Sleep Apnea Mouth Guard Does A Mouth Guard Such As "pure Sleep" Irritate Symptoms Of TMJ Dysfunction?

Does a mouth guard such as "pure sleep" irritate symptoms of TMJ Dysfunction? - sleep apnea mouth guard

I ask because I know it pushes the lower jaw forward. It is painful TMJ and sleep apnea. Do I use now a CPAP, but only lasted a few hours per night. Perhaps the mouthguard can be helped. I do not know.