Table 1: Questions answered by observer panel with respect to CBCT image cuts.

No. Question Possible Answers
Q1 The visibility of the top of the alveolar crest is: Very good / good / poor / very poor
Q2 The visibility of the buccal and palatal cortical plates is: Very good / good / poor / very poor
Q3 The estimated bone density at the implant site is: D1/ D2/ D3/ D4
Q4 For the purpose of implant placement, the quality of the image appears to you as: Very sufficient/ sufficient/ insufficient/ very insufficient
Q5* The visibility of the mandibular canal is Very good / good / poor / very poor
Q6* Do you need to use the sagittal or panoramic slices/cuts to identify the mandibular canal? Yes/ No
Q7* Have you tried to move forward and back in panoramic slices/cuts to locate the mandibular canal? Yes/ No

* Questions 5, 6 and 7 were answered only for images of the posterior mandible