Early Crossbite Correction Age — NDEB AFK MCQ

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ModerateOrthodonticsEarly Crossbite Correction AgeNDEB AFK

Crossbite correction in the primary dentition using a bonded acrylic palatal expander is best performed at which age?

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Correct answer: A — Age 4-6 years (in the primary or early mixed dentition)

Early correction of posterior crossbite in the primary or early mixed dentition (age 4-6 years) is recommended because: (1) untreated crossbites do not self-correct and may cause asymmetric mandibular growth; (2) the midpalatal suture is still patent and responsive to expansion at this age; (3) early correction prevents functional mandibular shifts that can lead to skeletal asymmetry; and (4) treatment is simpler in the primary/early mixed dentition. Bonded acrylic palatal expanders or quad-helix appliances are commonly used.

Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019