55 Questions
Which of the following is a common method to diagnose a cracked tooth?
Radiographic evidence of fracture
How long is the recommended splinting time for teeth with alveolar fractures?
4 weeks
Which type of file has an active cutting tip?
K file
Which file is commonly used to negotiate calcified canals?
Reamer
What is the cutting length of an ISO file?
16 mm
Which type of fibers transmit dull pain?
Unmyelinated fibers
What is the best material that allows tissue healing around the apex?
Calcium hydroxide
What is a patency file?
Small flexible K-file, which is passively moved through the apical constriction
Which fungi are commonly found in failed root canal treatments?
Candida albicans
Which of the following has the highest pH?
Sodium hypochlorite (NaOCl)
Which of the following is a common cause of pain when releasing the bite in a cracked tooth?
Block line in Transillumination
What is the recommended splinting time for teeth with alveolar fractures?
6 weeks
Which type of file is commonly used to negotiate calcified canals?
K file
What is the cutting length of an ISO file?
21 mm
Which type of fibers transmit dull pain?
Unmyelinated fibers
What is the best material that will allow tissue healing around the apex?
Calcium hydroxide
Which fungi are commonly found in failed root canal treatments?
Aspergillus niger
Which of the following has the highest pH?
Sodium hypochlorite (NaOCl)
What is the pH of sodium hypochlorite?
13
What is the term for the extrusion of Gutta-percha and sealer out in the distal side of the mesial root of a molar?
Strip perforation
During irrigation, the patient experiences pain and profuse bleeding. What complication is likely occurring?
Sodium hypochlorite (NaOCl) accident
Swelling, pain, and a chlorine-like smell during root canal treatment may indicate a:
Sodium hypochlorite accident
Sodium hypochlorite (NaOCl) accidents often result from:
Failure to use a lubricant during instrumentation
What is the recommended emergency treatment for irreversible pulpitis?
Root canal therapy
During instrumentation, the master apical file does not reach the working length. What is the appropriate management?
Bypass with a small, curved file
In which tooth is a single canal most commonly found?
Upper canine (cuspid) or upper central incisor
What type of bacteria is predominant in the necrotic pulp?
Anaerobic
What is the primary use of a dental file?
To shape the canal
Approximately what percentage of teeth have a single canal with two foramens?
33%
What color is typically used for a file size 35?
Yellow
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?
Healing
Which tooth can exhibit all 8 configurations (i.e., upper 5)?
Upper 5 (Maxillary first premolar)
What part of the pulp does an electric pulp test primarily act on?
Neural element of pulp
What material is considered best for repairing a perforation?
Bioceramic (MTA)
A fracture that involves cementum, enamel, and dentin, but does not involve the pulp, is termed:
Crown-root fracture without pulp involvement
What is a concussion injury to a tooth characterized by?
Marked tenderness to percussion
Which intra-canal medicament should not be used if the patient is allergic to iodine?
Iodine potassium iodide (IKI)
What is the appropriate management for a tooth with internal resorption detected years after a previous dental procedure and no symptoms?
Observe
What is the treatment for external resorption?
Surgical removal of the resorbed tissue
What is the treatment for subluxation?
Reposition and stabilize the tooth
Which type of material does sodium hypochlorite (NaOCl) dissolve in the root canal?
A. Organic material
What is the best way to apply sealer to the root canal?
B. Lentulo spiral
A tooth without caries and has radiolucency at the cervical (neck) region is most likely experiencing:
B. Cervical burn-out
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?
C. Flexible splint for 2 weeks
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?
A. Immediate re-implantation
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?
A. MRI (Magnetic Resonance Imaging)
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?
A. Reversible pulpitis
Which is the recommended splinting time for an avulsed tooth if it was replanted within less than 60 minutes?
2 weeks
What is the most common complication associated with the use of Mineral Trioxide Aggregate (MTA)?
Coronal leakage
What is the primary component of gutta-percha, a material commonly used in endodontics?
Gutta-percha (matrix)
What are the primary components of gutta-percha used in root canal obturation?
20% gutta-percha (matrix), 66% zinc oxide (filler), 11% heavy metal sulfates (radio pacifiers), 3% waxes and/or resins (plasticizers)
What is the recommended splinting time for an avulsed tooth if it was replanted within less than 60 minutes?
2 weeks
What is the most common complication associated with the use of Mineral Trioxide Aggregate (MTA)?
Coronal leakage
What is the primary component of gutta-percha, a material commonly used in endodontics?
Gutta-percha (matrix)
What are the primary components of gutta-percha used in root canal obturation?
20% gutta-percha (matrix), 66% zinc oxide (filler), 11% heavy metal sulfates (radio pacifiers), 3% waxes and/or resins (plasticizers)
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.
Test your dental knowledge with this quiz on cracked teeth, splinting time for alveolar fractures, and different types of dental files. Find out if you can diagnose a cracked tooth, determine the correct splinting time, and identify the file with an active cutting tip. Challenge yourself and expand your dental knowledge!
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