Radiology Pt 2

Question 1

sensor shapes and sizes

Answer 1

all different

Question 2

PSP plates

Answer 2

much like film sensor, fit in regular film holders, easier for patient but more exposure

Question 3

the exposure time of hard sensors

Answer 3

less exposure, but less comfortable (.1s) which leads to retakes

Question 4

Periapical Radiograph/Views

Answer 4

includes crown, root, and 2-3 mm of bone

Question 5

Marquette Radiographic Survey includes

Answer 5

14 periapical and 4 bitewings (18 total)

Question 6

type of radiograph used for detection of caries and alveolar crest

Answer 6

bitewing! Interproximals must be visible to detect incipient (early) lesions/caries—patient is biting down

Question 7

bite wing radiograph

Answer 7

used for caries and alvoeolar crest, need the interproximal spaces to be visible b/c caries starts at contact

Question 8

where caries starts

Answer 8

contact point, thus must be able to see interproximal spaces

Question 9

mineralization of dentin and enamel

Answer 9

dentin=63%

enamel=93%

Question 10

pulp chamber with age

Answer 10

obliterated-lose radiolucency (darkness)

Question 11

pulp stones

Answer 11

associated with age and or parafunctional activity (grinding)-dark grey circle apical to DEJ

Question 12

advanced lesion

Answer 12

has passed the DEJ into the dentin-see on a radiograph

Question 13

periapical

Answer 13

at the apex of the tooth; usually caused by pulp death; do vitality test; APICAL lamina dura

Question 14

cause of periapical disease

Answer 14

pulp death

Question 15

Periodontal disease

Answer 15

bone loss of supporting structure such as alveolar bone, PDL, etc. Loss is at the alveolar crest NOT at the apex

Question 16

Radiolucent PDL

Answer 16

some interference (dark line around tooth)-early sign of pulpal pathology

Question 17

normal alveolar crest height

Answer 17

< 2mm from the CEJ

Question 18

Chronic Pulpal Inflammatory Disease/Rarefying Osteitis

Answer 18

NON-vital tooth—at apex, caused by pulp death; radiolucencies hard to differentiate

Question 19

Sclerosing/condensing osteitis OR Chronic Pulpal Inflammatory Disease/Rarefying Osteitis

Answer 19

earliest sign of pulpal patho; abcess, granuloma, or cyst

Question 20

Abcess vs granuloma vs cyst

Answer 20

cannot differentiate radiographically-use histo

Question 21

epicenter of lesion

Answer 21

at the apex of the root/tooth for a cyst

Question 22

cyst

Answer 22

epithelial lined pathologic cavity

Question 23

fibrous healing defect

Answer 23

requires no treatment, healed with scar tissue instead of bone; appears dark

Question 24

radiopacity with no associated radiolucency

Answer 24

idiopathic osteoslcerosis-tooth is vital; just an area of dense bone

Question 25

hypercementosis

Answer 25

VITAL tooth; excess cementum; can see original root-see outline of root in cementum blob

Question 26

idiopathic osteosclerosis

Answer 26

tooth is vital; area of dense bone with no associated radiolucency

Question 27

excess cementum

Answer 27

hypercementosis-tooth trying to stabilize itself, tooth is vital; looks like dentin and cementum are one big thing but different calcification

Question 28

Periapical Osteo Dysplasia (Know this!)

Answer 28

Multiple; well defined periapical radiolucencies associated with VITAL mandibular ant teeth-Radiopacity island in radiolucency!

Question 29

well defined periapical radiolucencies associated with vital teeth- Radiopacity island

Answer 29

POD

Question 30

widespread POD

Answer 30

Florid Cemento osseous Dysplasia (FCOD)

Question 31

FCOD

Answer 31

Florid Cemento-osseous Dysplasia which is widespread PCD; lamina dura may be lost

Question 32

sclerosing osteitis

Answer 32

lamina dura lost, PDL widened, no radiolucency

Question 33

cementoblastoma

Answer 33

Vital tooth, apex of root obliterated by lesion-radiopaque lesion

Question 34

apex of root obliterated-radiopaque vital lesion

Answer 34

Cementoblastoma

Question 35

must be visible in order to detect incipient (early) caries

Answer 35

the interproximal spaces-if, not the radiograph is non-diagnostic

Question 36

Comparison of dentin and enamel radiographically

Answer 36

dentin is darker and enamel is more white b/c more radiopaque

Question 37

normal alveolar crest should be ____ from the CEJs

Answer 37

<2mm

Question 38

lamina dura lost at apex-diffuse borders; seen more lateral to apex

Answer 38

periapical abscess

Question 39

radiolucency is more circumscribed (around the apex and well defined)

Answer 39

periapical granuloma (aka radicular cyst) --these are non vital

Question 40

periapical cyst

Answer 40

well circumscribed, sclerotic border

Question 41

diffuse radiopacity at apex separated by widened pdl space

Answer 41

sclerosing osteitis (condensing)-Tooth is non vital

Question 42

vital tooth lesions (pulp is not dead)

Answer 42

dense bone island (idiopathic osteosclerosis) Hypercementosis Periapical cemental dysplacia Cementoblastoma

Question 43

POD vital or nah

Answer 43

yes vital, periapical cemental dysplacia-well defined periapical radioluciencies with vital mand ant teeth

Question 44

radiopacity deposits within the radiolucency and may appear crescent shaped-lamina dura may disappear at the apex

Answer 44

FCOD, Periapical cemental dysplasia

Question 45

Vital tooth, apex of root obliterated by lesion

Answer 45

cementoblastoma-true cementoma

Question 46

inflammation of the gingival mucosa-NOT evident radiographically

Answer 46

gingivitis

Question 47

inflammation of the supporting bone-first radiographic evidence is at the alveolar crest; local or systemic etiology

Answer 47

periodontitis

Question 48

periodontitis

Answer 48

inflammation of the supporting bone-first radiographic evidence is at the alveolar crest; local or systemic etiology

Question 49

gingivitis

Answer 49

inflammation of the gingival mucosa-NOT evident radiographically

Question 50

Spur type calculus

Answer 50

small spur shape radiopacity sticking of tooth