Receptor Placement
What size receptor is used for an adult bitewing exposure?
What is: Size 2 receptor
For the molar bitewing exposure, the front edge of the receptor should be aligned with the midline of which premolar?
What is: Maxillary second premolar
Define what error causes overlap?
What is: Horizontal Angulation
What is horizontal angulation?
What is: Side-to-side alignment of central ray.
What is the purpose of a bitewing x-ray?
What is: I'll accept either
• Examine interproximal surfaces of teeth.
• Monitor progression of dental caries.
For the premolar bitewing exposure, the front edge of the receptor should be aligned with the midline/distal half of what tooth
What is: Canine
Define a cone-cut and explain how it happens.
What is: Clear area due to misaligned x-ray beam and receptor
What is vertical angulation?
What is: The up-and-down angle of the x-ray beam
What are the four Basic Steps for Exposing a Bitewing?
What is:
1. Placement – Film placement over area of interest.
2. Horizontal Angulation.
3. Vertical Angulation – +10 degrees.
4. Point of Entry.
What is point of entry?
What is: I'll take either
• Center beam on image receptor.
• Direct beam through interproximal spaces.