EET MDS

Question 1:

Best material for obturating a root canal of a tooth is 
 1. Thermoplastic GP
 2. Silver cone
 3. Resorbable paste
 4. GP with sealer

Question 2:

Bacteria most commonly isolated from root canal is 
 1. Actinomyces
 2. Streptococci
 3. Staphylococci
 4. Fusobacterium

Question 3:

Which strain of yeast is found in the root canal 
1. Candida alibicans
2. Cryptococcus
3. Histoplasma
4. Actinomyces

Question 4:

Most common cause of persistent false positive cultures is due to 
1. Contamination with saliva
2. Cultural reversal
3. Contaminated culture media
4. Improper penetration of absorbent paper

Question 5:

The sterility of the root canal during treatment is assessed by 
 1. Radiographs
 2. Clinical observations
 3. Bacterial cultures
 4. Colour of dressings

Question 6:

Identify the correct statement regarding endodontic bacterial cultures 
 1. Absorbent papers should be placed 2 mm within the root canal before irrigating
 2. Gram +ve cocci predominate first 48 hours in 75 % of cases
 3. Cultural reversal occurs after 48 hours, wait at least 3 days before obturation
 4. All of the above

Question 7:

Best time to obturate root canals 
 1. When canals are dry
 2. When tooth is asymptomatic
 3. When successive negative cultures are obtained 
 4. All of the above

Question 8:

Which of the following is true of root canal medicaments in biomechanical preparation 
 1. They play a primary role
 2. Their role is only secondary
 3. Important, only persistent positive cultures obtain
 4. None of the above

Question 9:

Calcium hydroxide is advocated as an inter appointment intracanal medication because of 
 1. Its ability to dissolve necrotic tissue
 2. Its antimicrobial property
 3. Its ability to stimulate hard tissue formation
 4. Its powerful bleaching effect

Question 10:

Calcium hydroxide was introduced into endodontics by 
 1. Nygaard Ostby
 2. Hermann
 3. Schilder
 4. Hunter

Question 11:

Ca(OH) is given 
 1. In weeping canal
 2. When there is bleeding from root canals
 3. As a sterilizing agent
 4. To remove or dissolve periapical debris

Question 12:

Identify the wrong statement about maxillary molars 
 1. Root of pulp chamber of maxillary first molar is rhomboidal
 2. Floor is triangular with lingual wall missing
 3. Access cavity opening is trapezoidal
 4. Occlusal outline is parallelogram

Question 13:

If a fourth canal is to be found in a maxillary molar, it is usually located 
 1. Palatal to and in mesiobuccal root
 2. Under distobuccal cusp
 3. Adjacent to distobuccal canal
 4. In between distobuccal and palatocanal

Question 14:

After access cavity opening, instrument should be placed in............... direction to gain access to mesiobuccal root of maxillary first molar 
 1. Diagonally opposite distolingual
 2. Straight opposite mesiolingual
 3. Straight opposite distobuccal
 4. From mesiofacial itself

Question 15:

Palatel root of maxillary first molar is curved 
 1. Mesially
 2. Buccally
 3. Lingually
 4. Distally

Question 16:

Which root canal of maxillary first molar is difficult for instrumentation 
 1. Mesiobuccal
 2. Distobuccal
 3. Distolingual
 4. Mesio-lingual

Question 17:

In the mandibular arch, the greatest lingual inclination of the crown from its root is seen in the permanent 
 1. Canine
 2. Third molar
 3. First premolar
 4. Central incisor

Question 18:

Which of the following is most likely to have a bifurcated root 
 1. Maxillary canine
 2. Mandibular premolar
 3. Mandibular lateral incisor
 4. Maxillary centrals

Question 19:

Lower premolars are easiest (or) hardest teeth to treat endodontically. 
 1. Length of root
 2. Possibility of bifurcations
 3. Size of the canal
 4. Shape of the canal

Question 20:

The most easily perforated tooth with a slight mesial or distal angulation of bur after a mandibular central incisor is a 
 1. Maxillary premolar
 2. Maxillar molar
 3. Mandubular premolar
 4. Maxillary canine

Question 21:

From an endodontist point of view, maxillary first and second premolars 
1. Have same number of roots and canals
2. Have similar crown and root form
3. May vary in root form & canals
4. All of the above

Question 22:

There are sharp demarcations between pulpal chambers and pulp canals in which of the following teeth? 
 1. Mandibular second premolars
 2. Maxillary first premolars
 3. Maxillary lateral incisors
 4. Mandibular canines

Question 23:

A cross section of cervical third of pulp canal of maxillary second premolar resembles 
 1. Ellipse
 2. Square
 3. Circle
 4. Tirangle

Question 24:

If the pulp of the single rooted canal is triangular in cross-section with the base of the triangle located facially and apex located lingually with the mesial arm longer than the distal, the tooth is most likely 
 1. Maxillary central incisor
 2. Maxillary lateral incisor
 3. Mandibular second premolar
 4. Mandibular central incisor

Question 25:

Root morphology of upper lateral incisor in most cases 
 1. Straight with no curvatures
 2. Distolingual curvature in apical third
 3. Mesiobuccal curvature in apical third
 4. Mesiobuccal curvature in middle third

Question 26:

Percentage of mandibular incisors with two root canals and separate foramina 
 1. 0.5 %
 2. 1 %
 3. 2 %
 4. 5 %

Question 27:

Of the following permanent teeth, which is least likely to have two roots? 
1. Maxillary canine
2. Mandibular canine
3. Maxillary Ist premolar
4. Mandibular Ist premolar

Question 28:

Two canals are most often seen in the 
 1. Maxillary canine
 2. Mandibular canine
 3. Maxillary lateral incisors
 4. Mandibular first premolar

Question 29:

Internal resorption is common in 
 1. Upper molar
 2. Upper central incisors
 3. Lower central incisors
 4. Upper canines

Question 30:

The anterior tooth most likely to display two canals is 
 1. Maxillary central
 2. Maxillary lateral
 3. Mandibular central
 4. Mandibular lateral

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