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Endodontics II > Lecture 4: Iatrogenic Misadventures & their Sequelae > Flashcards

Lecture 4: Iatrogenic Misadventures & their Sequelae Flashcards

1
Q

Iatrogenic errors (our bad) should be largely _____ with education, focus, care and experience

A

preventable

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1
Q

What is an iatrogenic error?

A

when we make a mistake that causes a problem in the patient

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2
Q

______ always beats ______

A

prevention; repair

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3
Q

What is the MOST important key to success and prevention of predictable errors/incidents?

A

intelligent case selection

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4
Q

List the components of intelligent case selection: (7)

A
  1. honest appraisal of current skills/experience levels
  2. thorough knowledge of morphology
  3. realistic appraisal of shaping objectives
  4. proper straight-line access; good technique
  5. magnification/lighting/specialized equipment and supplies
  6. time available to do a decent job
  7. patient able to cooperate
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5
Q

If you can’t look at the case and be ____ of an ____ result in your hands, you are honor bound to refer the case to the appropriate specialist.

A

certain; excellent

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6
Q

In order to prevent iatrogenic error, always start with proper:

A

case presentation

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7
Q

Proper case presentation includes presentation of treatment options including the:

A

risks vs. benefits

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8
Q

T/F: You should provide an honest explanation of ALL possible misadventures BEFORE treatment is started (and use non-technical terms)

A

true

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9
Q

Destroys our credibility and voids the consent and your permission to proceed. Ultimately creates distrust & additional liability:

A

Explaining mishaps AFTER they occur

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10
Q

Murphy’s Lesser known laws as applied to endodontics explains:

“The BIGGEST problems ALWAYS occur when you have the….”

A

LEAST time to deal with them

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11
Q

Iatrogenic misadventures are errors of both:

A

omission & commission

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12
Q

Iatrogenic misadventures (errors of both omission & commission) include: (7)

A
  1. wrong tooth (commission)
  2. missed canals (omission)
  3. separated instrument
  4. lodging , blockage, & transportation (zipping) apical perforation
  5. blow outs
  6. short & long fills
  7. perforations & strip-perfs
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13
Q

Often becomes a prelude to an expensive tour of our court system:

A

Wrong tooth entry

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14
Q

In regards to wrong tooth entry, it is always:

A

your fault & there is no excuse

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15
Q

What is the “procedure” if you treat the wrong tooth?

A
  1. Leave room and compose yourself
  2. Plan on free work
  3. Compensate the patient.. or his attorney
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16
Q

What is the MOST important part when you’ve treated the wrong tooth?

A

TAKE RESPONSIBILITY & do the right thing

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17
Q

Describe the treatment & payment plan for the iatrogenic error of working on the wrong tooth:

A
  1. RCT the right tooth at no cost for good will
  2. you pay for the crown on the wrong tooth
  3. you may also pay for the crown on the right tooth
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18
Q

Prevention is always better, cheaper, & faster than:

A

remediation

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19
Q

Missing a canal will guarantee:

A

failure

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20
Q

If you miss a canal you should:

A

fix it now or pay to have it fixed (+new crowns)

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21
Q

The “Bulls Eye” on a radiograph signifies:

A

4th root

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22
Q

The 4th root (bulls eye) is especially found in:

A

native Americans and asian populations

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23
Q

The Bulls eye is the _____ that exits coronal portion of tooth in a lingual direction and often curves abruptly back to the facial- difficult to treat

A

DL root

24
Q

If you say you’ve never separated af file, you simple haven’t done much endo. Proceed with:

A

care & prevent

25
Q

4 approaches when prevention of file separation fails:

A
  1. REMOVE the instrument & refer
  2. BYPASS the instrument
  3. APICAL SURGERY & RETROFILL
  4. TE & alternate treatment option
26
Q

For file separation, treatment decision & prognosis depend on:

A
  1. The location of the separated instrument (deep in canal or around curve very questionable)
  2. If the canal has been or can be adequately cleaned & shaped, disinfected and filled
  3. How much of the tooth will be destroyed to attempt to remove the separated file
  4. What is the best for the patient and the tooth
27
Q

A file separation is serious, difficult, and constitutes a ____ situation in most cases

A

Referral

28
Q

With a file separation, often the more you do to fix the problem:

A

the worse it gets

29
Q

T/F: Rarely does it make sense to tell the patient of a separated file at the time of the problem. Fill, then wait and see if it will do okay without truther intervention.

A

true

30
Q

In what situations should you not tell the patient that a file has separated in their canal?

A
  1. if canal is clean
  2. if its not long or short
  3. if you can follow the patient
31
Q

T/F: Missing a canal will guarantee a failure

A

True

32
Q

In what situation is it easy to miss a whole root?

A

4th DL root (Bulls Eye)

33
Q

T/F: File separation is a serious and difficult problem but rarely constitutes a referral situation in most cases

A

False- constitutes a referral situation in most cases

34
Q

T/F: Rarely does it make sense to tell the patient of the file separation at the time

A

True

35
Q

Plan A for a BLOW OUT:

A

Re-establish a new apical stop within the root

36
Q

Anemic and short fills are ____ of a problem than a blow out

A

less

37
Q

In regards to a long fill, there is no good:

A

non-surgical RCT option

because you cannot predictable retrieve GP beyond apex

38
Q

What are the MOTHER of all iatrogenic misadventures?

(most damaging to prognosis and the most difficult to repair)

A

perforations

39
Q

What is the best solution for a perforation?

A

prevention

40
Q

What is the most common iatrogenic injury at UMKC?

A

perforation

41
Q

Common causes of perforations include:

A
  1. failure to recognize the angulation of long axes of the tooth
  2. failure to accurately measure and stay short of the furcation
  3. failure to remove adequate extra-coronal restoration in order to clearly visualize pulpal landmarks
  4. spatial disorientation with inadequate access
42
Q

What is the sequence for dealing with perforation?

A
  1. Disclosure & consent
  2. Recognition
  3. Confirmation
  4. Notification of patient
  5. Control hemorrhage
  6. Assessment
  7. Treatment & follow-up
43
Q

What are some clues that help to recognize perforation?

A
  1. unexpected hemorrhage
  2. no mark at 7 mm on bur
  3. sudden (loose) drop-through
  4. unusual file angle
44
Q

T/F: Pain is a reliable clue for perforation

A

false

45
Q

With a perforation, to what ratio should you dilute your NaOCl?

A

10:1

46
Q

Perforation prognosis depends on:

A
  1. extent (smaller the better < 1mm)
  2. location (closer to attachment = worse)
  3. timing of repair (immediate = best chance)
47
Q

Why should you IMMEDIATELY repair a perforation?

A

Infection & loss of bone occur very rapidly = loss of matrix = difficultly of repair = decreased prognosis (direct salivary contact)

48
Q

T/F: An undetected or untreated perforation can become a serious infection within days or even hours.

A

True- Note the rapid spread of infection and greatly increased loss of bone structure within few weeks

49
Q

If your perforation results in the need to refer your patient, what should you do in the mean time?

A
  1. disinfect area
  2. protect found canals with easily removable material
  3. create easily removable temp that seals over perforation
50
Q

What type of perforation is not a serious problem?

A

Supragingival perforation

51
Q

With a subgingival perforation, the closer the perforation to the attachment, the:

A

worse the prognosis

52
Q

What type of perforation is possibly the worst iatrogenic injury?

A

Apical strip perforation

53
Q

A ___ is caused when a large instrument is misdirected or used too aggressively:

A

strip perforation

54
Q

What is the most difficult perforation to repair?

A

Apical strip perforation

55
Q

An apical perforation starts with a:

A

ledge

56
Q

List some examples of incidents:

A

perforation, separated instrument & NaOCl accident

57
Q

For all incidents, an incident report is required and must be filled out within:

A

48 hours

58
Q
A

Endodontics II (9 decks)

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