2018 Questions pt. 2 Flashcards
In what syndrome does diminished Neural crest cell migration affect the maxilla and mandible
Treacher Collins
A question about Crouzons asking what is not true
The sutures fuse at 7-8 years
Fibrous Dysplasia is not associated with what?
Premalignancy. It is rare if the lesions become cancerous and it’s usually related to hx of previous radiation therapy
What diagnostic tool is used for Perforated disc
Arthography
What diagnostic tool is used for degenerative TMJ
MRI (Might be CT??)
Diagnostic tool for condylar hyperplasia
Tc99
Most radiation for TMD
Tc99 (Medical CT not a choice but would be answer)
T/F questions: Diagnose hyperdivergent patient early and early treatment is indicated
T on both statements
What is Neocytokine not involved in?
- Does not increase during tooth movement
- Not found in gingival turnover
- Doesn’t affect gingival response and fibroblasts
What dentoalveolar affects do LLHA have?
Impaction of 2nd molars and maintains leeway space
How much folic acid decreases Cleft Lip/Palate? and by what percentage?
0.4mg folic acid
30% decrease
Early extraction of mandibular primary canine is acceptable in all situations except:
Correction of midline shift
Normal range of opening for adults
50 mm opening
12 mm lateral/protrusive
How do you determine the ideal amount of maxillary impaction
Lips at rest, measurement of lip to incisor. Normal is 2-3 mm so anything beyond that is amount for impaction
When treating Class II malocclusion, what mechanics should you use to prevent relapse?
Mechanics to decrease the SN-Occlusal plane angle or CCW rotation. Increasing the SN-Occlusal plane or have a CW rotation of the mandible, is more prone to relapse
*ABO Cast Radiograph Exam doesn’t evaluate what?
Overbite
If patient has a lateral shift, what is the first thing you do to diagnose?
Check midlines
- If midlines are shifted at rest and in occlusion, true skeletal or neuromuscular asymmetry
- If midlines are on at rest and shifted in occlusion, dental asymmetry functional shift
??Use flat occlusal plane splint if not clinically detectable
What is true about Lichen Planus
Pruitic Lesions
Question about RPHG
470 g below occlusal plane
Autotransplant tooth
1/2 root formation
Hypertelorism is associated with what?
Medfacial cleft or median cleft
What should be the inclination of the incisors relative to the occlusal plane when doing an anterior resin-bonded bridge?
Perpendicular
Where does the mandible form in relation to Meckel’s cartilage
Lateral to Meckel’s cartilage
Intramembranous ossification
T/F, The mandiblular archform is based on the maxilla
False, the maxilla archform is based on the mandible
Which is more contagious, HIV or Hep C
Hep C
T/F, Health care providers should be vaccinated for Hep B and Hep C
False
Hep C has no Vaccine
What is the most common chronic bloodborne pathogen in the US
Hep C
How can you prevent growth in condylar hyperplasia?
High Condylectomy
T/F, The Parotid gland secretes 60% saliva
False, It only contributes 20%
Describe what limits the amount of expansion in SARPE
Coronoid process
What does not derive from neural crest cells
Ameloblasts
What doesn’t open in RPE
Premaxillary suture
CBCT is not accurate in assessing what?
Bone thickness, but it is good for height
What is not correct about OKC
Occurs most likely in the maxilla
Ankylosis may occur for all of the reasons except?
Traumatic occlusion
Which correction is the most stable post-treatment
Curve of Spee
Why does orthodontic treatment cause perio problems in active disease?
Because osteoblasts do not increase and cannot function in an inflammatory environment
HOw to you measure maximum opening?
Incisal edge to Incisal edge then add the OB
What is affected more if a 9 year old is injected with growth hormone, maxilla or mandible
Mandible
What is not characteristic of Acromegaly
It is not genetically inherited
What is the most anterior inferior point on foramen magnum
Basion
