If you do not have tinnitus but have hearing loss by all means, if it assists with any missing frequencies. However if you do have tinnitus using a hearing aid will make tinnitus worse and you will become hyper sensitive to noise.
Difficulty hearing due to tinnitus means that the frequencies already playing in your head mask the external sound entering. A hearing aid would amplify the sound to the already affected cilia (tinnitus frequency related) and could create more damage and increase the tinnitus.
Whatever the cause of the tinnitus even if only temporary (hear infection, noise induced, TMJ disorders, medication etc), tinnitus becomes an entity unto itself, it's part neurological (in this case neurobiological), that's why it is so difficult to treat. I have had temporary success using dry needling but it's painful. It halves the tinnitus but only for a few days due to the neuroplasticity of the brain. I have other avenues I will be considering. As soon as I see if they work I will keep everyone posted.
Cheers