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KMID : 1149720200100030177
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Clinical Journal of Korean association of Orthodontists
2020 Volume.10 No. 3 p.177 ~ p.191
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Non-Surgical Treatment of Multiple Posterior Scissors Bite
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Park Jin-A
Cha Bong-Kuen
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Abstract
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This case report illustrates a successful nonsurgical orthodontic treatment of two patients with a bilateral or
unilateral scissors bite on the posterior teeth. The first patient was a 15-year-old boy who was diagnosed with Class
II malocclusion with bilateral scissors bite. A mandibular lingual arch and a modified transpalatal arch (TPA) with
preadjusted edgewise appliances were used to correct the bilateral scissors bite. After active treatment of 38 months,
the facial profile was improved and good interdigitation with ideal incisor relationship was achieved. The other was
a 20-year-old man who was diagnosed with Class I malocclusion with scissors bite on the right posterior teeth. Glass
ionomer bite blocks were bonded on the left mandibular posterior teeth, and two miniscrews were inserted in the right
mandibular buccal shelf for intrusion and uprighting of the posterior teeth. Intrusion and contraction of the maxillary
arch were performed using modified TPA and miniscrews. After active treatment of 14 months, the unilateral scissors
bite on the right side was corrected and appropriate occlusion was achieved. The treatment results suggest that lower
lingual arch, modified TPA, miniscrews and bite blocks were effective for correction of the scissors bite on multiple
posterior teeth without surgical intervention.
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KEYWORD
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Scissors bite, Nonsurgical orthodontic treatment, Lingual arch, Modified transpalatal arch, Temporary anchorage devices
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