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锁是指上后牙舌尖的舌斜面与下后牙颊尖的颊斜面相咬合,或上后牙颊尖的颊斜面与下后牙舌尖的舌斜面相咬合,咬合面无接触,以正锁更为多见。锁主要表现在牙弓后段,早期不影响美观,常常不易被家长或患者本人发现。而多数牙正锁所表现的牙齿颊舌向、垂直向及近远中方向的异常,易引起颞下颌关节异常、咬合平面偏斜以及颜面部不对称等。多数牙正锁侧咀嚼功能较非锁侧低,且这种错畸形并不能随生长发育自行调整和改善,久而久之会增加骨性畸形程度和正畸治疗难度。多数牙正锁早期通过简单装置将牙齿移动到正确的位置,可建立良好的咬合诱导,建立口周肌肉平衡,以诱导下颌的正常生理功能,避免骨性错畸形的发生发展,建立和维持良好的口颌功能与健康。
Lock refers to the posterior lingual tongue tongue bevel and the lower posterior cheek buccal incisor occlusal, or buccal cuspidal buccal incisors and tongue posterior lingual bevel tongue phase occlusal, occlusal surface without contact, positive Lock more common. Lock mainly in the posterior segment of the arch, early does not affect the appearance, often not easy to find the parents or patients themselves. The majority of teeth are locked performance of the buccolingual, vertical and near and far in the direction of the anomaly, easily lead to temporomandibular joint anomalies, occlusal plane deflection and facial asymmetry. Most of the positive teeth are chewed side chewing function than the non-lock side of the low, and this wrong deformity and growth and development can not be adjusted and improved on their own, as time passes will increase the degree of skeletal deformity and orthodontic treatment. Most of the teeth are locked early through a simple device to move the teeth to the correct position, you can establish a good bite induction, the establishment of perioral muscle balance to induce the normal physiological function of the mandible to avoid the occurrence of skeletal malformations deformity, the establishment and Maintain good oral function and health.