电子牙周探针与普通牙周探针对牙周炎基础治疗前检查的一致性研究

目的:评估电子压力敏感牙周探针(简称电子牙周探针)和普通牙周探针对基础治疗前慢性牙周炎探诊深度检查的一致性和可重复性?方法:在基础治疗前,对12例慢性牙周炎患者随机抽取2颗无明显龈上牙石患牙,共计144个牙周探诊位点,由两位测量者分别使用电子牙周探针和普通牙周探针进行牙周探诊深度(PD)测量各2次,用组内相关系数(intraclass correlation coefficient,ICC)来比较测量者本身以及检测结果之间的一致性;以配对t检验比较不同测量者使用同种牙周探针测量PD值的可重复性;以线性回归模型分析造成两种牙周探针测量结果差别的因素?结果:同一测量者?同一方法以及两种方法的组内相关系数(ICC)均大于0.8,说明一致性较好?配对t检验结果表明无论电子牙周探针还是普通牙周探针在不同测量者之间测得的PD结果无显著性差异(P > 0.05),说明两种探针的可重复性均好?线性回归模型结果显示,在考虑了测量者(t=0.26,P=0.793)?测量时间(t=-0.17,P=0.866)后,测量结果间的差别主要是由于牙周袋的深浅(t=72.42,P<0.001)引起的,与测量工具(t=-0.44,P=0.662)无关,说明电子牙周探针和普通牙周探针的测量结果高度一致(线性相关系数r=0.88,P < 0.001)?结论: 在测量者经过正规培训后,被测牙无明显龈上牙石情况下,电子牙周探针和普通牙周探针均适用于慢性牙周炎基础治疗前探诊深度的测量?

Study of agreement between electronic periodontal probe and manual probe for probing depth assessing untreated chronic periodontitis

Objective: To study the agreement and reproducibility of probing depth(PD) measurements between the electronic computerized periodontal probe for constant pressure and the conventional manual periodontal probe before mechanical treatment in patients with chronic peridodontitis. Methods:PD values of total 144 periodontal sites from 12 patients with chronic periodontitis were duplicately measured using electronic periodontal probe and conventional manual probe before instrumental therapy by two examiners at two visits for the 1st day and the 7th day, respectively, Analysis of the agreement by intraclass correlation coefficient (ICC) and reproducibility between the two different periodontal probes on PD measurement was performed by paired t-test. Different examiners,different visits time, different periodontal pocket depth, different probes(methods) were taken into consideration as possible factors leading to the difference. Results:The agreement and reproduciblity of PD values from two different probes were good (P > 0.05)both between two examiners and two visits. In addition, by linear regression model the difference of PD values between two tools is contributed to the periodontal pocket depth(t=72.42,P<0.001) other than examiners(t=0.26,P=0.793),visits(t=-0.17,P=0.866)or periodontal probes(t=-0.44,P=0.662). Conclusion: Electronic periodontal probe and manual periodontal probe, which are used by examiners trained normally and strictly, are both reliable tools for pretreatment measuring PD values in chronic peridodontitis.