Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
What is the Mach Band Effect?
|
￭￭￭￭
￭￭￭￭ ￭￭￭￭ Concentrate on one Junction and the others become grayer |
|
|
What forms the Lamina Dura?
|
The x-rays passing through the socket wall at a tangent to the root surface.
Not more mineralised bone |
|
|
Teeth shown on a Bitewing
|
Distal of 4 to Mesial of 8
|
|
|
Pre-Extraction Radiograph
Indications (5) |
History of XLA Problems
Unusual Anatomy Relevant PMH Orthodontic Treatment Reasons Tooth located to important anatomical structures |
|
|
Alvogel
Radiolucent/opaque? |
Radio-opaque
|
|
|
Three ways of describing Cyst Shape
|
Uni-locular
Multi-locular [Pseudo-locular] |
|
|
Internal structure of cysts on radiographs
|
Mandibular = black
Maxillary = Black, may be more opaque relative to max. sinus due to liquid contents White calcified flecks may be present |
|
|
Location of tooth in dentigerous cysts
|
Central with wall arising + continuous with ACJ
|
|
|
Gorlin-Goltz
3 Indications |
Multiple Keratocysts
Basal Cell Carcinomas on skin Hypotelorism (Abnormally close eyes) |
|
|
Keratocysts + Ameloblastoma
Radiological difference |
Ameloblastomas cause lateral/medial expansion
Keratocysts don't |
|
|
Treatment for Solitary Bone Cyst
|
None (Advise pt only) - may resolve spontaniously
|
|
|
Solitary Bone cyst radiological appearance
(3) |
Uni-locular lession
Well corticated margins Expands around teeth and other anatomical structures without displacement |
|
|
How many days of active bone loss is required before identifiable on a radiograph?
|
7-10
|
|
|
Radio-opaque lesion distal to 8
|
If corticated then cyst (dentigerous/ paradental)
If diffuse border then pericoronital bone loss |
|
|
Radiology
Appearance of Amelogenesis imperfecta |
Developing teeth show no enamel
|
|
|
Parallax Technique
If a tooth is palatially/lingually placed, does it move with or against the tube movement? |
With the tube
|
|
|
Radiology
3 Methods of localizing a structure? |
2 views at 90 degrees
Parallax Cone Beam Tomography (Or CT) |
