaw pain, jaw misalignment, facial pain, bruxism, headaches and TMJ disorders. Diagnosis is the key for a successful treatment. See OFP specialist.