前磨牙

Van Beek's activator appliance could restrict the growth of maxilla and stimulate the growth of mandible in horizontal direction and control jaws posteroinferior rotation , lower front teeth and elongate mandibular molar in vertical direction.

Beek功能矫正器能在水平方向产生抑制上颌骨生长，刺激下颌骨生长；在垂直方向控制上下颌骨后下旋转，压低上下前牙及伸长下磨牙的效果。

Results: The average value of periodontal attachment level in the healthy adults was 5.03 mm in incisor zone, 2.93 mm in bicuspid zone, and 3.45 mm in molar zone.

结果 ：健康成年人牙周附着水平平均值前牙区为 5 。0 3mm、双尖牙区为 2 。93mm、磨牙区为 3.45mm。

Results: All patients were treated to Class I molar and normal overjet and overbite relationships at posttreatment,.

结果：两组患者均达到了磨牙中性关系，前牙达到正常的覆盖、覆关系，并产生了以下变化。

In all case, centric relationship of canine and 1st molar was obtained, with normal overbite and over-jet of anterior teeth.

全部病例均达到尖牙和磨牙的Ⅰ类关系、牙列整齐、前牙覆覆盖正常。

The static loads were simulated according to the restored and unrestored situation. The stress distribution and stress level of the second molar was recorded.

并在修复前对两个基牙加载，修复后对固定桥进行加载，观察第二磨牙牙槽骨的应力分布变化情况。

Methods: 62 cases with anterior deep overbite were treated with a modified appliance which was composed of four parts-the anterior bite plate,the anchorage on the second molars,the rectangular wire with higher elasticity and intermaxilla traction.

该矫治方法由前牙平导板、高弹性方弓丝、第二磨牙设计支抗、后牙颌间垂直牵引等组成。结果：经临床应用2 年，共62 例，效果良好。平均疗程4 个月。

Methods The majority patients were Corrected with edgewise appliance after draw four molars, all sorts of flexure were curved on the appliance, used perpendicular traction for anterior teeth and II, III maxillomandibular traction, fine adjust intercuspal position ,tip and cavity.

多数患者采取拔除4个磨牙之后使用方丝弓矫治器矫治，矫治中在弓丝上弯制各种曲，并使用前牙垂直牵引和颌间Ⅱ类、Ⅲ类牵引，精调牙位及尖窝关系。

After 4~8 months, in adult bimaxillary protrusion patients, cuspids were moved to distal, the upper first molars were moved 1.12mm mesially evenly, and the upper incisors were moved 7.91mm palatelly evenly.

成人双颌前突患者在4～8个月后远移尖牙到位，拔牙间隙基本关闭，上颌第一磨牙为近中整体前移，其冠部平均前移了1.12mm，上颌切牙冠部平均向腭侧倾斜移动约7.91mm。

Results The bruxism episodes per hour decreased after wearing stabilization splint for 2 weeks,but the incidence of micro-arousal and the sleep stage did not change.

结果 使用稳定牙合垫2周后，每小时磨牙事件比治疗前有所减少，微觉醒指数、睡眠结构变化差异无统计学意义。

The improvement in molar relationship and overjet is achieved with foreward of A point,upright and distal movement of the lower posterior teeth.

通过A点的前移，下磨牙的直立和远中移动使磨牙关系和前牙覆盖关系明显改善。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。