I have Sjogrens Syndrome which has in the last year completely ruined my mouth - 55 years with a few fillings, and the last 18 months has been hell - only have a couple of molars left and now my fronts are literally crumbling! It is an auto-immune disease which is attacking my moisture producing glands and it is vile .... anyway at one point I was getting horrendous pain across my face from my jaw into my ear, it was terribly painful and I feared that it was TN brought about by trauma as the dentists were having an awful job getting rid of the teeth despite my bone decreasing, and the nasty gum disease I have been left with despite taking fluoride supplements, oral probiotics, false saliva etc .... it has fortunately now gone, but I was taking Gabapentin for a while ... another one would be low dose Amitryptiline and other Tricyclic Anti-depressants such as Imipramine - they all have side effects unfortunately but generally there would be one that suited you better.
TN is also known as the Suicide Disease because of the dreadful pain it causes, so I do hope yours goes away very soon ....