2013-2017 Pt. 2 Flashcards
What feature has the best stability
Curve of spee
T/F, Effective dose does not use tissue weighting factor
False! It does use tissue weighting factor of equivalent doses
What does the international association of radiology use when reporting radiation doses?
Effective dose
What does not increase when orthodontic treatment causes periodontal problem in patients with active periodontal disease?
Osteoblast
When does the mandible fuse?
6-9 months
In canine substitution, you don’t have to adjust what?
distal marginal ridge
What aspect makes it it hard to get a canine into class I
axial inclination of maxillary canine
What is the most common error in collecting data from cephs
Identification of landmark
What is the best way to prevent white spots according to the literature
low concentration of fluoride
What statistical analysis is used when you have 3 variables and you want to predict something
Regression
WHat causes the change of Austenitic to Martensitic?
thermal induced
How do you measure maximum opening?
Measure from incisal edge to incisal edge + overbite
Expansion in adult causes
Maxillary canine gingival recession
What is a benefit of TADs
Reduces the use of extraoral anchorage
What is the importance or role of Meckel’s cartilage
Intramembranous ossification of mandible lateral to Meckel’s cartilage
Muscle of mastication is innervated by what?
V3
Motor nerve comes from
V3
What nerve innervates muscles of facial expression
VII
Not V3
CRE doesn’t evaluate what measurement?
Overbite
What does WITS use for it’s measurement
Functional Occlusal plane
What is not found in hyalinized tissue?
Fibroblast?
or
Cementoblast?
What does happen in hyalinized tissue?
Undifferentiated mesenchyme changes to osteoclast and cementoclast
Who determines standard of care?
Court
Class III patient and you extract L4’s, what shouldn’t you be concerned about?
Supraeruption of U7’s
Where does resorption occur on maxilla?
Superior and anterior
What muscle protrudes the tongue?
Genioglossus
SARPE limitation
Coronoid process
Things to know about Twin Block
- Dentoalveolar and skeletal changes
2. Acrylic on incisal edges helps with less proclination of lower incisors
T/F, the orbicularis oris is not involved in smiling
True
What percentage of the Central incisor should be left as space for a lateral incisor
75%
The mucosa of the tongue is formed by which branchial arch?
1 and 3
When does the tongue form?
at 4 weeks
What nerve innervates the tongue and provides general sensory afferent signals
Anterior 2/3 - Lingual nerve of V3
Posterior 1/3 - Glossopharyngeal nerve (IX)
What nerve provides special sensory - taste to the tongue?
Anterior 2/3 - Chorda Tympani of VII (Facial)
Posterior 1/3 - Glossopharyn)geal Nerve (IX)
What nerve provides motor function to the tongue
XII (Hypoglossal)
Which nerve ends at 1/3 of anterior tongue?
Lingual nerve
Which cyst is associated with a congenitally missing tooth but arises from dental lamina?
OKC/Primordial cyst
What percentage of Class II patients have improvement after Phase I treatment
75%
What is the dental movement when the force of a HPHG is above the COR?
distal root tip
For tip on the crown of a tooth, where is the COR?
1/3 from the apex
T/F, Measuring papilla levels to bone is predictable. It should be 5 mm from contact to alveolar crest of bone
True
True
T/F, There is an inversely proportional distance between contact and bone. In other words, the greater the distance, the smaller the chance of papilla
True
If you do apexification on an immature tooth, it is more prone for what compared to a normal mature tooth?
Fracture
What is the ideal concentration for fluoride mouth wash?
0.05%
What biological markers are not associated with peridodontal and fibroblast breakdown
Neocytokines
What things are related to succesful TAD placement
Direction of force
Amount of force
Cortical bone thickness
What two things increase primary stability of a TAD
Thickness of cortical bone
Width or diameter of the TAD
Which is not acceptable record to evaluate an ortho patient with perio problems?
PSR
Periodontal Screening and Recording
WHen is somatic growth the greatest?
From conception to birth
In the functional matrix growth theory, what causes translation?
Capsular matrix
Which does not normally occur in the skull?
Synostosis
Where is secondary cartilage found?
Condyle
What is important in the START of the development of puberty (sexual characteristics?)
Hypothalamus
Lip bumper has what effects primarily?
Resolve incisor crowding
How does the nasal floor form?
Palatine process of maxilla and the horizontal plate of the palatine bone
What percentage of open bites correct when found in early mixed dentition?
80%
Stability of open bites treated surgically?
82%
75% when treated nonsurgically
If tetracycline staining is used after implant placement to see what kind of bone is at the interface, what would you see?
At 3 months later, you would see lamellar with high turn over.
However, if there is answer choice RIGID IN BONE, it’s this
Which muscle is the agonist of the masseter
Medial pterygoid (works with masseter to create a powerful sling as elevator)
T/F, Wormian bones are found in cleidocranial dysplasia?
T
A patient has multiple ulcers, lymphadenopathy, and a fever? what does she have
Primary herpetic stomatitis
Fibers that control the stability of tooth movement?
supracrestal
What part of the brainstem does the trigeminal nerve come from?
lateral aspect of the Pons
Orbit remodeling is most affected by what bone?
Lacrimal
In Crouzon’s, what is not true?
a. Hypertelorism
b. Craniosysostosis
c. Midface deficiency
d. Most sutural closure at 7-8 years
e. surgery needed at a young age
D. most sutural closure at 7-8 years is not true
