正常[牙合]青少年临床牙冠中心点连线种类与托槽定位的研究  

The Midpoints Line of Facial Axis Point and its Relationship with Bracket Positioning:A Study in Teenagers with Normal Occlusion

作　　者：林婷[1] 吴小瑾 杨莉[1] 郑伟龙 吴倩贤 张斌[1] LIN Ting;WU Xiaojin;YANG Li;ZHENG Weilong;WU Qianxian;ZHANG Bin(Department of Orthodontics, Affiliated Stomatology Hospital of Guangzhou Medical University,Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou 510182, China)

机构地区：[1]广州医科大学附属口腔医院正畸科·广州市口腔再生医学基础与应用研究重点实验室,广东广州510182

出　　处：《口腔医学研究》2021年第6期539-542,共4页Journal of Oral Science Research

摘　　要：目的:研究广州地区青少年正常[牙合]人群临床冠中心点连线的分布规律,对直丝弓托槽的垂直向定位进行探讨。方法:制取59例广州市正常[牙合]青少年人群的牙颌模型,使用数显游标卡尺测量临床牙冠高度并确定临床牙冠中心点,对临床牙冠中心点的水平向及垂直性数据通过简易模型二维测量仪进行二维测量,它的结果用计算机软件描绘出来,形成临床牙冠中心点连线,并对连线形态进行分析。结果:广州市青少年正常[牙合]人群的临床牙冠中心点连线是可以归纳成几个有规律的折线。结论:正常[牙合]青少年人群的临床牙冠中心点连线并非都在一条直线上,临床上不应该完全按照临床牙冠中心点的高度进行托槽的粘接定位。Objective:To evaluate the patterns of midpoints lines of facial axis(FA)point and discuss its relationship with pre-adjusted bracket positioning.Methods:Fifty-nine sets of stone models were prepared from teenagers of normal occlusion.The height of clinical crown was measured with a vernier and the midpoints of the FA point were determined.The horizontal and vertical data of the center point of clinical crown were measured by a simple two-dimensional model measuring instrument.The lines of the midpoints of FA which were drawn with computer software were analyzed.Results:The central points of the clinical crowns of adolescents with normal occlusion in Guangzhou could be summarized into several regular zigzag lines.Conclusion:The FA points between the teeth were not always on the same plane.It was recommended that the ideal position to place the bracket was not the center of the labial surface of the tooth.

关 键 词：临床牙冠中心 托槽定位 正常[牙合] 

分 类 号：R78[医药卫生—口腔医学]