Endo Final Studyguide (21 + 22) Flashcards
T/F: Inject LA in swollen tissue
False
Best LA for bone penetration:
Articaine (Thiophene ring)
Taper of hand instruments at UMKC:
0.04
Ludwig tissue spaces include:
Sublingual
Submandibular
Submental
T/F: The best prognosis is soley based on time for HRF
False- it is based on
- time since injury
- age of patient
- cooperation of patient
- follow-up availability
- approximation opportunity
- stabilization options
Children under 5 years _____ injuries in primary dentition, ______ is the most common injury:
1/3; luxation
Adolescents 12 years of age ______ suffer dental trauma, most common is _________
20-30%; uncomplicated crown fracture
Most common of all dental injuries:
luxation injuries
Order of least to greatest damage of luxation injuries:
- concussion
- subluxation
- extrusion
- lateral
- intrusive
Direction & pressure to get straight file through canal
watch winding turn
Best way to check for pulp being numb:
endo ice- whatever was causing tooth to have pain in the first place
T/F: J lesion on X-ray safe to assume VRF
False
Uncomplicated root fracture involves:
dentin + enamel (no pulp)
Ability to point to an exact tooth means what has been affected?
Inflammation of PDL
T/F: Vital pulpal therapy (VPT) is an appropriate alternative for Class 3 HRF:
T/F: Would a small pulp exposure with no other dental history turn diagnosis into irreversible pulpits?
True?
HRF worst outcome:
No healing; inflammatory tissue
T/F: The most important outcome for HRF is the time it occured
False
Lease severe of luxation injuries:
concussion
(intrusion = most severe)
Order of laxation injuries least to most severe:
- concussion
- subluxation
- extrusion
- lateral
- intrusion
Most severe luxation injury:
intrusion
It is recommended to run avulsed tooth under all but:
tap water
Shorter supplemental injection:
intra-pulpal
% NaOCl:
8.3%
How long must you irrigate with NaOCl?
30 min
Classic example of irreversible asymptomatic pulpitis (AIP):
Polyp
T/F: Cold test was negative, to confirms do EPT
True
Total removal of all pulp canal to terminal end:
Pulpectomy
T/F: Long needle for Now Gates is required
False
T/F: #4 bur on mandibular incisors
False- #2 bur is use on anterior teeth
Maxillary premolar access shape:
Oval with MD buccal-palatal
All of the following are VRF except:
a- J shape
b- drop pocket
c- elevated temp
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 inactive within:
3-5 min
Dentist removed nerve and put temporary material in the tooth, what is the diagnosis:
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:
Chronic apical abscess (CAA)
Pimple on gums is indicative of:
Chronical apical abscess (CAA)
T/F: If you cannot place a rubber dam than it is below the standard of care
True
MB2 canal with maxillary first molar seen 95% of cases:
True
What tooth causes the most issues when trying to numb?
Mandibular first molar
Lingering pain is a sign of:
irreversible symptomatic pulpitis
Toothbrush 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 & a single mm perio pocket drop off on previously treated RCT, with this information it is safe to assume it is VRF:
False- you have to surgically expose
Why would you use VPT on immature tooth with open apex?
Allows roots to get stronger and apex to close
Most important factor in acheiving favorable outcome in 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 & semi-flexible prevents ankylosis by allowing 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?
The lingual
Access depth:
7 mm
Which bur for mandibular incisor access?
2 round or 333
Narrowest MD access?
Mandibular central
Shape of access for maxillary central incisor:
Triangle with base at incisal
Most likely to have two roots:
Max 1st premolar
The worst thing you can do during access:
perforation
If you fail to locate & obturate a root canal during RCT it is likely it will fail:
true
Manidbular molar has a _____ outline and try to avoid missing the ____ canal
Trapezoidal; DL
what is true about MB2 canals with maxillary first molars?
Seen in 95% of cases
Most common reason for pretreatment of maxillary first molars:
MB2 canal
Hardest root canal to perform:
Maxillary molar with 5 canals
Biggest challenge for anesthetic:
mandibular molar with SIP
What is the most important factor regarding 8.3% NaOCl?
DON’T 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:
0.06
Which file is used for scouting?
10 SS hand file
How to get the SS stuck in the dentin:
Continued clockwise rotation
When using a straight file a ledge is created in which area?
Outer wall of canal
