I have bruxism and some hearing loss, could it be my eustachian tube blocked fully?

Not likely: Bruxism (habitual grinding of the teeth) and other disorders of the temporomandibular joint (the jaw socket) can cause pain that is described as an earache. Eustachian tube blockage can cause a painful middle ear infection or blockage of hearing. These diseases are commonly confused, because both cause pain, but they are not related.

Unrelated: Bruxism and hearing loss are unrelated. You may have hearing loss because of eustachian tube dysfunction. However get checked with your doctor.

Eustacian tube: The nerve that controls our jaw muscles also controls one of the muscles associated with the eustacian tube. In some people with tmd, they will experience a fullness in their ear and the feeling of having hearing loss.