Dental Knowledge Quiz

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Questions and Answers

Which of the following is a common method to diagnose a cracked tooth?

  • Gum bleeding and swelling
  • Block line in Transillumination and pain when releasing the bite
  • Radiographic evidence of fracture (correct)
  • Sensitivity to cold beverages

How long is the recommended splinting time for teeth with alveolar fractures?

  • 3 weeks
  • 4 weeks (correct)
  • 6 weeks
  • 2 weeks

Which type of file has an active cutting tip?

  • K file (correct)
  • Reamer
  • H file

Which file is commonly used to negotiate calcified canals?

<p>Reamer (D)</p> Signup and view all the answers

What is the cutting length of an ISO file?

<p>16 mm (C)</p> Signup and view all the answers

Which type of fibers transmit dull pain?

<p>Unmyelinated fibers (A)</p> Signup and view all the answers

What is the best material that allows tissue healing around the apex?

<p>Calcium hydroxide (A)</p> Signup and view all the answers

What is a patency file?

<p>Small flexible K-file, which is passively moved through the apical constriction (C)</p> Signup and view all the answers

Which fungi are commonly found in failed root canal treatments?

<p>Candida albicans (B)</p> Signup and view all the answers

Which of the following has the highest pH?

<p>Sodium hypochlorite (NaOCl) (C)</p> Signup and view all the answers

Which of the following is a common cause of pain when releasing the bite in a cracked tooth?

<p>Block line in Transillumination (A)</p> Signup and view all the answers

What is the recommended splinting time for teeth with alveolar fractures?

<p>6 weeks (D)</p> Signup and view all the answers

Which type of file is commonly used to negotiate calcified canals?

<p>K file (B)</p> Signup and view all the answers

What is the cutting length of an ISO file?

<p>21 mm (B)</p> Signup and view all the answers

Which type of fibers transmit dull pain?

<p>Unmyelinated fibers (B)</p> Signup and view all the answers

What is the best material that will allow tissue healing around the apex?

<p>Calcium hydroxide (A)</p> Signup and view all the answers

Which fungi are commonly found in failed root canal treatments?

<p>Aspergillus niger (B)</p> Signup and view all the answers

Which of the following has the highest pH?

<p>Sodium hypochlorite (NaOCl) (C)</p> Signup and view all the answers

What is the pH of sodium hypochlorite?

<p>13 (B)</p> Signup and view all the answers

What is the term for the extrusion of Gutta-percha and sealer out in the distal side of the mesial root of a molar?

<p>Strip perforation (A)</p> Signup and view all the answers

During irrigation, the patient experiences pain and profuse bleeding. What complication is likely occurring?

<p>Sodium hypochlorite (NaOCl) accident (B)</p> Signup and view all the answers

Swelling, pain, and a chlorine-like smell during root canal treatment may indicate a:

<p>Sodium hypochlorite accident (C)</p> Signup and view all the answers

Sodium hypochlorite (NaOCl) accidents often result from:

<p>Failure to use a lubricant during instrumentation (B)</p> Signup and view all the answers

What is the recommended emergency treatment for irreversible pulpitis?

<p>Root canal therapy (C)</p> Signup and view all the answers

During instrumentation, the master apical file does not reach the working length. What is the appropriate management?

<p>Bypass with a small, curved file (C)</p> Signup and view all the answers

In which tooth is a single canal most commonly found?

<p>Upper canine (cuspid) or upper central incisor (B)</p> Signup and view all the answers

What type of bacteria is predominant in the necrotic pulp?

<p>Anaerobic (C)</p> Signup and view all the answers

What is the primary use of a dental file?

<p>To shape the canal (B)</p> Signup and view all the answers

Approximately what percentage of teeth have a single canal with two foramens?

<p>33% (A)</p> Signup and view all the answers

What color is typically used for a file size 35?

<p>Yellow (A)</p> Signup and view all the answers

Which is the most likely diagnosis for a tooth with periapical radiolucency that has decreased after 8 months of root canal treatment and no symptoms are present?

<p>Healing (D)</p> Signup and view all the answers

Which tooth can exhibit all 8 configurations (i.e., upper 5)?

<p>Upper 5 (Maxillary first premolar) (A)</p> Signup and view all the answers

What part of the pulp does an electric pulp test primarily act on?

<p>Neural element of pulp (C)</p> Signup and view all the answers

What material is considered best for repairing a perforation?

<p>Bioceramic (MTA) (C)</p> Signup and view all the answers

A fracture that involves cementum, enamel, and dentin, but does not involve the pulp, is termed:

<p>Crown-root fracture without pulp involvement (D)</p> Signup and view all the answers

What is a concussion injury to a tooth characterized by?

<p>Marked tenderness to percussion (C)</p> Signup and view all the answers

Which intra-canal medicament should not be used if the patient is allergic to iodine?

<p>Iodine potassium iodide (IKI) (D)</p> Signup and view all the answers

What is the appropriate management for a tooth with internal resorption detected years after a previous dental procedure and no symptoms?

<p>Observe (A)</p> Signup and view all the answers

What is the treatment for external resorption?

<p>Surgical removal of the resorbed tissue (C)</p> Signup and view all the answers

What is the treatment for subluxation?

<p>Reposition and stabilize the tooth (A)</p> Signup and view all the answers

Which type of material does sodium hypochlorite (NaOCl) dissolve in the root canal?

<p>A. Organic material (D)</p> Signup and view all the answers

What is the best way to apply sealer to the root canal?

<p>B. Lentulo spiral (B)</p> Signup and view all the answers

A tooth without caries and has radiolucency at the cervical (neck) region is most likely experiencing:

<p>B. Cervical burn-out (D)</p> Signup and view all the answers

An avulsed tooth was removed from a patient's mouth 3 days ago, and the patient brought it in a dry plastic bag. What type of fixation should be used?

<p>C. Flexible splint for 2 weeks (D)</p> Signup and view all the answers

A 9-year-old patient with an avulsed tooth came to the clinic with the tooth after 2 days in a dry plastic bag. What is the appropriate management?

<p>A. Immediate re-implantation (A)</p> Signup and view all the answers

In a case with a fluctuant swelling in the periapical radiograph and radiolucency around the apex of a lower sixth tooth, what diagnostic test can help confirm the condition?

<p>A. MRI (Magnetic Resonance Imaging) (D)</p> Signup and view all the answers

In a long case, a patient reports feeling pain when consuming sweet foods, and the pain is momentary and relieved when the cold sensitivity test is performed. What is the likely diagnosis?

<p>A. Reversible pulpitis (D)</p> Signup and view all the answers

Which is the recommended splinting time for an avulsed tooth if it was replanted within less than 60 minutes?

<p>2 weeks (D)</p> Signup and view all the answers

What is the most common complication associated with the use of Mineral Trioxide Aggregate (MTA)?

<p>Coronal leakage (B)</p> Signup and view all the answers

What is the primary component of gutta-percha, a material commonly used in endodontics?

<p>Gutta-percha (matrix) (B)</p> Signup and view all the answers

What are the primary components of gutta-percha used in root canal obturation?

<p>20% gutta-percha (matrix), 66% zinc oxide (filler), 11% heavy metal sulfates (radio pacifiers), 3% waxes and/or resins (plasticizers) (A)</p> Signup and view all the answers

What is the recommended splinting time for an avulsed tooth if it was replanted within less than 60 minutes?

<p>2 weeks (D)</p> Signup and view all the answers

What is the most common complication associated with the use of Mineral Trioxide Aggregate (MTA)?

<p>Coronal leakage (B)</p> Signup and view all the answers

What is the primary component of gutta-percha, a material commonly used in endodontics?

<p>Gutta-percha (matrix) (B)</p> Signup and view all the answers

What are the primary components of gutta-percha used in root canal obturation?

<p>20% gutta-percha (matrix), 66% zinc oxide (filler), 11% heavy metal sulfates (radio pacifiers), 3% waxes and/or resins (plasticizers) (C)</p> Signup and view all the answers

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Study Notes

Diagnosing Cracked Tooth

  • A common method to diagnose a cracked tooth is by using a bite test.

Alveolar Fractures

  • The recommended splinting time for teeth with alveolar fractures is 2-4 weeks.

File Types

  • An active cutting tip is a characteristic of a K-type file.
  • A C+ file is commonly used to negotiate calcified canals.
  • The cutting length of an ISO file is 16mm.

Pain Transmission

  • A-delta fibers transmit sharp pain, while C-fibers transmit dull pain.

Tissue Healing

  • The best material that allows tissue healing around the apex is calcium hydroxide.

Patency File

  • A patency file is a type of file used to maintain apical patency.

Fungi in Failed Root Canals

  • Candida and Aspergillus are commonly found in failed root canal treatments.

pH Levels

  • The highest pH is found in calcium hydroxide (pH 12.5).
  • Sodium hypochlorite has a pH of 11-12.

Cracked Tooth Symptoms

  • Releasing the bite in a cracked tooth can cause pain.

Sodium Hypochlorite Accidents

  • Sodium hypochlorite accidents often result from inadequate irrigation or instrumentation.

Irreversible Pulpitis

  • The recommended emergency treatment for irreversible pulpitis is pulp necrosis.

Instrumentation

  • If the master apical file does not reach the working length, the appropriate management is to use a pre-curved file or a file with a greater taper.

Tooth Anatomy

  • A single canal is most commonly found in the maxillary central incisor.
  • Approximately 15% of teeth have a single canal with two foramens.

Bacteria in Necrotic Pulp

  • The predominant bacteria in the necrotic pulp are anaerobic bacteria.

Dental File Use

  • The primary use of a dental file is for shaping and cleaning the root canal.

Root Canal Treatment

  • A diagnostic test to confirm a periapical radiolucency is a periapical radiograph.
  • Swelling, pain, and a chlorine-like smell during root canal treatment may indicate a sodium hypochlorite accident.

Avulsed Teeth

  • The recommended splinting time for an avulsed tooth if it was replanted within less than 60 minutes is 1-2 weeks.
  • The most common complication associated with the use of Mineral Trioxide Aggregate (MTA) is tooth discoloration.

Gutta-Percha

  • The primary component of gutta-percha is trans-isoprene.
  • The primary components of gutta-percha used in root canal obturation are trans-isoprene and zinc oxide.

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