Practice Test Geeks(AGD) Academy of General Dentistry Certification Practice Test
← All AGD Flashcard Decks

Endodontic Diagnosis and Treatment Flashcards

7 cards from real AGD practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Endodontic Diagnosis and Treatment flashcards as text

  1. A patient presents with a tooth that is tender to percussion but has no response to cold testing. Radiographically, there is a periapical radiolucency. What is the most likely diagnosis?

    Answer: Pulp necrosis with symptomatic apical periodontitis

    Pulp necrosis with symptomatic apical periodontitis presents with no pulp vitality response, percussion sensitivity, and periapical changes on radiograph.

  2. Which instrument is used to determine the working length electronically during root canal treatment?

    Answer: Electronic apex locator

    Electronic apex locators measure impedance differences to identify the apical foramen and determine accurate working length.

  3. During canal preparation, a file separates within the apical third of a curved canal. What is the FIRST recommended step?

    Answer: Attempt ultrasonic retrieval if trained

    Ultrasonic techniques can often retrieve separated instruments from the coronal and middle thirds; the decision to refer depends on fragment location and operator skill.

  4. Sodium hypochlorite is used as an irrigant during root canal treatment primarily because of its ability to:

    Answer: Dissolve organic tissue and kill bacteria

    Sodium hypochlorite is the gold standard endodontic irrigant due to its potent antimicrobial action and ability to dissolve pulpal remnants.

  5. A tooth diagnosed with a chronic apical abscess most commonly presents with:

    Answer: A sinus tract draining to the mucosa

    Chronic apical abscess is characterized by a sinus tract (parulis) that allows continuous drainage, often making the tooth asymptomatic.

  6. Which root canal sealer is classified as a bioceramic material and is known for its excellent biocompatibility?

    Answer: EndoSequence BC Sealer

    EndoSequence BC Sealer is a premixed calcium silicate-based bioceramic sealer with high biocompatibility and excellent sealing ability.

  7. In a patient with a fully formed apex, which obturation technique uses thermoplasticized gutta-percha injected into the canal?

    Answer: Thermafil technique

    The Thermafil technique uses a plastic carrier coated with alpha-phase gutta-percha that is heated and injected into the prepared canal.