Often, in the case of jaw or face plates, the only way to make the mould is to take a plaster cast of the outside of the patient's head, says Dr Richards.

ECONOMIST: MONITOR

Typically, this involves one jab in front of each ear and another at the angle of the jaw on each side of the face.

BBC: NEWS | Health | Botox 'helps to prevent drooling'

His nose had been broken and his mouth was cut at one corner and the line of the scar across the upper lip and lower jaw showed through the growth of beard over his face.

NPR: Robert Jordan, Hemingway's Bipartisan Hero

Washing with Castile soap and icy water, he worried over his scrawniness, his spindle shins, the green yarns of vein in his forearms, his face so thin that his zygomatic bones and jaw shaped harps underneath his ginger-brown, one-inch beard and mustache.

NPR: Excerpt: 'Exiles'

We were close enough to see the sunken face, heavily stubbled, pinched in around the mouth, jaw sagging.

NEWYORKER: Midnight in Dostoevsky

And then I saw, around the edges of his face, in the balled musculature and the set of his eyes and jaw, that he was in a waking dream.

NEWYORKER: The Reptile Garden