For the past 12/13 years I have had no sensation in the left side of my head and face. It’s permanent and the cause is known. About a week ago, I started to bite the inside of my lower lip. It’s happening every time I eat. I can’t feel any pain, but do realise that it’s happening. I’m in my early 70s and my lower front teeth have started moving and I’m wondering if that is starting to affect my bite. I’m seeing my dentist in the New Year and will discuss this with him, but was wondering whether there might be something I can do in the meantime, short of chewing with my mouth open! I’m grateful for any tips. Thank you.