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Questions and Answers
What was the main concern related to the acidic pH during etching?
Which product was found to be effective compared to placebo several weeks after treatment?
In a trial comparing different toothpastes, what was found to be more effective than a professionally applied desensitizing agent?
Which of the following contemporary desensitizing agents offers a potential solution for dentin hypersensitivity?
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What long-term effects are thought to reduce dentin hypersensitivity?
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What is the primary characteristic of dentin hypersensitivity?
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Which dental surfaces are most commonly affected by dentin hypersensitivity?
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Which of the following factors is NOT typically associated with dentin hypersensitivity?
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What leads to dentin becoming hypersensitive in affected areas?
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What type of agents are typically used to alleviate dentin hypersensitivity?
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What is one method that has been developed for a more lasting solution to dentin hypersensitivity?
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What is a potential limitation of applying passive molecules or crystals for dentin hypersensitivity?
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Which contemporary desensitizing agent is derived from a mineral similar to tooth structure?
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Which of these agents is specifically cited as having a concentration of 5% for managing teeth sensitivity?
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Study Notes
Dentin Hypersensitivity
- Characterized by sharp, brief pain in response to stimuli, like heat, cold, touch, and acidity.
- Often occurs on exposed dentin in teeth, especially root surfaces.
- Causes: Excessive brushing, periodontal disease, erosion from dietary or gastric acids.
- Dentin hypersensitivity is likely due to lack of cementum protection, loss of the smear layer, and the hydrodynamic movement of fluid in the dentin tubules.
Management of Dentin Hypersensitivity
- Neural-modulating agents like potassium nitrate can help temporarily.
- Tubule-blocking agents like strontium chloride, oxalates, and dentin bonding agents can also offer temporary relief.
- Biocompatible materials that bond to the root surface provide longer-lasting solutions, for example, calcium sodium phosphosilicate bioactive glass.
- Calcium oxalate and acid-etched bonding material combination products, like BisBlock, seal the dentinal tubules effectively.
- Desensitizing toothpastes containing sodium fluoride and potassium nitrate are shown to be effective.
- Professional desensitizing agents like Seal and Protect can also significantly reduce hypersensitivity.
- Other effective treatments include nano-hydroxyapatite, laser treatment, HEMA and glutaraldehyde primer, 3% oxalate, and home products containing 8% arginine/NaF or 5% potassium nitrate.
Long-Term Prevention of Dentin Hypersensitivity
- Development of a smear layer from tooth brushing can help over time.
- Dentin sclerosis and reactionary dentin formation naturally block tubules.
- Tubule blockage with large endogenous macromolecules can reduce hypersensitivity.
Desensitizing Agents
- Nano-hydroxyapatite is an effective desensitizing agent.
- Laser treatment is an effective desensitizing agent.
- HEMA and glutaraldehyde primer is another effective desensitizing agent.
- 3% Oxalate is also an effective desensitizing agent.
- Home products containing 8% arginine/NaF or 5% potassium nitrate are also deemed effective desensitizing agents.
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