title: The location of cemento enamel junction for CAL measurement: A clinical crisis.
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.
  
  
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Senior Professor, Department of Periodontics, College of Dental Sciences, Davangere, Karnataka, India.
authors.forename: K L
authors.initials: KL
authors.lastname: Vandana
authors.forename: Ira
authors.initials: I
authors.lastname: Gupta