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Oral Surgery > Midterm > Flashcards

Midterm Flashcards

1
Q

Two congenital syndromes that cause deformities

A

Ectodermal dysplasia

Treacher Collin’s

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2
Q

3 ways to treat skeletal malocclusion

A

Orthognathic surgery
Growth redirection
Orthodontic camouflage

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3
Q

Problems with ortho camouflage

A

Possibly less stable
Possibly less esthetic
Perio compromise

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4
Q

Recent Innovation that has increased envelope?

A

TADs

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5
Q

What costs more when doing double jaw surgery

A

Hospital bill is $35,000, surgeon fee is $6,500

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6
Q

How to determine vertical position when doing jaw surgery

A

K wire placed in nasion

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7
Q

Pros/cons of BSSO

A

Pro:
Can advance or set back
Stable rigid internal fixation possible

Con:
Potential for alveolar nerve injury
Not good for anterior open bite (counterclockwise rotation)

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8
Q

What does BSSO stand for

A

Bilateral sagittal split ramus osteotomy

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9
Q

Pros of LeFort I

A 
Move max in all planes
Stable treatment of anterior open bite
Allow segmentation of maxilla
Low morbidity
Internal rigid fixation possible
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10
Q

What is diet like after lefort

A

3 days liquid only, soft for 6 weeks

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11
Q

Why is surgery for cleft patients more difficult

A 
Large max AP deficiencies
Scar tissue
VP incompetence
Vascular compromise
Palatal and nasolabial fistulas
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12
Q

Common teeth for cleft patients to lack

A

Lateral incisors

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13
Q

Large AP moves often require what

A

Distraction

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14
Q

Orthognathic surgery pros and 1 con

A 
Limited morbidity
Short hospital stay
Rarely need wiring
Intraoral incisions
Satisfaction very high

Possible nerve damage

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15
Q

Week where facial structures fuse

A

7

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16
Q

Failure of Which processes to fuse is the cause of cleft lip/palate

A

Median nasal and maxillary

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17
Q

Highest race for cleft lip

A

Asian

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18
Q

Males are more likely to have cleft _, females more likely to have _

A

Cleft lip

Isolated cleft palate

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19
Q

_ often occurs with cleft

A

Middle ear disease

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20
Q

Rule of tens

A

10 weeks
10 lbs
Hemoglobin > 10
WBC < 10

21
Q

When to close soft tissue of palate?

Why?

A

12 months

Speech

22
Q

Velopharyngeal flap problems can lead to what

A

Nasal speech
Mouth breathing
OSA
Complications during intubation for surgery

23
Q

Why do an alveolar bone graft for cleft palate pts

A 
Continuous arch
Support for adjacent teeth
Bone for canine
Support nose
Close fistula
24
Q

Most common time to do alveolar bone graft in cleft patient

A

Mixed dentition

25
Q

Impacted vs unerupted

A

Unerupted is not breaking through mucosa. Impacted is not erupting within expected developmental time period.

26
Q

4 theories about impacted 3rds

A

Mesial and distal growth difference
Inadequate arch
Dental dev behind skeletal dev
Obstructed by cyst, tumor, supernumerary tooth

27
Q

Winter’s classification of 3rds

A
  1. Mesioangular (easiest)
  2. Distoangular (hardest)
  3. Horizontal (hard)
  4. Vertical (easy)
28
Q

Order of prevalence of winters class for mand and max

A 
Mand:
Mesial
Vertical
Distal
Horizontal
Max:
Vertical
Distal
Mesial
Horizontal
29
Q

Therapeutic vs prophylactic

A

Therapeutic - treat active disease

Prophylactic - prevent future disease

30
Q

Indications for removal

A 
C PCP FLOOR PP
Caries
Path
Crowding
Perio
Fracture
Lack of attached gingiva
Ortho
Orthognathic surgery
Resorption
Pericoronitis
Pain
31
Q

Why is it better to get thirds out when young

A

Healing is faster

Surgery is easier

32
Q

Where is no mans land on mandibular 3rds

A

Distolingual to mandibular 3rd. Can get the nerve

33
Q

Snap or crack means what

A

A root has failed until proven otherwise

34
Q

6 basic surgical principles

A 
Suction, lighting, soft tissue reflection
Pathway for removal
Controlled force
Sterile techniques
Thorough debridement
Adequate closure
35
Q

What to do if there is a sinus perf

A 
Antibiotic
Decongestant
Afrin
Written and verbal instructions
Suture tight
Follow up
36
Q

When does post op osteomyelitis happen

A

Smokers
Long wound healing
Immunocompromised

37
Q

Direct vs indirect injury

A

Direct: where you’re hit
Indirect: opposite side

38
Q

Step deformity:

A

Feel edge of mandible for a step fracture

39
Q

Impacted 3rds lead to what type of fracture

A

Angle

40
Q

Which injury to teeth have worst prognosis

A

Intruded

41
Q

Splinting for too long causes what?

How long to splint avulsed tooth

A

Resorption and ankylosis

7-10 days

42
Q

Formula for saline

A

8 oz water and 1/3 tsp salt

43
Q

Why give doxycycline

A

Avulsed <2 hours, open apex, enhances revascularization

44
Q

Why is it better to rupture a vein than an artery

A

Pressure can stop venous bleeding, won’t stop arterial

45
Q

Lip damage, first suture?

A

Vermilion border. Step is noticeable

46
Q

Types of fractures

A

Greenstick (partial)
Simple (one line)
Comminuted (multiple fractured pieces)
Compound (open)

47
Q

4 principles of fracture management

A

Reduction
Stabilization
Immobilization
Prevent infection

48
Q

Open vs closed reduction

A

Closed is no surgery, just using wires to perform MMF

Open is surgery to place plate over fracture to hold parts together

Oral Surgery (2 decks)

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