中国壮族青年与越南京族青年上颌前牙牙冠和牙龈形态测量研究

发布时间：2018-05-07 06:44

本文选题：牙冠形态 + 牙龈形态　；参考：《广西医科大学》2017年硕士论文

【摘要】：目的通过测量中国壮族青年与越南京族青年人群上颌前牙的牙冠和牙龈形态得出的数据,对牙冠形态进行客观分类,确定各种牙冠形态在研究人群中的分布比例,以及对比两个民族之间牙冠和牙龈特征。为壮族和京族青年人群上前牙区牙冠及牙龈形态提供参考依据。方法选取年龄20-25岁的200名中国壮族和越南京族青年自愿者作为研究对象,采用硅橡胶印模材料获取上颌牙列模型,使用数显游标卡尺(精度0.01mm)测量并计算牙冠-牙龈形态相关的指标:牙冠宽长比(CW/CL),牙龈角度(GA),龈外展隙角度(GEA),邻面接触区百分比(PCAP)。根据上述的指标,通过聚类分析方法将牙冠形态分为3种类型:方圆形,卵圆形和尖圆形。测量结果通过SPSS 20.0软件进行统计分析。结果1.测量得出了中国壮族和越南京族青年人上前牙区CW/CL,GA,GEA,PCAP四组牙龈参数的相关数据。2.聚类分析牙冠形态的分类结果如下:中国壮族:方圆形(35%)、卵圆形(44%)、尖圆形(21%);越南京族:方圆形(26%)、卵圆形(50%)、尖圆形(24%)。3.牙冠外形的分布在两个民族之间差异无统计学意义。4.越南京族组3种牙冠形态的GA,GEA,PCAP均值均大于中国壮族组的数据,差别有统计学意义(P0.001)。结论:中国壮族和越南京族在3种牙冠形态的分布比例无明显差异;越南京族人群上前牙的GA,GEA,PCAP在3种牙冠形态大于中国壮族人群的数据。
[Abstract]:Objective by measuring the data of the crown and gingival shape of the maxillary anterior teeth of the Chinese Zhuang youths and the young people of the Jing nationality of Vietnam, the shape of the crown was classified objectively, the distribution ratio of various dental crown forms in the study population was determined, and the crown and gingival features between the two nationalities were compared. Methods the dental crown and gingival shape were provided as reference basis. Methods 200 Chinese Zhuang and Vietnamese young volunteers of 20-25 years old were selected to obtain the maxillary teeth model with silicone rubber impression material, and the number of vernier calipers (precision 0.01mm) was used to measure and calculate the index of crown and gingival shape: the crown width ratio (CW/C L) the gingival angle (GA), the angle of the gingival abduction gap (GEA) and the percentage of adjacent area contact area (PCAP). According to the above indexes, the crown morphology was divided into 3 types: square, oval and round. The results were analyzed by the SPSS 20 software. Results 1. measured the Chinese Zhuang and Vietnam Jing nationality young people. Correlation data of CW/CL, GA, GEA, PCAP four groups of gingival parameters in the anterior teeth area.2. cluster analysis of crown morphology as follows: Chinese Zhuang: square round (35%), oval (44%), and round (21%); Vietnam Jing Nationality: square round (26%), oval (50%), and round (24%).3. crown distribution between two nationalities have no statistical significance.4.. The GA, GEA and PCAP values of the 3 dental crowns in the Nanjing group were all greater than those of the Chinese Zhuang group, and the difference was statistically significant (P0.001). Conclusion: there was no significant difference in the distribution ratio of the 3 kinds of crown forms between the Chinese Zhuang and the Vietnam Jing Nationality, and the GA, GEA and PCAP in the upper teeth of the Vietnamese Beijing population were more than the data of the Chinese Zhuang population.

【学位授予单位】：广西医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R781

【参考文献】