汉族青年上中切牙牙冠外形分类与龈乳头充满的相关性研究  

Relationship between crown form of upper central incisors and papilla filling in Chinese Han-nationality youth

作　　者：杨璇[1,2] 乐迪[1] 张艳玲[1] 梁凌智 杨刚[1] 胡文杰[1] 

机构地区：[1]北京大学口腔医学院·口腔医院,牙周科,口腔数字化医疗技术和材料国家工程实验室,口腔数字医学北京市重点实验室,北京100081 [2]中日友好医院口腔医学中心,北京100029

出　　处：《北京大学学报（医学版）》2016年第5期866-870,共5页Journal of Peking University:Health Sciences

摘　　要：目的：在获取汉族青年上中切牙临床牙冠标准化图片的基础上,对牙冠外形进行更为科学客观的分类,并分析牙冠外形分类与龈乳头充满的关系。方法：纳入180名牙周健康汉族青年（男75人,女105人）,平均年龄（24.3±4.5）岁（20~30岁）,获取上前牙区标准化图片共360幅,请13名修复科医生对牙冠外形分类,对每名医生的分类结果进行汇总,得到牙冠外形客观分类结果（尖圆形、卵圆形、方圆形）,分析不同牙冠外形对龈乳头充满的影响。结果：上中切牙中,尖圆形、卵圆形、方圆形牙冠分别占31.4%（113/360）、37.2%（134/360）、31.4%（113/360）,且牙冠外形分布在不同性别之间差异无统计学意义。一致性分析显示评价者间κ值平均为0.381。采用多人评估取最终分类的方法后,平均κ值上升为0.563。排除24颗无接触的上中切牙后,尖圆形、卵圆形、方圆形牙冠对应的牙龈乳头充满率分别为56.4%（62/110）、69.6%（87/125）、76.2%（77/101）,方圆形牙冠对应的龈乳头更易充满（P=0.007）。结论：获取汉族青年中不同外形上中切牙牙冠的比例,方圆形牙冠更有利于龈乳头充满,需要建立一种更为客观、科学的牙冠外形分类方法。Objective： To explore a crown form classification method for upper central incisor which is more objective and scientific than traditional classification method based on the standardized photography technique. To analyze the relationship between crown form of upper central incisors and papilla filling in periodontally healthy Chinese Han-nationality youth. Methods： In the study,180 periodontally healthy Chinese youth（ 75 males,and 105 females） aged 20- 30（ 24. 3 ± 4. 5） years were included. With the standardized upper central incisor photography technique,pictures of 360 upper central incisors were obtained. Each tooth was classified as triangular,ovoid or square by 13 experienced specialist majors in prothodontics independently and the final classification result was decided by most evaluators in order to ensure objectivity. The standardized digital photo was also used to evaluate the gingival papilla filling situation. The papilla filling result was recorded as present or absent according to naked eye observation.The papilla filling rates of different crown forms were analyzed. Statistical analyses were performed with SPSS 19. 0. Results： The proportions of triangle,ovoid and square forms of upper central incisor in Chinese Han-nationality youth were 31. 4%（ 113 /360）,37. 2%（ 134 /360） and 31. 4%（ 113 /360）,respectively,and no statistical difference was found between the males and females. Average κ value between each two evaluators was 0. 381. Average κ value was raised up to 0. 563 when compared with the final classification result. In the study,24 upper central incisors without contact were excluded,and the papilla filling rates of triangle,ovoid and square crown were 56. 4%（ 62 /110）,69. 6%（ 87 /125）,76. 2%（ 77 /101） separately. The papilla filling rate of square form was higher（ P = 0. 007）. Conclusion： The proportion of clinical crown form of upper central incisor in Chinese Han-nationality youth is obtained. Compared with triangle form,square form is found t

关 键 词：美学 牙科 切牙 牙冠 牙乳头 

分 类 号：R78[医药卫生—口腔医学]