A scissor bite is defined as buccal displacement of a maxillary posterior tooth, with or without contact between the lingual surface of the maxillary lingual cusp and the buccal surface of the mandibular antagonist's buccal cusp. A complete buccal crossbite, known as a Brodie bite, is caused by a combination of excessive maxillary width and a narrow mandibular alveolar process, although the width of the mandibular base is usually normal.3 If the mandibular dentition is completely contained within the maxillary arch, the patient can develop severe occlusal difficulties, including an inability to make lateral excursions. This rare condition can be challenging to correct, even with surgical-orthodontic treatment.
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