543416

When moderate extrusion of obturating material and sealer beyond the apex
occurs, it is undesirable for several reasons. While it does not necessarily
mean the prognosis is poor, there is a higher likelihood of postoperative
discomfort due to the potential for chemical irritation of the periapical
tissues. Additionally, if the sealer is not resorbed, it may cause a foreign
body reaction, and gutta-percha extrusion can sometimes lead to severe
periradicular reactions. The best approach in such a case is to obturate the
remaining canal up to the point of obstruction and observe the patient's
symptoms and healing response.

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Explanation: A concussion in dental trauma refers to a situation where the tooth
is not displaced but may have sustained an injury that can lead to an enamel
fracture. This type of injury does not involve loss of tooth structure, which
aligns with the description of an enamel fracture without tooth structure loss.

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The stabilization of an avulsed tooth typically requires a period of 1-2 weeks. During this time, the tooth is often replanted and stabilized to allow for healing and reattachment of the periodontal ligament.

570678

 Identifying Root Curvatures

Perception by instrumentation refers to the tactile
feedback that a dentist can obtain while using instruments during
procedures, allowing them to identify curvatures in the root canal system.

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310893

Explanation: Protruded anterior teeth are more susceptible to trauma and
fractures due to their position and exposure. This anatomical relationship
highlights the importance of considering tooth positioning in dental trauma
cases.

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Loss of Coronal Structure: During endodontic treatment, the
coronal portion of the tooth may be significantly altered or reduced, especially
if there is extensive decay or if a crown is required after treatment. The loss
of tooth structure compromises the tooth's ability to withstand occlusal forces.

679136

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.