Angle Orthod. 2024 Jul 1;94(4):462-472. doi: 10.2319/112923-790.1.
A bone-borne full-arch vertical control strategy using miniscrews was deployed with aligners to treat a case of skeletal hyperdivergent Class II malocclusion with bimaxillary protrusion. Miniscrews were inserted in the posterior buccal and palatal regions and the anterior buccal region of the maxilla to distribute vertical intrusive force through the upper arch by anchoring vertical elastics from the miniscrews to the aligners. Synergetic lower anterior intrusion was completed using bilateral posterior miniscrews to counteract the extrusive force generated. Substantial full upper arch and lower anterior vertical intrusion was achieved. In conjunction with en masse anterior-posterior retraction, synergetic posterior and anterior vertical intrusion facilitated counterclockwise rotation of the mandible, creating significant esthetic improvement. Anterior vertical elastics also provided flaring of the anterior teeth, reducing the side effect of lingual tipping from en masse retraction, while successfully controlling overbite and incisor torque during space closure. The bone-borne full-arch vertical intrusion strategy can work well with aligners to address hyperdivergent skeletal Class II malocclusion with bimaxillary protrusion.
采用微螺钉骨支抗的全牙弓垂直控制策略结合直丝弓矫治技术治疗一例上颌前突的骨性高角二类错[牙合]。微螺钉分别植入上颌后颊侧、腭侧和前颊侧，通过在上颌弓上用垂直弹性橡皮圈将微螺钉与直丝弓连接，分散施加的垂直压入力。双侧后牙区的微螺钉协同产生的下前牙整体内收，以对抗产生的牙弓外展力。实现了上牙弓的大量整体前牙垂直压入和下前牙垂直压入。结合前牙后移，后牙和前牙的协同垂直压入有助于下颌逆时针旋转，显著改善美观。前牙垂直弹性橡皮圈也提供了上前牙的唇倾，减少了前牙整体后移产生的舌倾副作用，同时在关闭间隙时成功控制了覆[牙合]和切牙转矩。骨支抗全牙弓垂直压入策略与直丝弓矫治技术结合，可有效治疗上颌前突的骨性高角二类错[牙合]。
