caries radiographs

Question 1

what is cervical burnout?

Answer 1

area of low x=ray absorption around mesial/distal aspects of tooth

between enamel and adjacent crest of alveolar ridge

may mimic root surface caries

seen on molars and premolars

Question 2

you notice 4/5mm pocketing. which radiograph would you take?

Answer 2

horizontal bitewings

Question 3

pocket depths exceed 6mm which radiograph should be used

Answer 3

vertical bitewings

Question 4

should a patient have irregularities in periodontium pocket depths, which radiograph should be taken along with bitewings?

Answer 4

supplement bitewings with periapical radiographs of abnormal teeth

Question 5

which are good markers for identifying stages of dentition from radiographs?

Answer 5

lower molars. 1 permanent molar at 6

2pm at 12 and 3pm at 18

Question 6

which teeth are typically supernumerary or absent?

Answer 6

lateral incisors

second premolars

third molars

Question 7

how may secondary caries be seen in a radiograph, any further investigation?

Answer 7

A radiolucent band around a restoration

use blunt perio probe to check

Question 8

what may a large apical radiolucency suggest?

Answer 8

cyst post root treatment

requires removal