Model of an adult skull showing overdevelopment of the lower jaw, England, 1950-1970
The model shown in the middle of the top row is of the front part of an adult skull. It was created by dentist and oral surgeon Dr Desmond Greer Walker (1911-1987). It illustrated a condition known as a cross bite. A cross bite is where the lower teeth do not ‘line up’ with the upper teeth. They appear to sit in front, behind or to the side of the upper teeth. An untreated cross bite can lead to limited jaw movement, popping and cracking in the jaw joint, and facial pain. Many cross bite cases can be corrected by braces fitted by an orthodontist. A cross bite results from overdevelopment of one side of the lower jaw.
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The skeleton of the head of a vertebrate animal, including the brain case, or cranium, and the bones and cartilages of the face and mouth. The skull can be subdivided into two parts: the cranium and the mandible. The human skull is made up from 22 bones.
Glossary: model - representation
Use for a scaled representation of an object or structure, usually three-dimensional. The item is often idealised or modified to make it conceptually easier to understand.
The study, treatment and management of diseases affecting the mouth, jaws, gums, teeth and their supporting tissues.