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Clear Aligner Treatment : iROK System, the leading edge Clear Aligner Treatment system with the best clinical efficacy.

无托槽隐形矫治器：iROK隐形正畸系统，最先进的无托槽隐形正畸技术，最佳的临床疗效。

In the center of innovations are the iROK System, the most advanced Clear Aligner Treatment device with the best clinical efficacy; and OrthoRx digital orthodontic diagnostic and planning software.

正畸领域正面临着前所未有的创新机会。iROK隐形正畸系统是目前世界上最先进的无托槽隐形正畸（CAT，Clear Aligner Treament）体系，具有最好的临床疗效果。

BACKGROUND: With development of the digitization in cephalometry and model, increasing mathematical methods are applied in studies of orthodontics.

摘要背景：随着口腔正畸学成像、模型观测等检查手段数字化程度的提高，越来越多的学者将数学方法应用于正畸学的研究中。

Cases of the abnormal sex differentiated diseases in children were presented. Among them, there were 4 cases of Turner's syndrome, 1 Klinefelter's syndrome, 9 female pseudohermaphroditism, 2 male pseudohermaphroditism, and 4 true hermaphroditism.

本文报道小儿性分化异常疾病20例(包括先天性卵巢发育不全综合征4例、先天性睾丸发育不全综合征1例、女性假两性畸型9例、男性假两性畸型2例、真两性畸型4例)，对上述病例进行了细胞染色体核型分析，同时作了口腔上皮细胞性染色质、中性粒细胞核鼓植体及尿17酮类固醇、17羟类固醇的检查。

In clinic, lingual and labial orthodontics have many differences, especially the torque control of the upper incisor.

临床上，舌侧正畸和唇侧正畸相比，力学机制有很多不同；上切牙的转矩控制更是舌侧正畸中的难点。

This article analyzes the current situation of aesthetics education in orthodontics in China.

从分析我国口腔正畸学的美学教育现状入手，结合美学教育的功能，阐述了美学教育在口腔正畸学教育领域的必要性、意义以及开展口腔正畸学美学教育的方法。

objective: to evaluate the clinical application of helical ct for the location or treatment of maxilla embedded tooth in the dental orthopaedics.method: 18 cases with embedded tooth of maxilla were made with clinical examination, dentomaxillary pantomography, submaxilla lateral projection and helical ct.the operation be done for supernumerary tooth,distorted teeth,inverted tooth.three embedded tooth of non-inverted tooth were done by orthopaedics.result: among the 18 embedded tooth ,there were 11 palatally and 6 labially presented teeth,1 the 18 patients is mediately with completely inverted supernumerary tooth.all preoperative assessment are one and all in operative or orthopaedics and primary wound healing.

四川大学华西口腔医学院正畸科，四川成都 610041摘要：目的：正畸治疗中对上颌埋伏牙如何定性，定位，并要对此是采取手术拔除［1］或者是正畸治疗进行探讨。方法：对18例（其中1例为2颗多生牙，1颗多生牙已长出，另一颗为完全倒置的多生牙），上颌前部埋伏牙采用临床检查以及拍摄全景片、头侧位片螺旋ct轴位和表面成像等检查［2～4］对埋伏的多生牙、畸形牙和倒置牙共15例采用了相应的手术进路拔除，对形态正常且不倒置的3颗埋伏牙采用了正畸治疗。

Among 1522 cases of leprosy under MDT the disability rate is 57.9%,in Hu- nan Province,of which 63.3% was in Grade Ⅰ and 36.7% in Grade Ⅱ and Ⅲ,including clawhand in 39.9%,plantar ulcer in 28.5%,lagophthalmos in 13.6% and facial paralysis in 3.7%,and the visible disability took mainly place before using WHO's MDT,but there also were new disability after MDT among those who had some disability.

调查1522例用 MDT 的麻风患者中的畸残，发现畸残率为57.9%，其中Ⅰ级63.3%，Ⅱ～Ⅲ级36。%。Ⅱ～Ⅲ级畸残者在手、脚、眼及面部以爪形指、足底溃疡、兔眼和面瘫的发生率最高分别占39.6%、28.5%、13.6和3.7%。Ⅱ～Ⅲ级畸残主要发生在 MDT 前，他们在用 MDT 后发生新畸残的也较多。

The coil spring were kept constant and recorded for 0hr, 1 hr, 2 hrs, 4 hrs, 8 hrs, 12hrs, ldays, 3days or 7days. Upon completion of experiments, the maxillae were removed. The specimens were fixed in 4% paraformaldehyde in 0.1 M phosphate buffer for 24 hrs and decalcified in 10% ethylene diamine tetraacetic acid at room temperature for 5 wks.

本研究通过建立正畸大鼠牙齿移动动物模型和体外细胞培养，结合细胞力学试验方法和分子生物学测试技术，拟从组织、细胞水平以及分子生物学角度探讨ATF4在正畸牙齿移动过程中对牙周组织改建的影响及作用机制，进一步为正畸牙齿移动提供理论和实践依据。

Objective To evaluate the ovarian teratomas that misdiagnosis or missed diagnosis by sonography and discuss the ultrasound characteristics in the rare ovarian teratomas and reasons for misdiagnosis.

目的 分析超声误诊或漏诊的卵巢畸胎瘤，探讨少见组织类型畸胎瘤的超声表现及复杂盆腔条件下畸胎瘤的误诊、漏诊原因。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。