In cleidocranial dysplasia, roots of the permanent teeth are frequently observed to be_____________?
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Answer: B. thin and short
Explanation
Cleidocranial dysplasia frequently exhibits dental anomalies, including numerous impacted supernumerary teeth and roots. The roots of permanent teeth in affected individuals appear noticeably thin and short upon radiographic examination. Generalized skeletal and dental developmental delays are hallmark features of this inherited condition. Cleidocranial dysplasia is an autosomal dominant skeletal disorder caused by mutations in the RUNX2 transcription factor gene. Affected individuals typically exhibit delayed closure of cranial fontanelles and hypoplastic or absent clavicles. Failure of eruption of permanent teeth is a primary dental feature requiring complex orthodontic and surgical intervention.
Thin and long roots do not characterize the dental morphology typically associated with cleidocranial dysplasia presentations. Thick and short roots are characteristic of other specific developmental dental disorders rather than cleidocranial dysplasia. Fused teeth represent a distinct union anomaly that is not the primary defining root characteristic of this syndrome.
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