Endodontics questions for the ADC written exam.
Endodontics in the ADC written examination covers pulp and periapical biology, diagnosis, canal preparation and obturation, retreatment and endodontic surgery, and the management of dental trauma. Candidates should be able to make an accurate diagnosis, judge prognosis and decide whether to treat, refer or extract a tooth.
Free · no card needed · every answer explained
152
endodontics practice questions
- 12%
- of the exam
- 8
- subtopics
- Oct 2026
- updated
Inside this topic.
The subtopics our endodontics questions cover.
- Diagnosis
- Management
- Procedure
- Prognosis
- Trauma
- Treatment
- Complications
- Materials
Key facts to remember.
High-yield endodontics points to revise before the exam.
- 1
Working length is commonly established with an electronic apex locator confirmed radiographically, aiming to finish near the apical constriction, short of the radiographic apex.
- 2
A sinus tract should be traced with a gutta-percha point on a radiograph to identify the tooth or root responsible.
- 3
Cracked tooth syndrome typically causes sharp pain on biting, particularly on release, and the affected tooth is often hard to localise.
- 4
Enterococcus faecalis is frequently isolated from root-filled teeth with persistent apical periodontitis.
- 5
A good coronal seal is essential, because leakage through a defective temporary or permanent restoration can cause root canal treatment to fail.
Sample questions with answers.
10 practice questions for the ADC Written Exam - General Dentistry (Official Blueprint) - Australia (Endodontics). Pick an answer to see if you're right, with a full explanation.
Question 1
Which symptom most strongly differentiates irreversible from reversible pulpitis?
Question 2
What is the most appropriate initial management of this tooth?
Question 3
Which clinical finding most strongly indicates pulpal necrosis?
Question 4
What complication may occur if this condition is left untreated?
Question 5
Which pulp testing result supports irreversible pulpitis?
Question 6
If pulp necrosis develops, treatment is:
Question 7
Which radiographic feature suggests untreated canal anatomy?
Question 8
Why is nocturnal pain commonly associated with irreversible pulpitis?
Question 9
Which radiographic feature is most characteristic of internal root resorption?
Question 10
Which material is most appropriate for interim pain control?
Other topics in this exam.
Endodontics in other exams
Questions, answered
Use the International Association of Dental Traumatology (IADT) guidelines, which cover fractures, luxations and avulsion separately for primary and permanent teeth. For each injury, learn the immediate treatment, splint type and duration, and follow-up schedule. Remember that management of primary teeth prioritises protecting the developing permanent successor.
Consider the likely cause of failure, the quality of the existing root filling and coronal restoration, access to the canals, restorability, periodontal support and the patient's wishes. Orthograde retreatment is usually tried first when the canals are accessible, while apical surgery may suit teeth with a good crown or post that would be risky to remove. Extraction and replacement are options when the tooth is unrestorable or the prognosis is poor.
Ready to practise endodontics?
All 152 endodontics questions, with explanations and a readiness score for this topic.