贵阳地区汉族中青年人上前牙牙颈部的色度值的测量相关研究

发布时间：2018-04-13 21:55

本文选题：上前牙 + 牙颈部　；参考：《贵州医科大学》2017年硕士论文

【摘要】：目的:1.从不同牙位、性别、年龄方面探讨贵阳地区汉族中青年人上前牙牙颈部颜色色度值规律;2.探讨贵阳地区汉族中青年人上前牙牙颈部颜色色度值与Vi tapan 3--D mas ter比色片颈部色度值的匹配情况。方法:在贵阳地区,按纳入标准招募汉族青中年志愿者360名,按年龄分为三组(20～29岁组、30～39岁组、40～49岁组),每组各120名,男女比例1:1。用Vita Easyshade Advance 4.0无线电脑比色仪测量每位受试者:右上颌前牙区中切牙、侧切牙、尖牙牙颈部中央。记录牙颈部色度值各要素(L*、a*、b*、C*、h*)值。所得数据均采用SPSS19.0统计软件进行分析。结果:1.牙颈部颜色色度值的阈值:L*值:70.6～99,a*值:-1.7～9,b*值:14.4～50,C*值:14.4～50.2,h*值:78～97.1。2.不同牙位牙颈部的L*、a*、b*、C*、h*值之间差异具有统计学意义(P0.01)。经两两比较,中切牙牙颈部L值最高,尖牙牙颈部L*值最低;尖牙牙颈部a*值最高,中切牙牙颈部a*值最低;侧切牙与尖牙牙颈部b*值均高于中切牙,侧切牙与尖牙b*值差异无统计学意义(P0.05);侧切牙与尖牙牙颈部C*值均高于中切牙,侧切牙与尖牙C*值差异无统计学意义(P0.05);中切牙牙颈部h*值最高,尖牙牙颈部H值最低。3.不同性别之间前牙牙颈部色度值L*值(P=0.36),h*值(P=0.14);男性前牙牙颈部色度值a*、b*、C*值明显高于女性(P0.01)。4.不同年龄段牙颈部的L*、a*、b*、C*、h*值之间差异具有统计学意义(P0.01)。经两两比较,40-49岁组的a*、b*、C*值最高;40-49岁组的L*、h*值最低,20-29岁组和30-39岁组的色度L*、a*值差异不具有显著性。5.上前牙牙颈部色度L*、a*、b*、C*、h*的均值与Vitapan 3D-master相比均有统计学意义(P0.01)。结论:1.贵阳地区汉族中青年人不同牙位、不同性别和不同年龄段的上前牙牙颈部色度值有较大差异。2.Vitapan 3D-master比色片颈部颜色不能满足贵阳地区汉族中青年人上前牙颈部的比色需求。
[Abstract]:Purpose 1.To explore the rule of color value of the neck color of anterior teeth of young and middle-aged Han people in Guiyang area from different tooth position, sex and age.To study the matching of color value of anterior teeth neck with vi tapan 3-D mas ter colorimetry in young and middle-aged Han people in Guiyang area.Methods: 360 young and middle aged Han volunteers were recruited according to the inclusion criteria in Guiyang area. According to their age, 360 volunteers were divided into three groups: 30 ~ 39 years old group, 30 ~ 39 years old group, 40 ~ 49 years old group, 120 in each group, the ratio of male to female was 1: 1.Vita Easyshade Advance 4.0 wireless computer colorimetry was used to measure the central incisor, lateral incisor and central incisor of right maxillary anterior teeth.The color value of the tooth neck was recorded.The data were analyzed by SPSS19.0 software.The result is 1: 1.The threshold value of color chroma value of the neck of teeth is: 70.6, 99a *,: -1.7n, 9nb *,: 14.4n, 50g, C*, 50.2h*, 78.77.1.2.The threshold value of the chrominance value of the neck of teeth is: 70.6, 99.9a *.There was a statistically significant difference in the value of C0. 01 ~ * between the two groups in the neck of different tooth positions (P < 0. 01, P < 0. 01).Compared with each other, the cervical L value of the central incisor is the highest, the L * of the canine is the lowest, the A * of the canine neck is the highest, the central incisor is the lowest, the B * value of the lateral incisor and the canine is higher than that of the central incisor.There was no significant difference in the values of B * between lateral incisors and canines (P 0.05), the values of C * in the neck of lateral incisors and canines were higher than those in central incisors, but there was no significant difference in C * values between lateral incisors and canines (P 0.05), and the value of H * in the neck of central incisors was the highest, and the H value in the neck of canines was the lowest (P 0.05).The color value of anterior tooth neck was 0.36% and P = 0.14% respectively, and the color value of male anterior tooth was significantly higher than that of female (P 0.01) and (4) of male anterior tooth neck color value (P = 0.36) and P = 0.14 (P = 0.14), respectively, while that of male anterior teeth was significantly higher than that of female (P < 0.01).There was a statistically significant difference in the value of C0. 01 ~ * between different age groups in the neck of teeth.There was no significant difference in the chrominance between the age group of 20-29 years old and the group of 30-39 years old. There was no significant difference between the two groups.Compared with Vitapan 3D-master, the average value of colority of anterior teeth was significantly higher than that of Vitapan 3D-master (P 0.01).Conclusion 1.There were significant differences in the color values of the anterior teeth neck among the young and middle-aged Han people in Guiyang area. 2.Vitapan 3D-master colorimetric film could not meet the needs of the upper anterior teeth neck colorimetric requirements of the Han nationality young and middle-aged people in Guiyang area.
【学位授予单位】：贵州医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783

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