Podcast
Questions and Answers
What is the main component of dentine?
What is the main component of dentine?
Water
What are the two main factors that contribute to dentine hypersensitivity?
What are the two main factors that contribute to dentine hypersensitivity?
Stimulus and susceptible tooth
What are some examples of stimuli that can cause dentine hypersensitivity? (Select all that apply)
What are some examples of stimuli that can cause dentine hypersensitivity? (Select all that apply)
What are some examples of susceptible tooth characteristics that can contribute to dentine hypersensitivity? (Select all that apply)
What are some examples of susceptible tooth characteristics that can contribute to dentine hypersensitivity? (Select all that apply)
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Which of the following theories attempts to explain the mechanism of dentine hypersensitivity by proposing that the movement of fluid within the dentine tubules triggers a response in the nerve endings?
Which of the following theories attempts to explain the mechanism of dentine hypersensitivity by proposing that the movement of fluid within the dentine tubules triggers a response in the nerve endings?
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Dentine hypersensitivity pain is typically a long-lasting sensation.
Dentine hypersensitivity pain is typically a long-lasting sensation.
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Study Notes
Dentine Hypersensitivity
- Dentine hypersensitivity is characterized by short duration, rapid onset, and sharp pain, quickly resolving.
- It results from the exposed dentine surface, which lacks the protective enamel layer.
- The pain originating from the exposed dentine in response to chemical, thermal, or tactile stimuli.
- This pain cannot be explained by other dentine defects.
Susceptible Tooth Surface
- Healthy teeth: Dentine is encased by enamel and covered by gingival tissue.
- Unhealthy teeth: Gingival recession exposes dentine.
Theories on How Pain is Registered
- Direct Innervation Theory: Pain signals are directly transmitted to the nerves.
- Odontoblast Receptor Theory: Odontoblasts' receptors detect stimuli.
- Hydrodynamic Theory: Fluid movement (osmosis) through the dentine tubules triggers pain. Approximate 22% of dentine volume is water.
Stimulants
- Thermal: Hot and cold temperatures
- Chemical: Acids (e.g., removing smear layers during whitening), acidic cleaning
- Mechanical: Forces like tooth brushing, eating, and breathing.
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Description
This quiz explores the concept of dentine hypersensitivity, its characteristics, and its causes. Learn about the factors that lead to pain in dentine, including the theories of pain registration and the stimulants that affect sensitive teeth. Test your knowledge on how dentine exposure impacts dental health.
