Selection Criteria Flashcards
Which extra oral views may we take?
Oblique laterals
DPT
Lateral ceph
Which intra oral views can we take?
Periapical
Bitewing
Occlusal
What are the main indications for bite wings?
Detection of interproximal caries
Monitoring profession of caries
Assess existing restorations
Assessment of periodontal pocket depths up to 6mm using vertical bite wings
By how much does the diagnostic threshold for caries detection increase by when using bite wings?
4 fold
How much demineralisation is needed before You can see caries radiologically?
50% demineralisation is needed
T/F caries needs a low Kv to detect contrast?
T
T/F for assessment of periodontal needs, you need higher Kv?
T since need less contrast
What are the two methods of taking Periapical radiographs?
Long cone paralleling and bisecting angle
Which method of Periapical technique should be used?
LONG CONE PARALELLING
Name the occlusal radiographs available
Upper standard Upper oblique occlusal Lower 90 occlusal Lower 45 occlusal Lower oblique occlusal
Which two occlusals are forms of large bisected angle Periapical?
Upper standard and lower 45
When would you take an upper standard occlusal?
Unable to take a Periapical
Trauma
Palatal pathology
2nd view to aid localisation
When would you take an upper oblique occlusal?
Unable to take a bite wing or pa
Provide view from diff angle
When would you take a lower 90 degree occlusal?
Detect for salivary calculus
Fracture of ant mandible
Gucci lingual expansion or cortical bone
When would you take a lower 45?
Unable to tolerate Periapical
Lesion too large to visualise on intra oral film
Anterior fracture of mandible
When would you take a lower oblique occlusal?
Cannot tolerate PAGE
Imaging SM gland
When do you radiograph in endo?
Pre op
Prior to obturation
Post obturation
When should you follow up X-rays in Endodontically treated teeth?
1 year on
4 years on
When should you take a PA in advanced restorative dentistry?
Prior to placing a crown or using the tooth as an abutment
What shout all X-ray’s be taken with the aid of?
Beam aiming devices and X-ray holders
When would we take a DPT?
Prior to GA Unerupted tooth in place or size too large that IO film could not be used Prior to dental clearance Ortho assessment Trauma Implant Perio
T/F DPT films should be re taken at timely intervals?
F
Only taken in the presence of specific clinical signs and symptoms
What are the purposes of lateral Cephs?
Assess skeletal pattern
Angularity of incisors
Orthognathic planning
When are CBCT’s indicated?
Implants
Fracture assessments
when would US be used?
Neck lump
Salivary stone
When would MRI be used?
Soft tissue lesions
TMJ
When is nuclear medicine used?
Rarely
TMJ hyperplasia
What angle is the upper oblique taken at?
65 degrees to the horizontal plane
What should you use with an upper oblique?
Thyroid collar
Which lower occlusal is the head tilted back?
Lower 90
Which would you use for salivary caliculi?
Lower 90
When would you use a lower oblique occlusal?
SM gland
How do you position the head in the oblique lateral?
Rotate head towards side of interest this is so that the Contralateral ramus is out of the way
Need to raise the chin
What is the name for the space between the back of the ramus and the cervical spine?
The radiographic keyhole
When is the radiographic key hole of biggest interest?
When taking lateral obliques
What do you need for an oblique lateral?
Cassettes
When would we take a peri apical?
Root or pulpal path
Extent of coronal pathology in anterior teeth
Assessment of apical pathology
Assessment of local anatomy
When would you take radiographs in perio?
To assess bone loss and furcation involvement
Determine the presence of any causative factors
Assist in treatment planning
Evaluation of treatment
What are the guidelines for radiography in perio?
Uniform pocketing of less than 6mm or no recession: horizontal
Pocketing of more than 6mm: vertical bitewing polls or minus periaplcals
Irregular pocketing: periaplcals
Periapical for perio endo
Can consider DPT
What percentage of adults have at least one crown?
36%
What percentage of adults have more than 6 crowns?
5%
What is the average number of fillings ?
7
T/F bite wings are not recommended in the heavily restored dentition?
F
For caries assessment
