Dentin Hypersensitivity Quiz
36 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the age range where dentin hypersensitivity is most prevalent?

  • 40-60 years
  • 60-80 years
  • 10-20 years
  • 20-40 years (correct)

    • What is the main mechanism proposed for dentin hypersensitivity?

  • Neural theory
  • Odontoblastic transduction theory
  • Hydrodynamic theory (correct)
  • None of the above

    • What is the most common location for dentin hypersensitivity on the tooth surface?

  • Occlusal surface
  • Cervical margin (correct)
  • Mesial surface
  • Distal surface

    • Which of the following stimuli is least likely to cause dentin hypersensitivity?

    <p>Probing with an instrument (B)</p> Signup and view all the answers

    What is considered the most significant factor in the development of dentin hypersensitivity?

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

    How does tooth wear contribute to dentin hypersensitivity?

    <p>Directly exposes dentin by wearing enamel away (A)</p> Signup and view all the answers

    Why is the area of the cemento-enamel junction particularly susceptible to dentin hypersensitivity?

    <p>The enamel is thinner in this region (B)</p> Signup and view all the answers

    Which of these is not a proposed mechanism for dentin hypersensitivity?

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

    Which of the following conditions can potentially cause gingival recession?

    <p>Excessive use of oral hygiene devices (A), Periodontal Treatment (B), All of the above (D)</p> Signup and view all the answers

    What is a common contributing factor to dentin hypersensitivity?

    <p>Removal of the smear layer or tubular plugs (A)</p> Signup and view all the answers

    What is a potential consequence of excessive tooth bleaching?

    <p>Increased tooth sensitivity (D)</p> Signup and view all the answers

    Which of the following is a contributing factor to gingival recession NOT directly related to oral hygiene practices?

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

    What is NOT a medical condition that can potentially lead to dentin hypersensitivity?

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

    Which of the following oral hygiene techniques can contribute to gingival recession, as mentioned in the text?

    <p>Using a hard-bristled toothbrush with an aggressive technique (C)</p> Signup and view all the answers

    Which of the following statements is TRUE about dentin hypersensitivity?

    <p>Acid erosion is a major factor potentially leading to dentin hypersensitivity. (C)</p> Signup and view all the answers

    What is a potential recommendation to alleviate dentin hypersensitivity after bleaching?

    <p>All of the above (D)</p> Signup and view all the answers

    What is a recommended dietary modification for reducing dentin hypersensitivity?

    <p>Using a straw to consume acidic beverages. (B)</p> Signup and view all the answers

    Which of the following is NOT a mechanism by which natural desensitization occurs?

    <p>Erosion of enamel. (D)</p> Signup and view all the answers

    What is the mode of action of potassium nitrate in the treatment of dentin hypersensitivity?

    <p>Reduction of nerve excitability. (B)</p> Signup and view all the answers

    How do professionally fabricated occlusal night guards help prevent dentin hypersensitivity?

    <p>By reducing tooth wear. (D)</p> Signup and view all the answers

    Which of these is a key difference between natural and clinical desensitization?

    <p>Clinical desensitization is performed by a dental professional. (B)</p> Signup and view all the answers

    Why is it important for patients to avoid rinsing their mouths with water immediately after using desensitizing toothpaste?

    <p>Water can wash away the desensitizing agents before they can take effect. (A)</p> Signup and view all the answers

    Which of the following is NOT mentioned as a common cause of dentin hypersensitivity?

    <p>Excessive consumption of sugar. (C)</p> Signup and view all the answers

    Which of the following statements accurately reflects the role of dietary modifications in treating dentin hypersensitivity?

    <p>Dietary modifications are primarily used for preventing dentin hypersensitivity. (B)</p> Signup and view all the answers

    Which of the following diagnostic tools can be used to differentiate dentin hypersensitivity from pulpal pain?

    <p>Percussion testing (B), Pulp vitality testing (D)</p> Signup and view all the answers

    A patient describes pain that is sharp, localized, brief, and triggered by cold or sugary foods. What is the most likely diagnosis?

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

    Which of the following is NOT a characteristic that helps distinguish pulpal pain from dentin hypersensitivity?

    <p>Location of pain (D)</p> Signup and view all the answers

    A patient experiencing pain while chewing is most likely suffering from:

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

    Which of the following treatment methods is NOT mentioned as being useful in managing dentin hypersensitivity?

    <p>Using an electric toothbrush (C)</p> Signup and view all the answers

    What is the primary reason for recommending a reduction in treatment time when managing bleaching sensitivity?

    <p>To reduce the potential for irritation and discomfort (C)</p> Signup and view all the answers

    Which of the following agents is NOT commonly used for in-office treatment of dentin hypersensitivity?

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

    How does potassium nitrate work to reduce dentin sensitivity?

    <p>It reduces nerve excitability (A)</p> Signup and view all the answers

    Which of these is a benefit of using strong and adhesive materials for topical desensitization?

    <p>They provide longer-lasting desensitization (A)</p> Signup and view all the answers

    Why is it important for a desensitizing agent to be non-irritant to the pulp?

    <p>To minimize the possibility of damage to the nerve (A)</p> Signup and view all the answers

    Which of the following substances is NOT mentioned as a potential treatment for dentin hypersensitivity?

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

    What is the primary mechanism by which fluorides reduce dentin sensitivity?

    <p>By decreasing dentin permeability (B)</p> Signup and view all the answers

    Study Notes

    Dentin Hypersensitivity

    • Defined as short, sharp pain from exposed dentin due to stimuli (thermal, evaporative, tactile, osmotic, or chemical), not attributable to other dental issues.

    Prevalence

    • Affects 60-98% of patients with periodontitis.
    • Can occur after periodontal procedures (deep scaling, root planning, gingival surgery).
    • Can also occur after tooth whitening and restorative procedures.
    • Peak incidence between 20 and 40 years of age.
    • Females more commonly affected than males.

    Mechanisms of Dentin Sensitivity

    • Hydrodynamic theory is the accepted mechanism: A stimulus applied to dentin increases dentinal tubular fluid flow. This activates nerves in the inner pulp or outer pulp layers.
    • Cooling, drying, evaporation, and hypertonic chemicals stimulate fluid movement more than other stimuli (like heating or probing).

    Localization and Incidence

    • More than 90% of hypersensitive areas are at the cervical margin on buccal or labial aspects of teeth.
    • Common age range is 20-40 years.
    • Buccal cervical zones are prevalent.
    • Canines, first premolars, incisors, second premolars, and molars are often affected.
    • Right-handed individuals.

    Etiology of Dentin Hypersensitivity (DH)

    • Exposure of dentin is the cause, either due to enamel loss or gingival recession.
    • Gingival recession is the more crucial factor.
    • Normal tooth brushing does not cause enamel loss but may contribute to gingival recession.

    Loss of Enamel

    • Enamel and cementum can be lost gradually or suddenly.
    • Sudden exposure leads to acute hypersensitivity.
    • Cemento-enamel junction often has a thin enamel layer, making it susceptible to tooth structure loss.
    • Tooth wear can be caused by abrasion, erosion, abfraction, or attrition leading to exposed dentin.

    Gingival Recession

    • Gingival recession is a precursor to cementum loss and dentin exposure.
    • Excessive use of oral hygiene devices can cause recession.
    • Toothbrush type and technique contribute to factors.
    • Periodontitis, necrotizing ulcerative gingivitis, and viral disorders like HIV can cause recession.
    • Surgical or nonsurgical periodontal procedures may cause gingival recession and root exposure.

    Bleaching Considerations

    • Bleaching agents can cause or increase dentin sensitivity.
    • Approximately 25% of those who bleach their teeth experience hypersensitivity.
    • Potassium nitrate toothpaste, concentrated desensitizing gels, reducing bleaching time, and using fluoride after bleaching are used as countermeasures.
    • Lower peroxide concentrations (10-15%) are recommended.

    Initiation of Dentin Sensitivity

    • Removing the smear layer or tubular plugs exposes the outer ends of dentinal tubules.
    • Abrasion and acid erosion are potential factors.
    • Plaque is not a significant factor; patients tend to have good plaque control.

    Diagnosis and Assessment

    • Medical History: Excessive vomiting, GERD, antacid use, alcoholism, autoimmune diseases (e.g., Sjögren's), oral dryness, radiation, medications affecting salivary function.
    • Dental History: Bruxism, occlusal guard use, prior dental procedures.
    • Dietary History: Acidic food and beverage frequency.
    • Oral Hygiene Methods: Tooth brushing method, frequency, dentifrice type, mouth rinses, topical fluorides.
    • Clinical Evaluation: Dental explorer, periodontal probe, air jet, pulp vitality testing, percussion testing, radiographs (if needed), and occlusal assessment.

    Differential Diagnosis

    • Differentiate between dentin and pulp pain.
    • Dentin pain, triggered by a stimulus, generally resolves following stimulus removal.

    Prevention

    • Dietary Modifications: Avoid acidic foods & drinks; use a straw for acidic beverages; consume neutralizing/alkaline substances after acidic foods and drinks.
    • Parafunctional Habits: Reduce or eliminate clenching & grinding. Use occlusal guards.

    Management

    • Natural Desensitization: Involves sclerosis of dentin, reparative/tertiary dentin deposition, smear layer formation, and calculus.
    • Clinical Desensitization: Two main strategies:
    • Nerve desensitization (e.g., potassium nitrate)
    • Covering or plugging dentinal tubules
    • Treatment Modes: Includes both at-home (e.g., toothpastes, mouthwashes) and in-office (e.g., topical desensitizing agents, fluoride application) treatments.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Dentin Hypersensitivity PDF

    Description

    Test your knowledge on dentin hypersensitivity, including its prevalence, mechanisms, and contributing factors. This quiz covers various aspects such as stimuli that provoke sensitivity and conditions that may lead to gingival recession. Challenge yourself to see how well you understand the key concepts related to dentin hypersensitivity!

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser