Are mouth plates effective in treating tmj?

Maybe: Only way to know is to try it. But don't give up after only one treatment. And i would also get more than one opinion before jumping into expensive therapies before other options are tried.

Yes: Bite plates can be very helpful. They must be properly designed and adjusted to a neuromuscularly balanced and physiologic position. They are both diagnostic and therapeutic.

Maybe: Tmj is a group of disorders related to the jaw joint and not a diagnosis. There are multiple causes of "tmj" from muscles, ligaments, tendons, nerves, or even tumors. The most effective treatment may be not be a mouthguard. Furthermore, there are many types of mouth guards and they do different things. One kind can make certain conditions better and other conditions worse.

Yes: Often, yes. Not always. Make sure you are being treated by a TMJ expert.