NBDE Part II – Endodontics Exam
2025 Questions and Answers
successful results of a root canal - 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?
- 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? - ANSWER✔✔-1. repositioning
2. splinting
the root canal anatomy of a maxillary first molar with 4 canals requires which shape of
access preparation? - ANSWER✔✔-blunted triangle/rhombus
,emergency endodontic treatment includes what? - 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? -
ANSWER✔✔-symptomatic apical periodontitis
If a permanent maxillary central incisor was avulsed and rigidly splinted, what is the
most likely outcome? - ANSWER✔✔-replacement resorption
what does a 0.02 taper indicate for a K file? - 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? - ANSWER✔✔-extraction
what are the contraindications for pulpotomy? - 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? - ANSWER✔✔-pins should be placed 2mm into the amalgam
pins should be placed 1mm from the dentin-enamel junction (DEJ)
pins should not be bent
pins retain amalgam restorations
2025 Questions and Answers
successful results of a root canal - 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?
- 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? - ANSWER✔✔-1. repositioning
2. splinting
the root canal anatomy of a maxillary first molar with 4 canals requires which shape of
access preparation? - ANSWER✔✔-blunted triangle/rhombus
,emergency endodontic treatment includes what? - 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? -
ANSWER✔✔-symptomatic apical periodontitis
If a permanent maxillary central incisor was avulsed and rigidly splinted, what is the
most likely outcome? - ANSWER✔✔-replacement resorption
what does a 0.02 taper indicate for a K file? - 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? - ANSWER✔✔-extraction
what are the contraindications for pulpotomy? - 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? - ANSWER✔✔-pins should be placed 2mm into the amalgam
pins should be placed 1mm from the dentin-enamel junction (DEJ)
pins should not be bent
pins retain amalgam restorations
