Important Info Random Flashcards
The major reason for an access is
Straight line access to the midroot
Given picture of a tooth with an O shaped canal. This is what type of tooth
Type 2
Incisal compromise
Is a deviation from the straight line access
If you do not reach the pulp within _______ mm, you should
7, ask your instructor for help
Maxillary molars tend to have
4 canals
Mandibular central incisors have 2 canals
40% of the time
The single most important factor in making a RCT easier and increasing the success is
Proper access
depending on options i feel like this could be case selection
We use files on _______ case before discarding them
1
The IAG should be ___________ to the Final apical gauge
Identical in diameter
Obturation is not retained well when the working length is prepared
a. ¼ mm past the root apex
b. at the root apex
c. A and B are true
c. A and B are true
The first rotary tool that is used after the guide path is created is
35/0.12
… the first thing used is Wave One so i dont think this is correct
The two major factors of rotary instrument fracture
Cyclic fatigue and taper lock
Rotary instruments should not be used in
Type 2 and Type 4 canals
The difference between crown down and serial step back is that
Crown down procedure allows for flaring the occlusal aspect of the canal without increasing stress on the instruments
The 30-30 rule with NaOCl is…
Inserting NaOCl for 30 min in a canal after it is prepared to a size #30
NaOCl must be
Changed every 3-5 min
Which of the following does not indicate a perforation?
a. Hemorrhage
b. Unexpected pain
c. Loose resistance in the canal
b. Unexpected pain
c. Loose resistance in the canal
i think its just B?- haley
Which is the best way to diagnose a perforation
a. Hemorrhage
b. Apex Locator
b. Apex Locator
The initial apical gauge is
the smallest file that will not pass the apical constriction with light tapping
Which types of canals should be shaped to a size less than #35
Mandibular incisors
2 canal premolars
M. canals of mandibular molars
B. canals of maxillary molars
Leakage of the coronal restoration allowing saliva to contact the unprotected gutta percha
Requires retreatment within 2-3 days
The main component within gutta percha is
Zinc Oxide
The advantage of gutta percha is that
It becomes intimately associated with the irregularities in the canal walls
One of the most common reason for improper obturation
Canals that are too small in diameter
A radiograph should be taken before burning the gutta percha tree off to avoid
Underfill, overfill, voids
Larger files have
Increased stiffness and decreased flexibility
Canal transportation results in
Straightening out the canal
The most common problem associated with filing is
Perforation
The worst prognosis of a RCT is associated with
Strip perforation
Which of the following does not necessarily require an incident report
Canal transportation
One of the reasons that would not cause blocking out is
Using small files until the canal is large enough for larger canals
Ledges can lead to
Blockages, transportation, and Perforation
Prevention of iatrogenic errors is primarily due to
Case selection
You should always inform the patient of iatrogenic errors because
The statue of limit begins when the patient is aware of the error
Disclosure includes
Telling the patient all potential risks associated with the procedure
Perforations should be managed
Immediately
After a perforation, you should
Seal the perforation with cavit and use a temporary restoration then refer to an endodontist
The intra-canal medication of choice is
CaOH
Which of the following is used for a temporary restoration on a 1 surface access
Cavit
Which is placed after obturation assuming that a post-retained restoration is not required
Vitrebond
Which of the following can be helped with bleaching?
Pulpal necrosis that can release discoloring agents
The walking bleach technique uses
a. Sodium perborate and water
b. Sodium perborate and 2% H2O2
a. Sodium perborate and water
A patient comes into the office and responds with a lingering sensation to cold and pain. He also is very sensitive to percussion.
The patient’s pulpal status is…
SIP
A patient comes into the office and responds with a lingering sensation to cold and pain. He also is very sensitive to percussion.
The patient’s periapical status is…
SAP
A patient comes into the office and responds with a lingering sensation to cold and pain. He also is very sensitive to percussion. The treatment of choice is…
Referral to an endodontist for RCT
A patient comes in with a draining and sinus tract and no response to pulp testing. (The picture of the tooth has a BOMBED out crown). The patient’s pulpal status is…
pulp necrosis
A patient comes in with a draining and sinus tract and no response to pulp testing. (The picture of the tooth has a BOMBED out crown). The patient’s periapical status is…
CAP
A patient comes in with a draining and sinus tract and no response to pulp testing. (The picture of the tooth has a BOMBED out crown). The treatment of choice is…
extraction
The single most important factor in making a RCT easier and increasing the success
is
Case selection
Perforations should be managed
Immediately
What is the proper file for a working length radiograph (times 5)
15
What type of canal begins as one and splits at the apex
Type IV
How do you find the canals after access
Endo explorer
Best way to find if you have perf
Small file and EAL
You have to do informed consent before treatment; doesnt count as informed consent unless they understand
True;true
Bone loss from crest toward apex is indicative of
a. Periodontal infection
b. Endo infection
c. an axial crack
a. Periodontal infection
Which is not true?
All wave one files are .08 taper
Something about GP mc for LCL being a .06 ISO
false
Many questions about #15 being WL radiograph file
yep
Standard of care is same for generals and endos
true
If you dont feel confident with this tooth, at this time
Refer/true
What is the concentration of NaOCl used in the clinic?
8.3%
At what point can you refer?
At ANY time during tx
Which file is used to scout the canals and find patency?
10
First 8% NaOCL is used to remove the smear layer, then EDTA is used to clean
false
Which of the following has the greatest incidence of type IV canal
Mandibular 1st premolar
Which is not a primary consideration for RCT tx?
a. Can the pt afford
b. Is tooth restorable
c. Is periodontal sound
d. Is tooth strategic and functional
a. Can the pt afford
i think the answer is A- haley
Best way to not get a blockage
Insane irrigation
In clinic - which is false for single cone
a. Pump3 times
b. Put sealer on walls with paper point
c. Sear before tree film
b. Put sealer on walls with paper point
According to ADA, referral is for?
Best interest of the pt
If canal loose with #10…
Use primary wave one
Which is DANGER zone for shaping mandibular molar
Distal of mesial root
Best way for YOU to determine if you should do the RCT
a. AAE case assessment form
b. If it looks difficult
c. If it looks easy on the radiograph
a. AAE case assessment form
The primary goal of endo files is to “clean”
false
Best way to stop progression of IRR
a. Extract
b. Remove vital pulp
b. Remove vital pulp
If patient comes in after cleaning and shaping and still in pain what do you do?
Reopen, irrigate, whatever, and allow for re-healing
Bleach does all of the following except:
a. Remove pulp debris
b. Removes smear layer
c. Kills microorganisms
b. Removes smear layer
Which is unacceptable form of obturation?
a. Hydraulic
b. CLC
c. Chemplastized (chloropercha)
d. Carrier-based sectional thermo plasticized
c. Chemplastized (chloropercha)
Best prognosis for a perforation?
a. Apical
b. Supragingival
c. Strip
b. Supragingival
Total tooth length was 24, crown is 9, to do wave one on the coronal ⅓, which length should you stop at?
a. 14
b. 15
c. 20
d. 19
a. 14
What would you use for the reference point in the fractured #9
a. Shave it down to a flat surface
b. Highest point of fracture
c. Lowest point of fracture
a. Shave it down to a flat surface
Take WL radiograph with rubber dam on
true
Which is not indicative of pulpal inflammation or something
Broad base pocket, calculus present
Pick two to indicate VRF
a. Drop off pocket
b. J lesion
