L222 Radiographs

Question 1

Percentage and CAL
Slight
Moderate
Severe

Answer 1

Slight: <20 1-2mm
Moderate: 21-49 3-4mm
Severe: >50 5mm or more

Question 2

Most important anatomical considerations

Answer 2

Maxillary sinus

Mental foramen

Question 3

Bone loss percentage

Answer 3

(CEJ-Crest -2 mm)/ (CEJ-Apex - 2mm)

Question 4

Using crestal lamina dura on radiographs

Answer 4

Integrity of crestal lamina dura is NOT an appropriate indicator

Question 5

Buccal and lingual craters can be found of ____ defects

Answer 5

Two walled defects

Question 6

Furcation bone loss

Answer 6

Sometimes gives false positive so you need to use furcation probe

Question 7

Size of PDL space

Answer 7

.4-1.5mm

Question 8

Thickened radicular lamina dura might indicate

Answer 8

Occlusal trauma

Question 9

Mandibular tori are generally located where

Answer 9

Premolar region

Question 10

Mental foramen location

Answer 10

Forward: distal of 1st premolar
Back: mesial of 1st molar

Question 11

Root proximity resulting in root loss

Answer 11

2.5mm

Question 12

Radiographic features of tooth (6)

Answer 12

Crestal lamina dura
Radicular lamina dura
Furcation
PDL space
Apex
CEJ