BDS Endodontics Syllabus

Endodontics syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Endodontics in BDS, not a summary of it.

1. 1

   Introduction to Endodontics

   2 topics

   • History and Evolution
     • Ancient Practices
     • Modern Advancements
   • Scope and Importance
     • Role in Dental Health
     • Interdisciplinary Connections
2. 2

   Dental Pulp and Periradicular Tissues

   2 topics

   • Anatomy of the Dental Pulp
     • Pulp Structure
     • Functions of Dental Pulp
   • Pathophysiology
     • Pulpal Diseases
     • Periradicular Diseases
3. 3

   Diagnosis in Endodontics

   3 topics

   • Clinical Examination
     • Visual Inspection
     • Palpation and Percussion
   • Diagnostic Tools
     • Radiographic Techniques
     • Electronic Pulp Testing
   • Differential Diagnosis
     • Endodontic vs. Non-Endodontic Pain
     • Systemic Conditions Mimicking Endodontic Symptoms
4. 4

   Endodontic Microbiology

   2 topics

   • Microbial Flora
     • Common Microorganisms
     • Biofilms in Endodontics
   • Sterilization and Disinfection
     • Chemical Agents
     • Mechanical Debridement
5. 5

   Endodontic Instruments and Materials

   3 topics

   • Hand Instruments
     • Types and Uses
     • Maintenance
   • Rotary Instruments
     • Design and Function
     • Advantages and Limitations
   • Obturation Materials
     • Gutta-Percha
     • Sealers
6. 6

   Endodontic Procedures

   3 topics

   • Root Canal Treatment
     • Access Preparation
     • Cleaning and Shaping
     • Obturation Techniques
   • Endodontic Retreatment
     • Indications and Contraindications
     • Techniques
   • Surgical Endodontics
     • Apicoectomy
     • Root-End Filling
7. 7

   Complications and Management

   2 topics

   • Intraoperative Complications
     • Instrument Fracture
     • Perforation
   • Postoperative Complications
     • Pain Management
     • Infection Control
8. 8

   Pediatric Endodontics

   2 topics

   • Primary Teeth Endodontics
     • Pulpotomy
     • Pulpectomy
   • Permanent Teeth Endodontics in Children
     • Apexogenesis
     • Apexification
9. 9

   Advances in Endodontics

   2 topics

   • Regenerative Endodontics
     • Stem Cell Therapy
     • Tissue Engineering
   • Technological Innovations
     • Laser Endodontics
     • 3D Imaging and Printing

Endodontics flashcards for BDS

25 of 51 cards from the Endodontics deck — real questions with worked answers.

1. Define endodontics as recognised by the American Association of Endodontists (AAE).

   Endodontics is the branch of dentistry concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues, and with the prevention, diagnosis and treatment of their diseases and injuries.

2. Who is regarded as the 'father of modern endodontics' and what key contribution is credited to him?

   Louis I. Grossman; he systematised endodontic practice, wrote the classic textbook 'Endodontic Practice', and defined the phases of root canal treatment.

3. What did the 'focal infection theory' (Weston Price / William Hunter, early 1900s) claim, and what was its impact on endodontics?

   It claimed that infected teeth seeded systemic disease, leading to widespread tooth extraction and a decline in root canal therapy; it was later discredited, allowing endodontics to be re-established as a valid discipline.

4. State two major reasons why endodontic treatment is important in modern dentistry (its scope/importance).

   It preserves the natural tooth and its function/aesthetics rather than extracting it, and it eliminates pulpal/periradicular infection to relieve pain and prevent spread of infection while maintaining the arch integrity.

5. Name the four histological zones of the dental pulp from the odontoblasts inward.

   1) Odontoblastic layer, 2) Cell-free zone of Weil, 3) Cell-rich zone, 4) Pulp core (central pulp).

6. Which cells produce dentine and where are they located within the pulp?

   Odontoblasts; they line the periphery of the pulp (odontoblastic layer) just internal to the predentine, with their processes extending into the dentinal tubules.

7. What are the four types of dentine relevant to pulp pathology?

   Primary dentine (formed before root completion), secondary dentine (formed after root completion throughout life), tertiary/reparative (reactionary) dentine (formed in response to stimuli), and sclerotic dentine (tubule occlusion).

8. List the principal sensory nerve supply and blood supply of the dental pulp.

   Sensory supply: branches of the trigeminal nerve (Aδ fibres for sharp pain, C fibres for dull pain). Blood supply: arterioles entering through the apical foramen from the superior/inferior alveolar arteries.

9. Why does the dental pulp have limited capacity to tolerate inflammation (its low-compliance environment)?

   Because it is enclosed within rigid dentinal walls with no collateral circulation, so oedema raises intrapulpal pressure that cannot expand, compressing vessels and leading to strangulation and necrosis.

10. Differentiate reversible from irreversible pulpitis in terms of pain characteristics.

    Reversible pulpitis: short, sharp pain to stimuli (cold/sweet) that stops when the stimulus is removed. Irreversible pulpitis: spontaneous, lingering, throbbing pain that persists after stimulus removal, often worse when lying down.

11. What are the two main types of apical periodontitis and how do they differ symptomatically?

    Acute apical periodontitis (painful, tender to percussion, may be vital or non-vital) and chronic apical periodontitis (usually asymptomatic, radiolucent lesion, non-vital pulp).

12. Define a periapical (dental) abscess and its classic clinical signs.

    A localised collection of pus at the tooth apex due to pulpal necrosis; signs include severe throbbing pain, swelling, tenderness to percussion, tooth feeling 'high/elevated', and possible pus discharge through a sinus tract.

13. What is condensing osteitis (sclerosing osteitis)?

    A localised increase in bone density (radiopacity) at the apex of a tooth with chronic low-grade pulpal inflammation, representing a bone reaction to mild irritation.

14. List the essential steps of a clinical endodontic examination.

    History of pain, visual/extraoral and intraoral inspection, palpation, percussion (vertical and horizontal), mobility assessment, pulp vitality (sensibility) testing, periodontal probing, and radiographic examination.

15. What does a positive response to percussion typically indicate?

    Inflammation of the periodontal ligament (apical periodontitis), indicating periradicular involvement rather than purely pulpal disease.

16. Contrast the information given by a thermal (cold) pulp test versus an electric pulp test (EPT).

    Thermal test assesses A-delta fibre response (sensibility) and helps grade pulpitis; EPT gives only a yes/no answer on nerve response (vital vs non-vital) but does not measure degree of inflammation. Neither measures blood flow.

17. Which pulp test actually measures pulp vascularity rather than nerve response, and why is it more accurate for vitality?

    Laser Doppler flowmetry (and pulse oximetry) measure blood flow directly; vitality depends on blood supply, so these detect true vitality even when nerves are damaged.

18. Name the standard radiographic techniques used in endodontic diagnosis.

    Periapical radiographs (paralleling technique), bitewings, and Cone-Beam Computed Tomography (CBCT) for 3D assessment of complex anatomy, resorption, fractures and missed canals.

19. What is an apex locator and what electrical principle does it use?

    An electronic device that determines the working length by locating the apical constriction/foramen; it works on the principle that the electrical resistance (impedance) between the periodontium and oral mucosa is a constant value (originally ~6.5 kΩ).

20. Give the classic differential diagnosis of pain of pulpal origin versus periodontal origin.

    Pulpal pain is often poorly localised, sharp/throbbing, and provoked by thermal stimuli; periodontal pain is well localised, provoked by biting/percussion, associated with pockets and a vital pulp.

21. How can you differentiate referred pain from a true pulpal source in the suspect tooth?

    Referred pain does not respond to local anaesthetic infiltration of the suspect tooth or to direct stimulation of it; true source pain is reproduced by testing the offending tooth and relieved by anaesthetising it.

22. Distinguish a periodontal abscess from a periapical (endodontic) abscess.

    Periodontal abscess: vital pulp, deep periodontal pocket, swelling over the lateral root/gingiva. Periapical abscess: non-vital pulp, no deep pocket (unless perio-endo lesion), swelling near the apex.

23. What is the predominant microbial character of primary endodontic infections?

    They are polymicrobial and predominantly anaerobic (obligate anaerobes such as Fusobacterium, Porphyromonas, Prevotella, Peptostreptococcus, and spirochaetes).

24. Which microorganism is most strongly associated with persistent/secondary endodontic infections and failed root canal treatment?

    Enterococcus faecalis (a facultative anaerobe resistant to intracanal medicaments); Candida albicans is the fungus most often implicated.

25. Define a biofilm and explain its clinical importance in endodontics.

    A biofilm is a structured community of microorganisms embedded in an extracellular polymeric matrix adherent to a surface (canal walls); its matrix makes bacteria far more resistant to antimicrobials and host defences, making mechanical/chemical disruption essential.

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