Endodontics
Endodontics Exam Challenge
Test your knowledge of endodontics with our comprehensive quiz! This engaging assessment covers a variety of topics including apical preparation techniques, NaOCl accident management, and instrument handling. Ideal for dental students, practitioners, and enthusiasts!
- 30 carefully crafted questions
- Multiple choice format for easy answering
- Improve your understanding of endodontic procedures
Which one is a benefit of wide apical preparation?
Removal of infected dentin
Ideal for thermoplastic obturation
Risks of preparation errors are reduced
Less compaction of hard tissue debris in canal spaces
Which one is a drawback of narrow apical preparation?
Not ideal for thermoplastic obturation
Limited access of irrigants and medications to apical third of root canal.
More compaction of hard tissue debris in canal spaces.
Cannot be combined with tapered preparation to counteract some drawbacks.
Which one is a drawback of wide apical preparation?
Not ideal for lateral compaction
Little removal of infected dentin
Increased risks of preparation errors
Limited access of irrigants and medications to apical third of root canal.
If lateral condensation is to be used as the method of obturation, the apical preparation should be prepared to which size?
At least 40
At least 20
At least 50
At least 30
According to “apical box preparation” technique, the apical enlargement of upper central incisor should be:
Size 30-50
Size 40-60
Size 45-60
Size 60-80
According to “apical box preparation” technique, the apical enlargement of upper lateral incisor should be:
Size 30-50
Size 40-60
Size 45-60
Size 60-80
According to “apical box preparation” technique, the apical enlargement of upper canine should be:
Size 30-50
Size 40-60
Size 50-70
Size 60-80
According to “apical box preparation” technique, the apical enlargement of upper first premolar with one canal should be:
Size 30-50
Size 40-60
Size 50-70
Size 60-80
According to “apical box preparation” technique, the apical enlargement of upper first premolar with 2 canals should be:
Size 35-50
Size 25-40
Size 45-60
Size 55-80
According to “apical box preparation” technique, the apical enlargement of upper second premolar with one canal should be:
Size 30-60
Size 40-70
Size 50-80
Size 60-80
According to “apical box preparation” technique, the apical enlargement of upper second premolar with two canals should be:
Size 25-40
Size 30-45
Size 35-50
Size 40-55
According to “apical box preparation” technique, the apical enlargement of upper first premolar with 3 canals should be:
Size 25
Size 30
Size 35
Size 40
According to “apical box preparation” technique, the apical enlargement of mesio-buccal root of an upper molar with 1canal should be:
Size 25-40
Size 30-45
Size 35-50
Size 40-55
According to “apical box preparation” technique, the apical enlargement of mesio-buccal root of an upper molar with 2 canals should be:
Size 25-35
Size 30-40
Size 35-45
Size 40-50
According to “apical box preparation” technique, the apical enlargement of the disto-buccal root of an upper molar should be:
Size 30-50
Size 40-60
Size 50-70
Size 60-80
According to “apical box preparation” technique, the apical enlargement of the palatal root of an upper molar should be:
Size 60-70
Size 60-80
Size 60-90
Size 60-100
According to “apical box preparation” technique, the apical enlargement of lower incisors with 1 canal should be:
Size 25-50
Size 30-55
Size 35-60
Size 40-70
According to “apical box preparation” technique, the apical enlargement of lower incisors with 2 canals should be:
Size 25-40
Size 30-45
Size 35-50
Size 40-55
According to “apical box preparation” technique, the apical enlargement of lower canine should be:
Size 30-60
Size 40-70
Size 50-80
Size 60-90
According to “apical box preparation” technique, the apical enlargement of lower premolars with one canal should be:
Size 30-60
Size 40-70
Size 50-80
Size 60-90
According to “apical box preparation” technique, the apical enlargement of lower premolars with two canals should be:
Size 30-45
Size 35-50
Size 40-55
Size 45-60
According to “apical box preparation” technique, the apical enlargement of both canals of mesial root of a lower molar should be:
Size 30-40
Size 35-45
Size 40-50
Size 45-55
According to “apical box preparation” technique, the apical enlargement of the distal root of a lower molar with one canal should be:
Size 30-50
Size 40-60
Size 50-70
Size 60-80
According to “apical box preparation” technique, the apical enlargement of the distal root of a lower molar with two canals should be:
Size 30-50
Size 40-60
Size 50-70
Size 60-80
When should NaOCl accidents be suspected?
When the patient has a nauseous feeling
When there is a spontaneous and profuse hemorrhaging from the canal space.
When the patient can hardly breath
When the patient reports the bleach smell
What may not be one of the causes of NaOCl accidents?
Wedging of the irrigation needle
Lateral perforation of the root
Ledge
Inaccurate working length
What is the first step in managing NaOCl accidents?
Immediately refer to the hospital or a maxillofacial surgeon.
Immediately engage the problem by stopping further treatment and irrigating with plenty of normal saline.
Immediately apply warm compresses
Immediately give the patient some antibiotics
Give me one way of how to prevent NaOCl accidents?
Always wedge the needle tip in the canal space when irrigating.
Place the needle tip exactly at the working length
Always underinstrumentation
Confirm the identity of the solution prior to injection or irrigation
Which of the following statement is true about broken instruments?
Hand instruments fracture more frequently than NiTi rotary instruments.
The broken instruments are always some types of file or reamer.
Broken instruments occurs most frequently in mandibular molars
The main cause of broken instrument is manufacturing defects.
To avoid improper use which would result in broken instruments:
We should always instrument in a dry canal
We should not force a file further when its progress in hindered
We should not remove and clean instrument of shaved dentin periodically during instrument process.
We should not precurve files
If an instrument is broken at the apex after the completion of root canal preparation of a vital case, how would the prognosis be like?
The case will absolute fail
The prognosis is poor
The prognosis is guarded
The prognosis should not be affected
If an instrument is broken in the middle third of a canal during the root canal preparation of a tooth with a periapical lesion, but the separated instrumented can be retrieved without much loss of root dentin, how would the prognosis be like?
The case will absolute fail
The prognosis is poor
The prognosis is guarded
The prognosis should not be affected
If an instrument is broken at the apex of a canal after the root canal preparation is completed of a tooth with a periapical lesion, and the separated instrumented can neither be retrieved nor bypassed, how would the prognosis be like?
The case will absolute fail
The prognosis is poor
The prognosis is guarded
The prognosis should not be affected
If an instrument is broken in the middle third of a canal at a later stage of the root canal preparation of a tooth with a periapical lesion, and the separated instrumented can neither be retrieved nor bypassed, how would the prognosis be like?
The case will absolute fail
The prognosis is poor
The prognosis is guarded
The prognosis should not be affected
If an instrument is broken in the middle third of a canal at the very beginning of the root canal preparation of a tooth with a periapical lesion, and the separated instrumented can neither be retrieved nor bypassed, how would the prognosis be like?
The case will absolute fail
The prognosis is poor
The prognosis is guarded
The prognosis should not be affected
The Management of broken instruments by surgical approach includes all of the following methods except one:
Intentional replantation
Radicular surgery
Laser irradiation
Root amputation
What is the main risk associated with internal bleaching?
Gingival irritation
Enamel and Dentin Damage
Mercury Release from Amalgam Restorations
Cervical Root Resorption
Which is usually used as a scaffold for a contemporary endodontic regeneration?
Platelet-rich plasma (PRP)
Blood clot
Bioceramics
Polyglycolic acid (PGA)
Why do we always try to preserve the pulp vitality of immature teeth?
Because this is what should be done
Because pulp vitality is necessary for long-term survival of these teeth.
Because the pulp of immature teeth is very capable of healing.
Because this is the only treatment option to save such immature teeth
���្លា ឝាងក្រោមមួយណាជា Symptoms of hyperemia?
Pain short duration at least one minute
Sharp pain
Spontaneous pain Sharp pain
Pain short duration at least one minute and Sharp pain
���ាទូទៅ maxillary canine has
One canal
Two canals
Three canals
���ំលើយឝ្រូវទាំងអស់
Pulpotomy is must be:
Remove all pulp
Remove pulp chamber
���កឝែ pulp chamber ដែលមាន Infection
���កឝែ pulp roots
���្វីជាជំរើសទីមួយសំរាប់ pulp capping
Zinc Oxide Eugenol
Glass Ionomar
Calcium Hydroxide
Bonding adhesive
Pulpotomy ភាគច្រើនគ៝ធ្វើនៅលើធ្ម៝ញ
Primary teeth
Young permanent teeth
Permanent teeth
Primary teeth and Young permanent teeth
The good root canal filling is the:
Apical Constriction
Apical Foramen
Root apex
All of above
Usually Maxillary First Premolar has
One canal One foramen
Two canals one foramen
Two canals two foramen
All of above
���ាគច្រើន Mandibular second Premolar មាន
One canal one foramen
Two canals One foramen
Two canals two foramen
All of above
���ាទូទៅ Mandibular first molar មានឬស
Two roots
Three roots
Four roots
Five roots
The following are important factors in restoring an endodontically treated tooth:
Preserving as much coronal tooth substance as possible
Producing a long post without compromising apical seal
Removing all coronal dentine
Providing a wide post
Major causes of failure in root canal therapy are:
Placing small instruments through the foramen
Presence of bacteria remaining within the root canal
Presence of small amounts of filling material in the periradicular tissue
Presence of necrotic material within the canal system
Pain on percussion before endodontic treatment indicates
Reversible pulpitis.
Irreversible pulpitis.
Pulp necrosis.
Inflammation of periodontal tissues.
For the extripation of entire pulp, necrotic debris, and foreign material, one should use
Raemers
Files
Barbed broaches
Bures
In RCT, over preparation of the outer wall of the optical curvature of the canal with inflexible instrument will cause
Zipping
Perforation
Elbow formation
Ledge formation
A patient presents wet a draining sinus tract in labial vestibule of a maxillary Central incisor. To confirm your diagnosis about the origin of pathoses you should
Open the concerned root chamber
Taking the bite wing radiograph
Thread guttapercha through the root canal and expose theradiograph
Thread the guttapercha through the tract and expose aradiograph
Ayoung 12 years old boy presents with reddish overgrowth of tissue, protending from carious exposure in lower molar. What may be the possible diagnosis?
Pulp polyp
Pulpal hyperemia
Varicosed polyp
Pulpal granuloma
An 8 years old boy presents with class III fracture of tooth# 11, which appeared an hour ago, the apex is not closed. Your treatment should be
Direct pulp capping with Ca(OH)
Pulpectomy follows by RCT.
Pulpotomy and fill with Ca(OH)2
Smoothening of ledges and restore with composite
Dental pulp is devided in :
Apical part
Coronal part
Radicular part
Coronal part and Radicular part
Which permanent tooth has two root canals :
Superior canine
First superior premolar
First upper molar
First lower molar
Second upper molar
Which tooth has tuberculum Carabelli :
Permanent canine
First upper premolar
First upper molar
Second upper molar
Permanent teeth with three roots are :
First upper premolar
Second lower molar
Second upper molar
First lower molar
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