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Flashcards in exam1 Deck (19):
1

horizontal angle

Anglelation of PID around head

2

Radiopaque

light area on film structures that are absorbers of X-rays
thicker more mineralized substance
Most radiopaque -enamel

3

lamina dura

radiopaque line around periodontal ligament
representing bone

4

Radiolucency

Dark areas on film
structures are less dense poor absorbers of X-rays

5

periodontal ligament space

radiolucent line inside roots and outside lamina dura

6

Genial tubercles

bony extensions on lingual surface of anterior mandible
appear. radiopaque-light at midline surrounding foreman ovale

7

Mental fossa

appear as a diffuse radiolucency around roots of incisors

8

internal oblique ridge

protuberance of bone on the LINGUAL aspect of the mandible

9

spatial resolution

How well a radiograph is able to depict small objects

10

Penumbra

unsharpness

11

what is the most significant cause of unsharpness

movement

12

Magnification

image size/object size

13

Distortion

unequal enlargement on parts of image

14

What are the 2 types of Distortion

Size distortion-Magnifcation
Shape distortion- Foreshortening/Elongatiom

15

Magnification%

SID/SOD

16

for ideal image formation you should have

Long source film distance

17

lingual foramen

appears as small radiolucency surrounded by radiopaque cortical walls

18

Mental ridges

protuberances on anterior aspect of mandible

19

when will u have to retake

Technical error +missed criteria