上颌第一双尖牙牙冠周径测量及其影响因素  

Measurement of the maxillary first permanent premolar's crown circumference and analysis of factors influencing the crown circle

作　　者：王瑞林[1] 范辉[1] 

机构地区：[1]上海市松江区中心医院口腔科,上海201600

出　　处：《口腔材料器械杂志》2005年第2期67-68,72,共3页Chinese Journal of Dental Materials and Devices

摘　　要：目的探讨上颌第一双尖牙牙冠的周径与其颊舌径、近远中径、对角距离等解剖标志间的关系,为制作和选择带环提供参考依据。方法收集12-25岁患者拔除的100只离体上颌第一双尖牙,利用游标卡尺对上颌第一双尖牙进行测量,分析、观察牙冠周径与颊舌径、近远中径、对角距离的关系,列表总结并作统计学处理。结果上颌第一双尖牙牙冠周径与其颊舌径、近远中径关系最为密切(P<0.01)。结论可通过测量上颌第一双尖牙颊舌径来推算牙冠周径。Objective To understand the relationship of the crown circumference and the dental referential anatomy data of the premolar. The results provided reference data for making and choosing bands. Methods With the digital calipers, a hundred of the maxillary first premolars were measured. The circumference of crowns , buccolingal diameter (P<0.01), mesiodistal diameter were observed and summed up by forms, and then statistically treated. Results The relationship between the maxillary firrst permanent premolar crown circumference and its buccolingnal diameter mesiodistal diameter was the most intimate. Conclusion The maxillary first premolar's crown circumference may be obtained by the measurement of its buccolingnal diameter and mesiodistal diameter.

关 键 词：上颌第一双尖牙 冠周 测量 近远中径 统计学处理 颊舌径 解剖标志 参考依据 游标卡尺 距离 

分 类 号：R783.5[医药卫生—口腔医学]