Endo Final Study Guide (22+21) Flashcards
T/f: Inject LA in swollen tissue:
False
Best local anesthetic for bone penetration:
Articiane (thiophene ring)
Taper of hand instruments at UMKC:
0.04
Ludwig tissue spaces include:
sub-lingual;
sub-mandibular
sub-mental
T/F: The best prognosis is solely based on time for HRF
False
1. it is based on time since injury
2. age of patient
3. cooperation of patient
4. follow-up availability
5. approximation opportunities
6. stabilization options
Most common of all dental injuries:
Luxation injuries
Order of least to greatest damage of lunation injury:
- concussion
- subluxation
- extrusion
- lateral
- intrusive
Direction and pressure to get straight file through canal:
Watch-winding turn
Best way to check for pulp being numb:
Endo ice- whatever was causing the tooth to have pain in the first place
J-lesion on x-ray is safe to assume vertical root fracture:
False
Uncomplicated root fracture involves:
Dentin, and enamel (NO PULP)
The ability to point to an exact tooth means that what has been affected?
Inflammation of the PDL
T/F: VItal pulp therapy (VPT) is an appropriate alternative for HRF Class 3 (Ellis)
?
T/F: Would a small pulpal exposure with no other dental hx turn diagnosis into irreversible pulpitis?
True?
HRF Worst outcome:
No healing, inflammatory tissue
T/F: The most important outcome from HRF is the time it occurred:
False- multifactorial
Least severe luxation injury:
Concuccison
Most severe luxation injury:
Intrusion
Order of luxation injuries:
Least:
1. concussion
2. subluxation
3. extrusion
4. lateral
5. intrusion
It is recommended to run and avulsed tooth under all but:
tap water
Shortest supplemental injection:
Intra-pulpal
% NaOCl
8.3%
How long must you irrigate with NaOCl?
30 min
A classic example of AIP:
Polyp
T/F: Cold testing was negative, to confirm do EPT:
True
Total removal of all pulp canal to terminal end:
pulpectomy
T/F: A long needle is needed for gow gates:
False
T/F: #4 bur on mandibular incisors:
False #2 bur is used on anterior teeth
Maxillary pre-molar access shape:
Oval with MD buccal-palatal
All of the following are vertical root fractures except:
a) Jshape
b) Drop pocket
c) elevated tip
d) previously treated successful RCT
C- elevated temp
% of treatments that are left in RCT:
30%
T/F: Use bur to find canal:
false
NaOCl breaks down and becomes inactivated within:
3-5 min
Dentist removes nerve and puts temporary material in tooth, what is the dx?
Previously initiated treatment
Previous dentist removed nerve and tooth is not responsive to sensitivity tests. No PARL. Periapical diagnosis?
Healthy tissue
What is used to ensure a seal is placed in addition to a rubber dam?
ORaseal
DST is indicative of:
CAA
Pimple on gums is indicative of:
CAA
T/F: If you can’t place a rubber dam then it is below the standard of care
true
MB2 canal with maxillary 1st molar is seen in 95% of cases
true
What tooth causes the most issues when trying to numb?
mandibular 1st molar
Lingering pain is a sign of:
Irreversible symptomatic pulpitis
Tooth brush abrasion. Hypersensitivity to cold but normal response for all other clinical tests.
reversible pulpitis
T/F: VRF has a better prognosis than HRF:
False
There is a J shaped lesion and a single 10mm perio pocket (drop off) on previously treated RCT. Which this information it is safe to assume its VRF:
False- you have to surgically expose
Why would you use VPT on open apex of immature tooth?
allows roots to get stronger and apex to close
Most important factor for achieving a favorable outcome of an avulsed tooth:
dry time
IRR has excellent prognosis if RCT is done before perforation into PDL space. ERR has poor prognosis.
Both statements true
Rigid and semi flexible prevent ankylosis by allow for some small movements:
False (not rigid)
On a mandibular incisor there can be two canals. Which one are you likely to miss if you do not create your access incisally?
Lingual
Access depth:
7 mm
Which bur for mandibular incisor access?
2 round or 333
Narrowest MD access?
Mandibular central incisor
Shape of access for maxillary central incisor:
Triangle with base at incisal
Most likely to have 2 roots:
maxillary 1st premolar
The worst thing you can do during access?
Perforations
If you fail to locate and obtuse a canal during RCT it is likely it will fail
true
Mandibular molar has a ____ outline and acid missing the ___ canal
Trapezoidal and DL
What is true about MB2 canals with maxillary 1st molars?
seen in 95% of cases
Most common reason to have retreatment for maxillary 1st molars:
MB2
Hardest root canal to perform:
Maxillary molar with 5 canals
Biggest challenge for anesthetic:
Mandibular molar with SIP
Which is the most important factor regarding 8.3% NaOCl
DONT let needle bind
What is the first thing to do after 1 min of EDTA use?
NaOCl to inactivate the EDTA
Taper of blue vortex rotary files:
.06
Which file is used for “scouting”
10 SS hand file
How to get the SS stuck in the dentin? bad
continued clock wise rotation
When using a straight file, the lede is created on which area?
Outer wall of canal
OU
