To take the anterior view of the occlusion, let the patient turn the head slightly toward you.  The camera frame should be parallel to the imaginary occlusal line.  When the photo is not straight (Fig.8), it appears that we are unable to set the teeth straight, either.

Photos for Ortho

Xin Wei, DDS, PhD, MS 1st edition 09/27/2016, last revision 09/28/2016