Question

Which of the following is (are) required for a lateral projection of the skull?

1. The IOML is parallel to the IR.
2. The MSP is parallel to the IR.
3. The CR enters ¾ inch superior and anterior to the EAM.

A 1 only

B 1 and 2 only

C 2 and 3 only

D 1, 2, and 3

Answer 1

B. 1 and 2 only

Step-by-step explanation:

Horizontal projection of the skull requires the IOML to be parallel to the IR, the MSP to be parallel to the IR and during the projection all cracks in the skull are pictured as the sidelong projection gives the total diagram of the skull. A general skull routine incorporates both right and left laterals.