Wow, I don't think I documented exactly when my toothache began but it's been about 6 months. I can't say I'm 100% over it but normally it only hurts slightly, sometimes, when I purposely eat certain things on the bad side. I started eating on that side, in the back where the toothache is, on purpose because you have to put pressure on your teeth to keep your jaw strong, which in turn prevents tooth problems. Sometimes in addition to brushing normally I firmly press down and sideways on my back teeth with my toothbrush, but I don't press firmly when I use the brushing motion. I want to start chewing gum so I can exercise my jaw without getting food caught in my sensitive area.
I still use my alcoholic mouthwash a maximum of once a day. I read that alcoholic mouthwash can cause deterioration of the root or jaw or something, so that's another reason to exercise my jaw.
I said "normally it only hurts slightly" because at certain times, I think when there's certain food stuck in my gums by my left wisdom tooth, sideways pressure can cause significant pain that I can feel from from chewing something firm or from pressing against my teeth with the back of my tongue. I may have Pericoronitis even though I'm in my 50s, though the top of my wisdom tooth is completely visible. After I clean out my mouth, a tongue press test doesn't cause pain.
I've mentioned that grape skin caused this. It began with extreme soreness of the gum by my wisdom tooth. I'd had prior experience with mouth soreness after eating grapes so I knew to wash out my mouth, and I attempted to wash it very well, but I think that may have caused the problem. I bet I pushed grape skin deeper in my gums as I repeatedly rinsed my mouth. I quit eating grapes but now when I rinse other things out of my mouth I start gently on the right side where I haven't had problems. I don't want the food there getting to the bad side of my mouth. Then I'll rinse the bad side and sometimes use a toothbrush to see if I can get any food out, rather then pressurizing my mouth with water. Vigorous water swishing while attempting Dizzy Gillespie cheeks is the last step.
There were a couple of times when I rinsed, flossed, rinsed, brushed, and rinsed again, then reached the mouthwash stage and a food particle came out.
I started using fluoride mouthwash in addition to the alcoholic and non-alcoholic antiseptic mouthwash, so I can rinse well after brushing without worrying about washing away the fluoride. I've tried two, didn't like either, but I think there's a flavor of ACT that I'll end up liking. The "less intense" Listerine Nightly Reset seemed perfect because I didn't want yet another product that burns (even mint toothpaste is slightly strong to me) but the glycerin or whatever leaves a coating in my mouth that I don't like so I started looking for something else.