NBDE Part II – Endodontics UPDATED
ACTUAL Exam Questions and CORRECT
Answers
successful results of a root canal - CORRECT ANSWER - 1. regeneration of alveolar bone
2. regeneration of the periodontal ligament
3. apical seal
periodical radiolucencies are only able to be visualized after what has been annihilated? -
CORRECT ANSWER - the junction of the cortical and cancellous bone
what steps should be taken to ensure successful replantation of a maxillary central incisor in a 13
year old patient? - CORRECT ANSWER - 1. repositioning
2. splinting
the root canal anatomy of a maxillary first molar with 4 canals requires which shape of access
preparation? - CORRECT ANSWER - blunted triangle/rhombus
emergency endodontic treatment includes what? - CORRECT ANSWER - 1. debride the
canals
2. placement of a temporary dressing material within the root canals
what is the most common diagnosis for severe pain upon percussion of a tooth? - CORRECT
ANSWER - symptomatic apical periodontitis
If a permanent maxillary central incisor was avulsed and rigidly splinted, what is the most likely
outcome? - CORRECT ANSWER - replacement resorption
, what does a 0.02 taper indicate for a K file? - CORRECT ANSWER - 0.02mm increase in
diameter per 1mm of file length
what treatment is indicated for a 5 year old patient with a sinus tract and a dark discoloration
associated with their maxillary central incisor that appeared following trauma? - CORRECT
ANSWER - extraction
what are the contraindications for pulpotomy? - CORRECT ANSWER - internal resorption
(root canal therapy is indicated)
perforation of pulp chamber floor
one half root resorption
cellulitis
localized abscess
draining sinus
inability to isolate the tooth
Inability to properly restore the tooth after the procedure
what do pins do? - CORRECT ANSWER - pins should be placed 2mm into the amalgam
pins should be placed 1mm from the dentin-enamel junction (DEJ)
ACTUAL Exam Questions and CORRECT
Answers
successful results of a root canal - CORRECT ANSWER - 1. regeneration of alveolar bone
2. regeneration of the periodontal ligament
3. apical seal
periodical radiolucencies are only able to be visualized after what has been annihilated? -
CORRECT ANSWER - the junction of the cortical and cancellous bone
what steps should be taken to ensure successful replantation of a maxillary central incisor in a 13
year old patient? - CORRECT ANSWER - 1. repositioning
2. splinting
the root canal anatomy of a maxillary first molar with 4 canals requires which shape of access
preparation? - CORRECT ANSWER - blunted triangle/rhombus
emergency endodontic treatment includes what? - CORRECT ANSWER - 1. debride the
canals
2. placement of a temporary dressing material within the root canals
what is the most common diagnosis for severe pain upon percussion of a tooth? - CORRECT
ANSWER - symptomatic apical periodontitis
If a permanent maxillary central incisor was avulsed and rigidly splinted, what is the most likely
outcome? - CORRECT ANSWER - replacement resorption
, what does a 0.02 taper indicate for a K file? - CORRECT ANSWER - 0.02mm increase in
diameter per 1mm of file length
what treatment is indicated for a 5 year old patient with a sinus tract and a dark discoloration
associated with their maxillary central incisor that appeared following trauma? - CORRECT
ANSWER - extraction
what are the contraindications for pulpotomy? - CORRECT ANSWER - internal resorption
(root canal therapy is indicated)
perforation of pulp chamber floor
one half root resorption
cellulitis
localized abscess
draining sinus
inability to isolate the tooth
Inability to properly restore the tooth after the procedure
what do pins do? - CORRECT ANSWER - pins should be placed 2mm into the amalgam
pins should be placed 1mm from the dentin-enamel junction (DEJ)
