Tooth malposition Cross bite 2021-05-07T11:30:03Z Lingual occlusion of buccal cusps and/or incisal edge of maxillary teeth to the buccal cusps and/or incisal edge of mandibular teeth. Cross bite may occur unilaterally, bilaterally, or frontally. A total cross bite with buccal displacement of the maxillary posterior teeth, with or without contact between the lingual surface of the maxillary lingual cusp and the buccal surface of the buccal cusp of its mandibular antagonist, has been called scissor bite. If only a single tooth is affected, the term single cross bite can be used.