Jaw abnormality sagittally divides the face into five equal parts: It is insufficient to derive at a diagnosis of jaw deformity solely based on the clinical examination. Hence, additional information is gathered from diagnostic tests, which may include dental model analyses and radiographic imaging studies. Mandibular micrognathia is the condition when lower jaw is smaller than normal. Failure of the ramus to develop will give rise to micrognathia.<ref name="Elsevier/Churchill Livingstone"></ref> Micrognathia can be classified as either congenital or acquired. Clinical appearance of some patients with congenital type of mandibular micrognathia can have a severe retrusion of the chin but by actual measurements,
Iron jaw (circus) the Human Butterfly due to the removable wings which traditionally adorn the performer's costume. It is also known as the 'Jaws of Life'. Tiny Kilne, in a footnote to her memoir, describes Iron Jaw as: "(a) holding one's grip by the teeth bulldog-fashion, suspended in the air; (b) lifting another person's weight; (c) juggling furniture or tugging an automobile- in short, any work involving teeth-power." There are now only 5 Iron jaw artist in the world in the 21st century: Iron jaw (circus) The Iron Jaw is a traditional aerial circus act. The act consists of a performer raised into