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A, Panoramic radiograph of patient 1 at age 30 showing tooth agenesis of the mandibular left permanent first molar (arrow). B, Patient 2. Microdontia of the maxillary left second premolar (arrow). C, Panoramic radiograph of patient 2 at age 17. Microdontia of the maxillary left second premolar (arrow). Single-rooted maxillary third permanent molars are noted (asterisks).
