Dental Radiography Principle and Techniques Chapter 2 Latest Update Already Passed

Dental Radiography Principle and Techniques Chapter 2 Latest Update Already Passed What is the correct angulation for an adult periapical X-ray in the maxillary arch? a) 20° b) 45° to 60° c) 75° to 90° d) 30° Which of the following is the most commonly used film size in dental radiography? a) Size 0 b) Size 2 c) Size 1 d) Size 3 What does the term "radiolucent" refer to in dental radiography? a) Areas that appear lighter on the X-ray b) Areas that appear darker on the X-ray 2 c) Areas that allow more X-rays to pass through d) Areas with high density What is the role of the lead apron in dental radiography? a) To protect the patient from radiation exposure b) To prevent dental decay c) To focus X-rays on the area of interest d) To protect the operator from radiation Which of the following is the correct exposure time for a bitewing X-ray in an adult? a) 0.25 seconds b) 0.1 seconds c) 1.2 seconds d) 0.3 seconds What is the effect of overexposure on a dental radiograph? a) Increased contrast b) Lightening of the image 3 c) Darkening of the image d) Loss of image sharpness What is the purpose of the collimator in a dental X-ray machine? a) To reduce the size of the X-ray beam b) To filter out excess radiation c) To stabilize the X-ray film d) To focus X-rays on the film Which of the following factors affects the quality of a dental radiograph? a) Exposure time b) Film type c) Tubehead position d) All of the above What is the correct technique for taking a periapical X-ray? a) The film is placed parallel to the long axis of the tooth b) The film is placed at a 45° angle to the tooth 4 c) The film is placed against the tooth’s surface d) The film is tilted at 90° What is the ideal distance between the X-ray tube and the patient during an exposure? a) 6 feet b) 10 feet c) 3 feet d) 12 feet What is the recommended speed for processing dental X-ray films? a) 10 minutes b) 15 minutes c) 2-3 minutes