Pediatric Dentistry · single question
Panoramic and clinical photos show posterior open bite with primary molar below the occlusal plane. Most likely cause?
Show answer and explanation
Correct answer: C. Ankylosis of the primary molar
ANKYLOSIS: tooth fuses to alveolar bone, preventing normal eruption. Surrounding bone grows past it (infraocclusion). Adjacent permanent teeth continue erupting normally → POSTERIOR OPEN BITE. Classic submerged/infraoccluded primary molar.
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