目的 探讨Tweed-Merrifield定向力矫治技术对前突高角病例的矫治效果.方法 根据Tweed-Merrifield定向力技术原理对20例前突高角患者进行正畸治疗,并对矫治结果进行观察和分析.结果 无论是生长发育期患者还是成人患者,通过Tweed-Merrifield定向力矫治技术,20例前突高角病例均得到显著的改善.结论 Tweed-Merrifield定向力矫治技术特别适合前突高角病例矫治,其良好效果源于其对垂直方向的有效控制,实现下颌骨的逆时针旋转,从而使前突高角病例的面型得到极大改善.

Objective To explore the effects of Tweed-Merrifield directional force technique on treatment of protruded high angle cases.Methods 20 protruded high angle cases were treated according to the principle of Tweed-Merrifield directional technique.Their outcomes were evaluated.Results All 20 protruded high angle patients,either adults or adolescents,achieved significant profile improvement.Conclusions The Tweed-Merrifield directional force technique could receive very well treatment outcomes in protruded high angle cases.Its effective vertical control can result in counterclockwise rotation of the mandible,therefore greatly improve the profile.

比较个性化舌侧矫治与唇侧直丝弓矫治患者牙齿和骨骼关系的X线头影测量结果,为指导正畸临床选择矫治系统提供可靠的理论依据。方法:根据患者全身情况、错牙合畸形分类、牙列拥挤程度和矫治设计确定入选标准,选择临床上常见的成人错牙合畸形病例共30例。将所选患者随机分为个性化舌侧矫治组和唇侧直丝弓矫治组,每组15例。采用Steiner及Tweed头影测量分析方法进行X线头影测量,对2组患者治疗前及治疗后的头影测量数据进行对比分析,并对比2组患者的矫治疗程,评价2种不同矫治系统的治疗效果和疗程。结果:矫治结束后,2组患者磨牙及尖牙关系均为中性关系,前牙呈浅覆牙合浅覆盖,牙齿排列整齐,尖窝相对并且无余留间隙。Steiner头影测量分析,2组患者各项头影测量值比较差异均无统计学意义(P0.05);Tweed头影测量分析,2组患者各项头影测量值比较差异均无统计学意义(P0.05);2种分析法患者治疗前后差值比较差异亦均无统计学意义(P0.05);2组患者临床矫治疗程比较差异无统计学意义(P0.05)。结论:无论采用个性化舌侧矫治还是唇侧直丝弓矫治均可获得良好的牙齿排列及牙合关系,达到令人满意的临床矫治效果。

Objective To compare the X-ray cephalometric results of teeth and skeleton relationship between individual lingual orthodontic and labial straight wire orthodontics,and to provide reliable theoretical foundation for selecting orthodontic system in clinic. Methods The general conditions of the patients, classification of malocclusion,severity of denture crowding and orthodontic design were used as the selection criteria. Thirty familiar adult patients with malocclusion in clinic were divided into two groups randomly:individual lingual orthodontics group (A group)and labial straight wire orthodontics group (B group),15 cases in each group.X-ray cephalometrics were taken using Steiner and Tweed cephalometrics analysis,the results of analysis were compared between pre-treatment and post-treatment in two groups respectively, and the course of treatment in two groups was compared,too.The difference of treatment effect and course of treatment between two different orthodontic systems was eval

文章介绍了竹浆/毛精纺轻爽花呢织物的生产过程，设计了纺纱、织造的工艺参数，探讨了纺织及后整理关键技术，开发出竹浆/毛精纺轻爽花呢织物，具有良好的抗菌、强力和耐磨性能，质地细腻、手感滑爽、悬垂飘逸、舒适凉爽，特别适用于夏季服用。

The process of producing bamboo pulp/wool worsted light bright tweed was intro-duced.The main parameters in spinning and weaving process were designed.The key techniques in spinning,weaving and finishing process were discussed.The bamboo pulp wool/worsted light bright tweed was developed with good antibacterial property,strength and wear resistance,fine texture, smooth,pendent,comfortable and cool,especially suitable for summer wear.