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History: A 6-year-old boy presented to the pediatric dentist, referred by a family dentist, because of unusual discoloration of the anterior teeth.
The boy’s past medical history was remarkable for a genetic condition, the name of which the parents couldn’t recall. The parents also mentioned the presence of kidney stones (diagnosed one year prior), spinal cord “issues,” and occasional knee pain.
The extraoral exam revealed frontal bossing. The intraoral exam revealed a clinical abscess apical to tooth #I. (Click to enlarge the image.) No caries were observed, and there was no history of trauma.
The pediatric dentist ordered a periapical radiograph. Click to enlarge.
What is the LEAST likely diagnosis in relation to tooth #I?CorrectIncorrect
Which of the following is associated with non-caries dental abscesses?CorrectIncorrect
The pediatric dentist consulted with the pediatrician to clarify the boy’s medical history. The genetic condition that the patient’s parents couldn’t remember was X-linked hypophosphatemia (XLH), which he had been diagnosed with at age 4.
The pediatric dentist met with the parents and recommended extracting tooth #I.
What dental characteristics are typical in patients with XLH?CorrectIncorrect