Five years ago, mymaxillofacial surgeon injected my right masseter muscle by needle of an anesthetic for temporary relief from bruxism pain. He hit an artery and gave me a very painful muscle hematoma which resulted in a cheek depression. I've been diagnosed with"tethering to the dermis". I've been to two plastic surgeons, two maxillofacial surgeons and a physical therapist to help break down scar tissue. It has not helped. Drs. are afraid needle insertion will worsen it.