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J Indian Soc Periodontol. 2009 Jan;13(1):12-5. doi: 10.4103/0972-124X.51888.

The location of cemento enamel junction for CAL measurement: A clinical crisis.

Author information

1
Senior Professor, Department of Periodontics, College of Dental Sciences, Davangere, Karnataka, India.

Abstract

BACKGROUND:

We face various problems while measuring the Clinical attachment level (CAL) from Cemento-enamel junction (CEJ). This study aims to record and compare the CEJ location measurements using a xed reference point (FRP) [Custom made stent] before and after ap elevation.

MATERIALS AND METHODS:

A custom made stent and UNC-15 probe were used. Recording of CEJ location was made using a UNC-15 (Hu-Friedy) probe, before (close CEJ) and after (Open CEJ) the reflection of the flap from the lower edge of the stent in those subjects who were indicated for flap surgery, at baseline.

RESULTS:

We used statistical analysis involving intra-group comparison done by Paired-'t' test. The close and the open CEJ measurements demonstrated a, statistically, non-significant difference. The equi-measurements of close and open CEJ numerical data were remarkably lower than the under and overestimation of measurements. Thus, despite certain disadvantages of stent, the FRP provides a simple solution for CAL measurement.

CONCLUSION:

The results of this study confirms the objective of the study and strongly suggests that CAL measurements done without FRP is subjected to great variation and the diagnostic and prognostic interpretation of CAL should be viewed seriously in periodontics.

KEYWORDS:

Clinical attachment level; cemento-enamel junction; close measurements; open measurements; stent

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