A 12 year old male patient wants to undergo orthodontic treatment as he feels his upper incisors are too prominent. He is advised a pre-treatment lateral cephalogram. What is the value of distance ‘A’ ?
Correct Answer: 60 inches
Description: Diagrammatic representation of the American standard cephalometric arrangement. By convention, the distance from the X-ray source to the subject's midsagittal plane is 5 feet (60 inches). The distance from the midsagittal plane to the cassette can vary in many machines, but must be the same for each patient every time.
Category:
Dental
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now