MF SUPERIMPOSITIONS Flashcards
How far apart should serial cephs be?
1 year
What two planes of the face are more closely parallel?
Palatal plane to Frankfort Horizontal
When does the ABO include 3rd molars?
When they replace 2nd molars
Not receive points in the DI index
IMPA <99
ABO does not use FMA. What to use instead?
Constructed gonion to menton
Does ABO grade OB?
No
What is the midline point on a PA ceph?
Menton
What is the midline point on a lateral ceph?
Opsithion
Most anterior part on the maxillary process by upper incisors?
Prosthion
Most common error for magnification of lateral cephs?
Patient to cassette (film) distance
Most common error for tracing lateral cephs?
Landmark ID
Implant studies for mandibular superimpositions. Most stable anatomic structures?
- Internal anatomy of symphysis
- Mandibular canal
- 3rd molar crypts
- Does not include the inferior border of the mandible
The primary AP structure for max superimposition is…
Anterior surface of the zygomatic process
Superimposition of cranial base (COPG) - register sella with best fit on…
- Cribiform plates
- Occiput
- Planum sphenoidale (Jugum sphenoidale)
- Greater wing of sphenoid
In ABO superimposition techniques is nasion used?
Nasion is not reliable anymore - no longer use SN superimposing at SN
