Selection Criteria

Question 1

When to take radiograph?

Answer 1

Pathology
Root/pulpal morphology
Teeth present?
Screening for caries
Localisation of teeth/ foreign bodies

Question 2

Bitewing indications

Answer 2

Detection of caries
Monitoring caries progression
Assessment of existing restoration
Assessment of per

Question 3

BW caries

Answer 3

Assess for interdental
Posterior BWs inc yield of inter proximal caries X4
50% demineralisation required to visualise caries
Lower kV = better contrast
Caries always larger clinically

Question 4

Frequency of BW

Answer 4

Low
1: 12-18 m 2: 24m
Med
Annually
High 
6m

Question 5

Paeds

Answer 5

Only if necessary and..

5y, 8-9, 12-14. As 1-2 yrs after eruption of pre/molars

Question 6

Occlusal radiography types

Answer 6

Upper standard
Upper/lower oblique occlusal
Lower 45-90

Question 7

Selection criteria for perio

Answer 7

Utilise radiographs taken to assess caries
Require reproducibility to assess bone level changes
Diagnosis of perio depends on clinical examination

Question 8

Radiographs in perio disease

Answer 8

Evaluation of treatment
Determine presence of causative factors
Assess bone loss and furcations

Question 9

Guidelines

Answer 9

Uniform pocketing:
4-5mm, little recession, BPE3
Horizontal BW

Pocketing:
6+mm, BPE4
Vertical BW, +/- Paralleling PA

Irregular pocketing:
H/V BW, +/- Paralelling PA.

Question 10

Heavily restored dentition

Answer 10

need PA before preps

Baseline info

Question 11

Trauma

Answer 11

Need baseline radiograph - mandatory

Review at intervals

Question 12

Endo

Answer 12

Pre-op to determine CWL
Prior to condensation of GP
After obturation
Review: 1yr and 4yrs after completed

Question 13

Crown

Answer 13

Review before 2yrs and 10yrs post cementation

Question 14

DPT

Answer 14

Before clearance, many XLA
Prior to surgery
Ortho
Trauma
Perio is >6mm
Implant assessment