Which of the following is a key consideration in treating an intruded permanent incisor?

The correct choice emphasizes the importance of X-ray assessment when treating an intruded permanent incisor. This imaging technique is crucial in evaluating the extent of the intrusion, the position of the tooth, and any potential damage to surrounding structures, such as the periodontal ligament or the alveolar bone. X-rays allow dental professionals to gather important information that guides the treatment plan, enabling an accurate determination of whether the tooth can be successfully repositioned or if further intervention is necessary.

Other options, while they might be considered in specific scenarios, are not as foundational. Immediate repositioning may not be appropriate without first understanding the situation through imaging, as it could risk further damage. Extraction would typically only be considered in cases where the tooth cannot be saved or if the intrusion has caused irreparable damage. The application of antibiotics might be relevant in managing infections, but it does not directly address the immediate concern of repositioning an intruded tooth. Thus, X-ray assessment stands out as a critical step in ensuring effective and safe treatment.