Clark D C, Chin Quee T, Bergeron M J, Chan E C, Lautar-Lemay C, de Gruchy K
J Periodontol. 1987 Feb;58(2):115-8. doi: 10.1902/jop.1987.58.2.115.
Repeated measurements of attachment level appear to be important assessments in periodontal clinical trials, yet the lack of reliability for this assessment creates measurement error which in turn demands increased sample sizes or reduces the power of the test. A plastic occlusal stent has been developed as a fixed reference point to assess changes in probing depths over time and thus reflect differences in attachment levels. The advantages of this system over traditional methods have not been measured. The purpose of this study was to determine intra- and interexaminer reliability for probing depths from the stent and the CEJ. Paired measurements of attachment level using the stent produced correlation coefficients for inter- and intraexaminer readings of 0.84 and 0.76, respectively. For subgingival cementoenamel (CEJ) measurements, lower coefficients of 0.71 and 0.59 were found for inter- and intraexaminer paired readings, respectively. Thus, measurements using the stent appear to be more reliable than subgingival CEJ readings.
在牙周临床试验中，附着水平的重复测量似乎是重要的评估方法，但该评估缺乏可靠性会产生测量误差，进而需要增加样本量或降低检验效能。一种塑料咬合支架已被开发出来作为固定参考点，以评估随时间变化的探诊深度，从而反映附着水平的差异。该系统相对于传统方法的优势尚未得到衡量。本研究的目的是确定检查者间和检查者内使用该支架和釉牙骨质界（CEJ）进行探诊深度测量的可靠性。使用该支架进行附着水平的配对测量，检查者间和检查者内读数的相关系数分别为0.84和0.76。对于龈下釉牙骨质界（CEJ）测量，检查者间和检查者内配对读数的相关系数分别为较低的0.71和0.59。因此，使用该支架进行的测量似乎比龈下CEJ读数更可靠。
