上前牙牙周表型与冠根比间的关系分析  

Analysis of the relationship between periodontal phenotype and crown-root ratio in anterior teeth

作　　者：李浩杰 马程辉 黄凌霞 钟佳永 LI Haojie;MA Chenghui;HUANG Lingxia;ZHONG Jiayong(Department of Stomatology,Jiaxing First Hospital,Jiaxing 314000,Zhejiang,China)

机构地区：[1]嘉兴市第一医院口腔科,浙江嘉兴314000

出　　处：《中国现代医生》2025年第11期9-12,共4页China Modern Doctor

基　　金：浙江省嘉兴市科技计划项目(2023AD31058)。

摘　　要：目的 分析健康人群不同牙周表型受试者上前牙冠根比的特点。方法 选取100名牙周健康的青年志愿者,女53名,男47名,共计纳入594颗上前牙。运用牙周探针法判断不同牙位的牙周表型,中切牙厚龈型108颗,薄龈型90颗;侧切牙厚龈型95颗,薄龈型103颗,尖牙厚龈型98颗,薄龈型100颗。拍摄全景片,计算上前牙牙冠与牙根长度与冠根比,分析两组差异。结果 中切牙与侧切牙薄龈型上前牙冠根比大于厚龈型,牙根长度小于厚龈型,差异有统计学意义(P<0.05)。上前牙角化龈宽度薄龈型者小于厚龈型,差异有统计学意义(P <0.05)。结论 在上前牙区域,相比较于厚龈型,薄龈型中切牙与侧切牙的冠根比更高,其角化龈宽度也较窄。因此在进行前牙区修复体的设计及正畸治疗前牙移动时,应对考虑潜在风险。Objective To analyze the characteristics of the crown-root ratios of the anterior teeth in subjects with different periodontal phenotypes in healthy population.Methods A total of 100 periodontally healthy young volunteers were selected,there were 53 females and 47 males,totaling 594 anterior teeth were included in the study.The periodontal probe method was used to determine the periodontal phenotypes of different tooth positions,with 108 cases of thick gingival type and 90 cases of thin gingival type in mesial incisors;95 teeth of thick gingival type and 103 teeth of thin gingival type in lateral incisors,and 98 teeth of thick gingival type and 100 teeth of thin gingival type in cuspids.Panoramic radiographs were taken,crown length and root length of upper anterior teeth were calculated,and crown-root ratio was calculated,to compare and analyze the differences between the results of the two groups.Results The crown-to-root ratio in thin gingival group of mesial incisors and lateral incisors were higher than those in thick gingival group,and the root length was smaller than thick gingival group.The difference was statistically significant(P<0.05).The keratinized gingival width of thin gingival group was less than that of thick gingival group,and the difference was statistically significant(P<0.05).Conclusion The relatively high crown-to-root ratio of mesial incisors and lateral incisors in patients with thin gingival phenotypes and the lesser width of keratinized gingiva in thin gingival phenotypes than thick gingival phenotypes.and risk assessment should be taken into account in the restorative system as well as in the orthodontic design of the anterior tooth movement.

关 键 词：牙周表型 上前牙 冠根比 角化龈宽度 

分 类 号：R394[医药卫生—医学遗传学]