Lec 5 Intraoral Projections, FMRS

Question 1

What are the 3 intraoral projections?

Answer 1

1. Periapical
2. Bitewing
3. Occlusal

Question 2

Shows the entire length of the tooth and the surrounding bone.

Answer 2

Periapical projections

Question 3

Shows only the crowns of teeth and the adjacent alveolar crests

Answer 3

Bitewing projections

Question 4

Shows an area of teeth and bone larger than periapical images.

Answer 4

Occlusal projections

Question 5

What does FMRS stands for?

Answer 5

Full-Mouth Radiographic Series

Question 6

In a FMRS, there are __ periapical views and __ bitewing views

Answer 6

• 17 periapical
• 4 bitewing

Question 7

3 types of projections for a typical FMRS?

Answer 7

anterior periapical
posterior periapical
bitewing

Question 8

1. Anterior Periapical (Use No. __ Receptor)
   - Maxillary central incisors: __ projection
   - Maxillary lateral incisors: __ projections
   - Maxillary canines: __ projections
   - Mandibular central and lateral incisors: __ projections
   - Mandibular canines: __ projections
2. Posterior Periapical (Use No. __ Receptor)
   - Maxillary premolars: __ projections
   - Maxillary molars: __ projections
   - Maxillary distomolar (as needed): __ projections
   - Mandibular premolars: __ projections
   - Mandibular molars: __ projections
   - Mandibular distomolar (as needed): __ projections
3. Bitewing (Use No. __ Receptor)
   - Premolars: __ projections
   - Molars: __ projections

Answer 8

Anterior periapical:
- No. 1 receptor
- Mx CI = 1
- Mx LI = 2
- Mx CN = 2
- Md CI & LI = 2
- Md CN = 2

Posterior periapical:
- No. 2 receptor
- Mx PM = 2
- Mx M = 2
- Mx Distomolar = 2
- Md PM = 2
- Md M = 2
- Md Distomolar = 2

Bitewing
- No. 2
- PM = 2
- M = 2

(Lahat 2 projections except Mx CI)

Question 9

Radiographs should record the complete areas of interest on the image.

• Periapical radiographs must show the _____ of the roots and at least _____ of periapical bone.
• ________ plus some surrounding ______ should be seen.
• Bitewing examinations should demonstrate each posterior ______ surface at least _____.
• Overlap of adjacent proximal tooth surfaces should be __________ of the enamel thickness.

Answer 9

• full length of roots; 2mm of periapical bone
• abnormalities; normal bone
• proximal; once
• less than one third

Question 10

Radiographs should have the least possible amount of _______.

Mostly caused by improper ______ of the x-ray beam or improper ________ of the receptor.

Answer 10

• distortion
• angulation
• positioning

Question 11

Images should have optimal _____ and ______ to facilitate interpretation.

Radiographic exposure settings, including peak _______ (kVp), the _______ (mA), and ________ (s) are crucial parameters that influence density and contrast for both digital- and film-based radiography.

Answer 11

• density & contrast
• kilovoltage; milliamperage; exposure time