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;
33 Cards in this Set
- Front
- Back
|
Max relocation is primary or secondary displacement?
|
Secondary: influenced by something else
|
|
|
How many mandibles are we born with?
|
2.. halves anyway
The two halves fuse within 1 year. |
|
|
The condyle is a growth __
|
Site
|
|
|
What Mandibular feature grows in a similar fashion to the Maxillary tuberosity?
|
Lingula - Lingual Tuberosity
Grows by apposition, and the jaw "juts" forward with time (protrudes). |
|
|
True or False: a genetic blueprint exists in the condyle.
|
False, this is an old idea
So is, "the Earth is flat," but we don't have to learn that. Anyway... |
|
|
The condyle lengthens in what two directions?
|
Upward and Backward
|
|
|
Despite the fact that the mandible is __, __'s Cartilage contributes to its growth initially
|
Intramembranous
Meckel's Cartilage |
|
|
What process is responsible for mandibular crowding?
Hint: __ of the incisors |
Uprighting of the incisors.
This occurs as the chin is remodelled throughout adulthood. |
|
|
What is NOT responsible for mandibular crowding?
|
The 3rds.
|
|
|
Mandibular growth is described by what Principle?
|
Expanding "V"
|
|
|
What two processes make up Remodelling?
|
Resorption (-)
Apposition (+) |
|
|
2ndary displacement of the Max results from expansion of what structure?
|
Sphenoid
|
|
|
Which sinus is present at birth?
|
Maxillary
Others rare. |
|
|
The periosteum and endosteum are __ fields.
|
Growth
|
|
|
The periosteum is primarily __
The endosteum is primarily __ |
Perio: appositional
Endo: absorptive |
|
|
What does the functional matrix control?
|
Bone growth
|
|
|
The mandible moves what directions for men?
|
Down and forward
|
|
|
The mandible moves what directions for women?
|
Down and back
|
|
|
How do mand incisors change in women as compared to men (age > 20yrs)?
|
Men: retroclined (upright)
Women: proclined |
|
|
What does time T1 represent?
|
Max/Mand 6's erupted to occlusion
|
|
|
Time T4 represents what?
|
2nd molars erupted to occlusion
|
|
|
Time T7 represents what?
|
Permanent dent. after pubertal growth (20-24 yrs.)
|
|
|
What is the growth differential for Class III's?
|
Mand. growth > 4.3 - 8.7mm
|
|
|
What is the growth differential for Class II's?
|
Max. growth > 0.7 - 7.0mm
|
|
|
During T4-T7 (adolescence) it is important to determine what general trend about a patient's growth?
|
Vertical or Horizontal "grower"
|
|
|
Occlusal relationships respond in what way to adverse growth?
|
Occlusion will compensate for adverse growth.
|
|
|
Early treatment may modify growth, particularly in which arch?
|
Maxilla
|
|
|
What is "E Space" and why is it called this?
|
aka "Leeway Space"
Named for tooth #E |
|
|
What is incisor liability?
|
Permanent incisors are wider than the primaries, so more space is needed.
|
|
|
Most mandibular muscles attach to what structure affecting the airway?
|
The hyoid
|
|
|
What is a lip bumper, what is its job?
|
It is a plastic appliance that applies outward pressure on the soft tissue (the lips).
Removes muscle action on mand centrals, which makes space. |
|
|
What type of appliance would be recommended for treatment of maxillary hypoplasia?
|
Reverse pull headgear
|
|
|
Overall, it is easier to manipulate the __ than the __ arch.
|
Maxillary >> Mandibular
Chin cups may be attempted on mand hyperplasia. |
