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Endodontics - 3 Questions
Explanation: Flare-ups are more frequently observed in symptomatic teeth with pulp necrosis due to the inflammatory response and the complexity of the root canal system. This can lead to increased discomfort and complications during treatment, necessitating careful management.
Finally, if the tip of the gutta-percha condensation instrument breaks in the apical third of the root canal, the most common practice is to simply continue with the obturation up to the point of obstruction. Attempting to dissolve the gutta-percha or performing surgery to retrieve the broken piece may not be necessary and can potentially cause further damage. Instead, the area is sealed, and the body's natural healing processes are allowed to occur.
Discoloration due to pulp degeneration has the best prognosis for bleaching. This is because: 1) The staining is primarily from hemoglobin breakdown products which respond well to oxidizing agents, 2) The discoloration is usually uniform and not deeply embedded, 3) No metallic particles are involved, 4) Responds well to both vital and non-vital bleaching techniques. Tetracycline stains are difficult due to deep incorporation in dentin structure, restorative materials may contain metals, and erythroblastosis fetalis causes deep intrinsic staining that resists bleaching.
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