Intraoral Radiographs

Question 1

What are the 3 types of intraoral projections?

Answer 1

1. Periapical
2. Bitewing
3. Occlusal

Question 2

What part of the tooth does the periapical radiograph record?

Answer 2

Record images of the outlines, position, and mesiodistal extent of the teeth and surrounding tissues.

Question 3

What is essential to obtain for periapical radiograph?

Answer 3

Must obtain full length of tooth and at least 2mm of periapical bone.

Question 4

What part of the tooth does the bitewing radiograph record?

Answer 4

Record images of outlines, position, and extent of the crowns and the coronal 1/3 of the inter-alveolar bone and a portion of roots of the maxillary and mandibular teeth.

Question 5

What does the bitewing radiograph detect?

Answer 5

Valuable for detecting:

• inter-proximal caries
• overhangs on restorations
• periodontal conditions
• calculus deposits
• chronic resorption of the inter-alveolar bone
• pulp chamber size
• pulp stones
• occlusal relationship of the teeth.

*Basically valuable for the detection of small inter-proximal carious lesions that are difficult or impossible to find by other clinical methods, including periapical radiographs.

Question 6

What’s the vertical bitewing used for and what series is it composed of?

Answer 6

• Used to extend the vertical coverage of the interalveolar bone and roots.
• Composed of a series of individual periapical and bitewing radiographs.

Question 7

How many films are used for a complete intraoral radiographic survey?

Answer 7

22 films