What is a consistent landmark on a lateral cephalometric radiograph for the cranial base?

The inner contour of the anterior wall of the sella turcica is a key reference point in the evaluation of lateral cephalometric radiographs, particularly when assessing the cranial base. This landmark serves as a reliable anatomical reference because it is consistently located at the midline and provides a stable positioning point for measurements pertaining to the positioning of the teeth and jaws in relation to the cranial base.

The sella turcica, a saddle-shaped structure located on the sphenoid bone, houses the pituitary gland and is surrounded by several vital anatomical references. The anterior wall of the sella turcica is particularly useful because it maintains a consistent appearance across individuals, allowing for comparisons in cephalometric analyses.

In orthodontics, establishing an accurate cranial base reference is crucial for diagnosing and planning treatment, making the inner contour of the anterior wall of the sella turcica especially relevant in cephalometric studies that assess growth patterns and relationships in craniofacial development. This reliability underscores its importance over other potential landmarks that may not have the same degree of consistency.