Buccal Crossbite — NDEB AFK MCQ
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Correct answer: E — Buccal crossbite
A buccal crossbite (posterior crossbite) occurs when the buccal cusps of the mandibular posterior teeth are positioned buccal to the buccal cusps of the maxillary posterior teeth. This is the most common type of posterior crossbite and is usually caused by maxillary constriction (narrow maxilla). A scissor bite (Brodie bite) is the opposite — the maxillary teeth are completely buccal to the mandibular teeth with no occlusal contact. Buccal crossbites may be skeletal (maxillary deficiency) or dental (tooth tilting).
Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019