My dentist told me at thirty-five that I had been clenching my jaw for at least fifteen years and that I was about to need a guard. She said it in passing, the way you would mention a tire that needed rotation. I drove home and had to pull over twice. I do not know how to explain why. The closest I can come is that nobody had ever told me my body had been holding something I had not given it permission to hold. The numbers on TMJ are absurdly skewed female. I had not, until that afternoon, ever thought about why.

I started keeping a list. The list was of moments, day to day, when I noticed my jaw was clenched. I expected the list to look like a stress journal. It did not. It looked like a list of moments when I was about to say something and had decided not to. Some of the items were small. My boss had cut me off. A coworker had made the same comment for the fourth time. My mother-in-law had used a particular tone with my daughter. Some were larger and I will not write them down here. What the list told me, eventually, was that my jaw had been keeping track of the things I had been swallowing back. It had a more accurate ledger than I did.

I started saying some of the things. Most of them small. The pattern was that I would feel the clench, register the thing I had been about to say, and say it. The first three months were terrible. I lost a friend. I had two difficult conversations with my mother-in-law. I told a coworker that I had asked her three times to stop and that I would not be asking a fourth. My doctor had been treating my chronic pain as a tolerance issue for years. I now think it was a translation issue. My body had no idiom for the thing my mouth was not saying, so it borrowed muscle to say it instead.

I still wear the night guard. The jaw is not all the way unclenched and may never be. The dentist tells me the damage is structural at this point. What has changed is the volume. The jaw is quieter. I am louder. The exchange rate, it turns out, was approximately one-to-one, and I am the one who got to pick which side of it I would rather live with. I picked. I do not regret picking. I do, sometimes, regret that I had to.