Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Endo - ABGD - Oral Board Review > Mock Oral Board > Flashcards

Mock Oral Board Flashcards

1
Q

A patient is referred to youf or “endodontic evaluation”. List all aspects of a proper and thorough diagnostic work-up, to include specific tests or procedures that could help determine an endodontic diagnosis. Consider all diagnostic categories and situations that might present.

A
  • Medical history
  • CC - Pain history
  • Dental history (previous treatment, trauma, etc.)
  • Clinical exam (soft tissue)
  • Clinical exam (hard tissue)
  • Restorability
  • Cold test
  • Heat test
  • EPT
  • Percussion test
  • Palpation
  • Periodontal probing
  • Swelling (character, location)
  • Mobility
  • Radiographs - multiple angles
  • Trace sinus tract
  • Biting test (selective pressure)
  • Test cavity
  • “Scratch” test
  • Transillumination
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

A patient presetns to sick call with a CC of: Intermittent lingering thermal sensitivity in LR quadrant. PT has normal response to percfussion & palpation. Probing depth WNL. No swelling. Normal response to EPT #28-31. Pain elicited to cold #31 which lasts for 2 minutes after removal of the stimulus. Periapical radiograph shows questionable widening of the PDL #30 mesial root. What is the patient’s pulpal and periapical diagnosis?

A

Symptomatic Irreversible Pulpitis #31

Normal periapex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

20 year old airman reports getting pain meds and amoxicillin from the UCC last night. Cold test and EPT: no response, percussion positive #29-31, palpation tenderness #30, radiolucency on M root apex, caries. What is the pulpal and periapical dx?

A
  • Necrotic Pulp
  • Symptomatic Apical Periodontitis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What % of Maxillary 1st molars have MB2?

A

77%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When doing endodontic access, what are your major objectives?

A
  • Straight line access to canal orifice/apical region
  • Conservation of tooth structure
  • Removal of pulp horns in anterior teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

List instrument choices to achieve straight line access…

A
  • Gates Glidden
  • Peeso Reamers
  • Endo Z bur
  • Rotary orifice shapers (ProTaper S1, S2)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A patient presented to you with swelling and tenderness in the lower right quadrant. Pt was seen downstairs in B100 and referred to perio for ext/implant. Perio suspected an endo-perio lesion and referred to you for eval. You find localized swelling and palpation tenderness in the buccal vestibule adjacent to #30. Perio probing of over 10mm in buccal furcation and also distobuccal with drainage upon probing. No sensitivity to percussion or pressure. No response to vitality testing. What are your pulpal and periapical diagnosis?

A
  • Necrotic Pulp
  • Chronic Apical Abscess
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A pt has pain isolated to tooth #14. Dx is symptomatic irreversible pulpitis with symptomatic apical periodontitis. Tooth was endodontically treated and symptoms resolved. Incidental finding is large unilocular radiolucency…

What is your #1 differential?

A

Antral Pseudocyst

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Regarding tooth and alveolar fractures, can you name any injuries where a RIGID splint is part of the recommended treatment protocol?

A

There are NONE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What type of luxation injury is this?

What are 3 possible treatment options for this?

A
  • Intrusive Luxation
    • Do nothing - monitor for spontaneous re-eruption
    • Orthodontically re-position tooth
    • Surgically re-position tooth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Under what conditions can a Cvek pulpotomy be performed?

A
  • Normal radiograph
  • No percussion sensitivity
  • Momentary response to therml stimuli
  • No spontaneous pain
  • No widespread inflammation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the goal of a Cvek pulpotomy?

A
  • Maintain vitailty of pulp
  • Allow root end development & root maturation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are 2 types of tertiary dentin and what is the cell origin for each?

A
  1. Reactionary - produced by original odontoblasts
  2. Reparative - produced by replacement odontoblasts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

List indications for root-end surgery (give at least 6)…

A
  • No healing following NS RETX
  • Persistent pain following NS RETX
  • Re-treatment is not possible Post or other obstruction, Anatomic issues
  • Previous misadventure
  • Inability to debride apical canal space
  • Gross overextension of material or instrument
  • Performation
  • Biopsy is needed
  • Progressive resorption
  • Patietn refuses non-surgical re-treatment
  • Cortical trephination is required
  • Exploratory procedure (assess fracture/resorption)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

List situations where you would use MTA…

A
  • Root end filling
  • Perforation
  • Apexificaiton (creation of root-end barrier)
  • Pulp cap
  • Pulpotomy (seal over revascularization/regeneration attempt)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What may cause an apex locator to not work properly?

A
  • Improper contact with lip or file
  • Excess fluid, blood, or purulence in chamber or canal
  • Contact with metal restoration
  • Small file in large apical foramen
  • No “patency” established
  • Unusual constriction anatomy
  • Calcifid canal space or unusual canal configuraiton
  • Perforation
  • Low battery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the instrument and what common misadventure can happen with it?

A
  • Lentulo spiral
  • Handpiece in reverse can cause it to get stuck in tooth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the 5 categories of luxation injuries?

Which has the owrst prognosis?

A
  • Concussion
  • Subluxation
  • Exgtrusive luxation
  • Lateral luxation
  • Intrusive luxation
  • Worst pronosis
    • intrusive luxation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Regarding local anestehsia, which fibers are most difficult to anesthetize?

A

C fibers

20
Q

You administer two IAN blocks with 2% lidocaine with 1:100,000 epi. There is a positive lip sign, but the patient indicates that a cold challenge still elicits considerable pain. What are possible srategies to allow initiation of endo treatment? Give at least 6…

A
  • Change anesthetics
  • Use PDL injections
  • Use intraosseous injection
  • Use B infiltration with Septocaine
  • Use intrapulpal injection
  • Infiltrate in retromolar pad, mylohyoid, B vestibule
  • Sedation (oral, nitrous, IVCS)
  • Administer Ibuprofen gel and wait 20 minutes
  • Defer treatmetn and presciibe pre-op Ibuprofen
  • Patient “management” techniques:
    • Education
    • Explanation
    • Hypnosis
    • Acupuncture
21
Q

What percentage of mandibular second molars have a C shaped canal configuration?

A

3%

22
Q

Observe ther radiolucency on the picture…All endodontic tests are performed correctly and the tooth has a normal pulp and normal periapex. Histologically, there is no involvement of the pulp or canal spaces. What is this entity most likely to be?

A

Invasvie Cervical Resorption

23
Q

Give both clinical and radiographic parameters that describe the generally-accepted location for where root canal preparation and obturation should terminate…

A
  • At the minor diameter / apical constriction
  • 0.5 - 1.0 mm short of the radiographic apex
24
Q

What are the main prognostic factors for a mature tooth with a horizontal root fracture?

A
  • Severity of injury (amount of displacement)
  • Ability to closely re-approximate the segments
  • Location of fracture (apical third is most favorable)
25
Q

What type of obturation material is this likely?

A

Silver points

26
Q

What’s the best way to attempt regainign workig length?

A

Precurved hand files

27
Q

What is going on here and whare are some ways to prevent this? Give at least 6…

A
  • Ledging
    • Proper straight-line access
    • Early coronal flaring
    • Crown-down
    • Frequent re-capitulation
    • Establish proper WL prior to instrumentation
    • Use files with non-cutting tips (Flex-R, Gates)
    • Balanced force technique (Roane)
    • Don’t allow rotary NiTi files to rotate for excessive time
    • Don’t skip file sizes
    • USe a lubricant
    • Know your anatomy (which canals are more likely to have curvatures)
    • Multiple angles with pre-op radiogrpahs
    • Use copious and frequent irrigation
28
Q

What is going on here?

A

Strip perforation

29
Q

What is going on here?

A
  • Apical Zip
  • A “zip” is formed when the working length is fully maintained and larger instruments are used
30
Q

What is going on here?

A

Apical transportation

31
Q

What is the difference between Apexogenesis and Apexification?

A
  • Apexogenesis
    • Vital pulp
    • Open Apex
    • Goal to maintain pulp vitality
    • Encourage root maturation (root end closure and thickening of lateral walls)
    • Cvek Pulpotomy
  • Apexification
    • Necrotic Pulp
    • Open Apex
    • Goal to attain artificail apical barrier
    • Long term therapy with CaOH or TCP
32
Q

If a tooth has a necrotic pulp and culturing of the canal is performed, which of these represents the organisms that are likely to be present in the highest percentage?

A
  • Obligate anaerobic bacteria
33
Q

What is going on in this radiograph?

What is the likely result of endo diagnostic tests?

Is the pulp likely vital or non-vital?

Should routine endo therapy be performed?

A
  • Calcific metamorphosis (aka Pulp canal obliteration)
  • Decreased or absent response to vitality tests
  • Vital (only 16% necrotic)
  • No…routine endo not indicated
34
Q

What is going on here?

What are the 5 categories of luxation injuries?

What has the worst prognosis?

A
  • Lateral luxation *picture
  • Concussion
  • Subluxation
  • Extrusive luxation
  • Intrusive luxation (worst)
35
Q

You’re going to retreat #31, which has the dx of previously treated/symptomatic periapical periodontitis. What are some reasons for endodontic failure? Name 6…

A
  • Perforation
  • Obturation Incomplete
  • Overfill
  • Root canal missed
  • Periodontal reasons
  • Another tooth
  • Split tooth
  • Trauma
36
Q

List some ways to prevent instrument separation…

A
  • Adequate coronal/radicular access
  • Regularly insepct files for fatigue/twisting
  • Discard small files regularly (#6/8/10 - one use)
  • Light apical pressure/don’t bind file
  • Caution in curved canals
  • Regular irrigation/use of lubricant
  • Rotary at correct RPM
  • Clean files
37
Q

List benefits and actions of CaOH

A
  • Disinfectans canal; hydrolyze LPS
  • Dissolves tissue
  • Changes the environment
  • Helps control intracanal exudate (“weeping canal”)
  • Used to prevent or reduce resorptions
  • May stimulate formation of dentin bridge
  • May stimulate formation of apical barrier
38
Q

List situations where CaOH is utilized…

A
  • Diagnostic aid
  • Inter-appontment intracanal medicament
  • Inter-appointment space-filler
  • Pulp capping agent
  • Apexogenesis (pulpotomy)
  • Apexification (stimulate formation of dentin bridge)
  • Matrix for perforation repair or MTA apical barrier
  • Long-term medicament following trauma
39
Q

List indications for multi-appointment endo…

A
  • Necrotic pulp with apical abscess
  • Endo retreat
  • Acute apical symptoms
  • Weeping canal…unable to dry
  • Sinus tract
40
Q

List methods to improve irrigation penetration…

A
  • Crown down technique
  • Increased file size (Size #40)
  • Increased taper (.04 taper)
  • Narrow gauge, side-vented needle (Maxi-Probe)
  • Irrigation adjuncts (Endosonics, EndoActivator, Endovac, PiezoFlow)
41
Q

Which irrigate removes the organic portion of the smear layer from the root canal system?

The inorganic portion?

Which is best to rid canals of E.faecalis?

A
  • 8% NaOCl (organic portion)
  • 17% EDTA (inorganic portion)
  • 2% Chlorohexidine (Consepsis)
42
Q

What is the top bracket pointing to?

What is its purpose?

A

Radial Land

Keep the file centered within the canal

43
Q

What file type is shown in the picture on the right?

What does the colored band at the top closest to the shank denote?

What is its purpose?

A
  • Rotary NiTi - Sybron Endo K3
  • Taper
  • File size and tip
44
Q

What file type is shown in the picture?

What do the black stripes designate?

What do the colored bands indicate?

A
  • Rotary NiTi - Profile GT (Tulsa Dental)
  • Taper (2 = 0.04, 3 = 0.06, 4 = 0.08, etc)
  • Colored band corresponds to the file size at the tip (yellow = 2-, blue = 30)
45
Q

What instrument is this?

What is it used for?

A
  • LN bur
  • Locating orifice of canals or troughing
46
Q

What type of file is this?

What is the size of this instrument at its tip?

A
  • # 1 Peeso Reamer
  • 0.70 mm or #70 file size
47
Q

What types of instruments are on the left?

Describe the relative size at the tip…

What’s its advantage for coronal flaring?

A
  • # 3 Gates Glidden
  • 0.90 mm or #90 size file
  • Safe ended tip

Endo - ABGD - Oral Board Review (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions