Facial nerve an incorrectly placed dental local-anesthetic (Inferior alveolar nerve block). Although giving the appearance of a hemi-plegic stroke, effects dissipate with the drug. When the facial nerve is permanently damaged due to a birth defect, trauma, or other disorder, surgery including a cross facial nerve graft or masseteric facial nerve transfer may be performed to help regain facial movement. Facial nerve decompression surgery is also sometimes carried out in certain cases of facial nerve compression. Voluntary facial movements, such as wrinkling the brow, showing teeth, frowning, closing the eyes tightly (inability to do so is called lagophthalmos) , pursing the lips
Forensic facial reconstruction researchers attempting to identify human remains of two Canadian Army soldiers lost in World War I. One soldier was identified through DNA analysis in 2007, but due to DNA deterioration, identifying the second using the same techniques failed. In 2011, the second of the soldiers' remains discovered at Avion, France were identified through a combination of 3-D printing software, reconstructive sculpture and use of isotopic analysis of bone. Forensic facial reconstruction Forensic facial reconstruction (or forensic facial approximation) is the process of recreating the face of an individual (whose identity is often not known) from their skeletal remains through an