Turner angle

The Turner angle, sometimes referred to as the "Turner angle of the anterior cranial base," is a measurement used in the fields of orthognathic surgery and orthodontics. It is defined as the angle formed between the occlusal plane and the line connecting the sella turcica (a saddle-shaped depression in the sphenoid bone of the skull that houses the pituitary gland) and the nasion (the bridge of the nose).