Dentine Hypersensitivity and Histology
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Questions and Answers

Which theory suggests that nerves directly transmit pain through the dentinal tubules?

  • Direct Innervation Theory (correct)
  • Hydrodynamic Theory
  • Odontoblast Receptor Theory
  • Osmosis Theory

    • What is a potential mechanical stimulus for exposed dentine?

  • Heavy lifting
  • Acid application
  • Hot beverages
  • Tooth brushing (correct)

    • What defines dentine hypersensitivity according to the Canadian Advisory Board?

  • Pain from exposed dentine in response to various stimuli that cannot be attributed to any dental defect (correct)
  • An allergic reaction to dental products
  • Unexplained pain in the jaw region
  • A response solely to thermal stimuli

    • Which of the following is NOT a way dentine becomes exposed?

    <p>Smoking</p> Signup and view all the answers

    What is the typical presentation of dentine hypersensitivity?

    <p>Rapid onset of sharp pain</p> Signup and view all the answers

    Which of the following factors can contribute to dentine hypersensitivity?

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

    What percentage of dentine volume is approximately water?

    <p>22%</p> Signup and view all the answers

    Which stimulus is associated with thermal responses in exposed dentine?

    <p>Cold drinks</p> Signup and view all the answers

    What mechanism is involved in the occurrence of dentine hypersensitivity?

    <p>Stimulus acting on a susceptible tooth</p> Signup and view all the answers

    What type of pain is typically associated with dentine hypersensitivity?

    <p>Short duration pain</p> Signup and view all the answers

    The Hydrodynamic Theory primarily involves which of the following concepts?

    <p>Fluid movement in dentinal tubules</p> Signup and view all the answers

    In which scenario does dentine hypersensitivity generally occur?

    <p>With a notable absence of other symptoms</p> Signup and view all the answers

    What effect does osmosis have in dental contexts with exposed dentine?

    <p>Draws fluid from pulp to the surface</p> Signup and view all the answers

    What type of dental surface loss includes erosion, abrasion, abfraction, and attrition?

    <p>Tooth surface loss (TSL)</p> Signup and view all the answers

    How can a dental professional aid a patient with dentine hypersensitivity?

    <p>Suggest preventive treatments and advice</p> Signup and view all the answers

    Which theory claims that odontoblast processes register stimuli at the tooth surface?

    <p>Odontoblast Receptor Theory</p> Signup and view all the answers

    What is the primary role of the dental therapist in the context of dentine hypersensitivity management?

    <p>To provide preventive care and education</p> Signup and view all the answers

    What is NOT a symptom associated with dentine hypersensitivity?

    <p>Pain lasting for several hours</p> Signup and view all the answers

    What best defines dentine hypersensitivity?

    <p>Increased sensitivity of dentine to stimuli</p> Signup and view all the answers

    What is critical for diagnosing dentine hypersensitivity?

    <p>Identifying a susceptible tooth</p> Signup and view all the answers

    Which of the following best describes the purpose of verbal history taking in dental examinations?

    <p>To determine sensitivity and pain triggers in the patient</p> Signup and view all the answers

    What is the first step a dental hygienist should take when diagnosing dentine hypersensitivity?

    <p>Identify aetiological factors</p> Signup and view all the answers

    During the clinical examination for dentine hypersensitivity, which aspect is essential to assess?

    <p>Dentine exposure and tooth morphology</p> Signup and view all the answers

    What actions can patients take at home to manage dentine hypersensitivity?

    <p>Use desensitizing agents</p> Signup and view all the answers

    Which of the following agents is NOT commonly used to manage dentine hypersensitivity?

    <p>Calcium carbide</p> Signup and view all the answers

    How do desensitizing agents work on dentinal tubules?

    <p>Occlude dentinal tubules</p> Signup and view all the answers

    Why is it important to understand triggers during history taking?

    <p>It assists in identifying the nature of the patient's pain</p> Signup and view all the answers

    What is a key factor to consider during the management of dentine hypersensitivity?

    <p>Patient's diet history</p> Signup and view all the answers

    Which statement about the clinical management of dentine hypersensitivity is true?

    <p>Patient education plays a significant role.</p> Signup and view all the answers

    What is NOT an objective of dental hygienists when managing dentine hypersensitivity?

    <p>Make a definitive medical diagnosis</p> Signup and view all the answers

    What is the role of proteins like arginine in addressing dentine hypersensitivity?

    <p>They allow chemical ions to adhere to the tooth surface.</p> Signup and view all the answers

    Which of the following agents is NOT mentioned as a treatment for occluding dentinal tubules at home?

    <p>Bioactive glass toothpaste</p> Signup and view all the answers

    What effect does potassium Nitrate have on the intradental nerves?

    <p>It depolarizes the nerve fiber membrane.</p> Signup and view all the answers

    What is the most effective way to ensure the benefits of fluoride agents last longer?

    <p>Use them continuously on a daily basis.</p> Signup and view all the answers

    What compounds do fluoride agents form to block dentinal tubules?

    <p>Calcium phosphate and fluoroapatite.</p> Signup and view all the answers

    Which statement correctly describes a characteristic of solutions used for dentinal tubule occlusion?

    <p>They can provide immediate relief but are often temporary.</p> Signup and view all the answers

    Why should patients 'spit, don’t rinse' after using fluoride treatments?

    <p>To allow chemicals to remain close to the tooth surface.</p> Signup and view all the answers

    What is the mechanism by which potassium increases tooth sensitivity?

    <p>It causes sustained depolarization of the nerve membrane.</p> Signup and view all the answers

    What is the primary effect of using higher concentrations of fluoride?

    <p>Greater ability to occlude dentinal tubules.</p> Signup and view all the answers

    Which professional treatment approach for dentinal hypersensitivity is considered straightforward?

    <p>Fluoride gel application.</p> Signup and view all the answers

    Study Notes

    Dentine Hypersensitivity

    • Dentine hypersensitivity is a painful condition affecting exposed dentine.
    • Pain presents as short duration, rapid onset, sharp pain that quickly resolves, in the absence of other symptoms.
    • This pain is triggered by a stimulus on a susceptible tooth.
    • Susceptible teeth have exposed dentine and cementum.
    • Dentine tubules, which connect the dentine to the pulp, contain fluid and nerves.

    Histology of Enamel and Dentine

    • The slides depicted different layers of tooth structure, including enamel, cementum, and dentine.
    • Enamel overlaps the cementum in 60-65% of cases, leaving only 30% in edge to edge contact.
    • Approximately 5-10% of teeth don't have a complete overlap of enamel and cementum.

    Aetiology and Pathogenesis of Dentine Hypersensitivity

    • The aetiological factors that cause dentine hypersensitivity include localised gingival recession, nail biting, opening items, piercings, high frenum, periodontal disease, lack of keratinised tissue, and orthodontic treatment.
    • Tooth surface loss from erosion, abrasion, abfraction, or attrition are also contributing causative factors.

    Learning Outcomes

    • Dental professionals should understand oral diseases and their relevance to prevention, diagnosis, and treatment.
    • Professionals should identify the cause of a patient's pain, factors related to pain (e.g. dietary history, oral hygiene demonstrations), educate the patient on the issue and provide preventative treatment and advice.
    • Specialists should recognize the importance of comprehensive and contemporaneous patients' history.
    • They should identify the significance of changes in patients' reported oral health status and take appropriate action.
    • Professionals should understand the role of the dental therapist and other members of the dental team.

    GDC Learning Outcomes Summary

    • Understanding oral diseases and their role in prevention, diagnosis, and treatment is essential.
    • Recording a complete patient history is crucial.
    • Recognizing and addressing changes in oral health is important.
    • The dental team's roles in patient treatment need definition.

    Diagnosis and Management of Dentine Hypersensitivity

    • Patients' history should be taken (verbal history) to determine the pain's source.
    • Examination of the teeth and any possible exposed dentine is required for diagnosis
    • The diagnosis of dentine hypersensitivity should be confirmed if there are no underlying dental defects or disease.
    • Self-care treatments can be advised (e.g., specific toothpastes, fluoride use).
    • Professional treatment is sometimes required.

    Mechanisms of Action of Dentine Hypersensitivity Treatments

    • Treatments target removing the stimulus, desensitizing the nerves, or preventing tubule exposure.
    • Specific agents (e.g., calcium, fluoride, potassium) can be used to occlude tubules.
    • Treatments create an occluding layer in the tubules that temporarily prevents exposure or block irritants.
    • The effectiveness of these agents is temporary.

    Solutions for Dentine Hypersensitivity

    • Treatment protocols are used to create a long lasting effect e.g., use of chemicals that precipitate in acidic environment, increased fluoride, proteins to allow chemicals to stick to the tooth surface etc.

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    Related Documents

    Dentine Hypersensitivity PDF

    Description

    This quiz covers the painful condition of dentine hypersensitivity, focusing on its causes, symptoms, and the histological aspects of tooth structure, including enamel and cementum. Test your understanding of the factors contributing to this condition and the anatomy of teeth.

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