摘要
背景:牙龈厚度是判定牙龈表型的重要指标,正确评估牙龈表型有助于牙周手术、种植体植入术、正畸治疗的顺利开展,寻找一种舒适、精准、方便的牙龈厚度测量方法一直是该领域的研究热点。目的:研究锥形束CT(cone-beam computed tomography,CBCT)影像法与口内扫描叠加锥形束CT资料(digital intraoral scanners and cone-beam computed tomography,DIS-CBCT)数字化法测量牙龈厚度、判定牙龈厚薄的一致性。方法:招募上颌牙列完整志愿者20名,男性10名,女性10名。分别采用CBCT影像法与DIS-CBCT叠加法测量共计160个牙位颊侧龈缘下2 mm牙龈厚度并判定牙龈厚薄。运用配对t检验分析两种方法测量牙龈厚度的差异,Pearson相关分析评价两种方法的相关性,组内相关系数(Intraclass correlation coefficient,ICC)和Bland-AItman图分析两种方法测量牙龈厚度的可重复性和一致性,Kappa值分析两种方法判定牙龈厚薄的一致性。结果与结论:①CBCT影像法和DIS-CBCT叠加法测得的牙龈厚度分别为(1.47±0.39)mm,(1.42±0.36)mm(t=5.673,P<0.05);②Pearson相关分析显示,两种方法测量的牙龈厚度结果呈正相关(r=0.968,P<0.001);③CBCT影像法测量者内部ICC值为0.982,0.980,测量者之间为0.984;DIS-CBCT叠加法测量者内部ICC值为0.984,0.941,测量者之间为0.964,P<0.001;④两种方法测量牙龈厚度结果组间ICC值为0.967,P<0.001;Bland-AItman分析显示两种方法测量牙龈厚度有4.37%(7/160)的点位于95%一致性界限范围以外;⑤CBCT影像法测量值判定厚、薄龈的牙位数分别为71,89例,DIS-CBCT叠加法测量值判定厚、薄龈的牙位数分别为59,101例;两种方法判定牙龈厚薄组间Kappa值为0.845,P<0.001;⑥结果表明,CBCT影像法和DIS-CBCT叠加法用于龈缘下2 mm牙龈厚度测量存在差异,但相关性极强,测量牙龈厚度的可重复性、一致性均较高,用于判定牙龈厚薄时一致性较好。
BACKGROUND:Gingival thickness is an important indicator to determine gingival phenotype.The correct evaluation of gingival phenotype is helpful for the smooth going of periodontal surgery,implant implantation and orthodontic treatment.The search for a comfortable,accurate and convenient method of measuring gingival thickness has always been a research hotspot in this field.OBJECTIVE:To analyze the gingival thickness in different dental positions and to study the consistency of cone-beam computed tomography(CBCT)image and digital intraoral scanners and cone-beam computed tomography(DIS-CBCT)superimposition image for measuring gingival thickness and determining whether the gingiva is thick or thin.METHODS:Twenty volunteers(10 males and 10 females)with complete maxillary dentition were recruited.The thickness of the gingiva 2 mm below the buccal gingival margin of 160 teeth was measured by CBCT image and DIS-CBCT digital superimposition image.Gingival thickness was used to determine whether the gingiva was thick or thin.Paired t-test was used to analyze the differences in gingival thickness measured by the two methods.Pearson correlation analysis was used to evaluate the correlation between the gingival thickness results of the two methods.The intraclass correlation coefficient(ICC)and Bland-AItman chart were used to analyze the repeatability and consistency in measuring gingival thickness using the two methods.Kappa value was used to analyze the consistency in determining whether the gingiva was thick or thin using the two methods.RESULTS AND CONCLUSION:The gingival thickness measured by CBCT image and DIS-CBCT digital superimposition image was(1.47±0.39)and(1.42±0.36)mm,respectively(t=5.673,P<0.05).Pearson correlation analysis showed that the gingival thickness measured by the two methods was positively correlated(r=0.968,P<0.001).In the CBCT group,the values of intraobserver and interobserver ICC were 0.980-0.982 and 0.984,respectively;in the DIS-CBCT group,the values of intraobserver and interobserver ICC were 0.941-0.984 and 0.964,respectively(P<0.001).The intergroup ICC value of gingival thickness measured by the two methods was 0.967(P<0.001).Bland-AItman analysis showed that 4.37%(7/160)of the points measured by both methods for gingival thickness was outside the 95%limits of agreement.There were 71 cases of thick-gingiva and 89 cases of thin-gingiva measured by CBCT imaging,and 59 cases of thick-gingiva and 101 cases of thin-gingiva measured by DIS-CBCT digital superimposition image.The Kappa value of the two groups was 0.845(P<0.001).These findings indicate that there is a significant difference in the thickness measurement of the gingiva 2 mm below the gingival margin between the CBCT group and the DIS-CBCT group,but the correlation is very strong.The repeatability and consistency of gingival thickness measurement are both high,and there is a good consistency between the two methods when used to determine whether the gingiva is thick or thin.
作者
宋艺蔚
林祥祥
张佳男
陈珏
卢海平
Song Yiwei;Lin Xiangxiang;Zhang Jianan;Chen Jue;Lu Haiping(Faculty of Orthodontics,School of Stomatology,Zhejiang Chinese Medical University,Hangzhou 310053,Zhejiang Province,China;Center of Orthodontics,Department of Dentistry,Zhejiang University School of Medicine,Hangzhou 310000,Zhejiang Province,China;Hangzhou Stomatological Hospital,Hangzhou 310000,Zhejiang Province,China)
出处
《中国组织工程研究》
CAS
北大核心
2024年第4期569-573,共5页
Chinese Journal of Tissue Engineering Research
基金
浙江省医药卫生科技项目(2023KY122),项目负责人:张佳男
中国牙病防治基金会科研项目(A2021-088),项目负责人:张佳男。
