title: Clinical attachment level measurements with and without the use of a stent by a computerized electronic probe.
abstract: OBJECTIVE
  The aim of the present study was to evaluate whether a stent should be used when assessing attachment level (AL) by an electronic probe (Florida Probe).
  
  
  METHODS
  Twenty patients were recruited and individual stents were obtained to measure relative AL (RAL) with the Florida stent probe. Conventional AL (CAL) measurements were obtained by adding pocket depth and gingival recession recorded by the Florida pocket probe. Duplicate RAL and CAL measurements were taken one hour apart from each other on anterior teeth, at six sites per tooth, by one examiner. Patients were treated and reassessed with both probes after 45 days so that the gain in RAL and CAL could also be compared.
  
  
  RESULTS
  Pearson's correlation test showed that correlation was moderate (r = 0.57) and significant (p < 0.001) for duplicate CAL measurements. As for RAL values, correlation was higher (0.91) and significant (p < 0.001). The difference between RAL and CAL gain after 45 days was 0.04 mm (p = 0.85).
  
  
  CONCLUSIONS
  Since the correlation was higher for duplicate RAL measurements than for CAL measurements, the use of a stent should be considered in clinical trials to ensure better reproducibility of measurement of attachment level gains.
authors.affiliation: State University of Campinas, School of Dentistry of Piracicaba, São Paulo, Brazil. lucianamachion@yahoo.com
authors.forename: Luciana
authors.initials: L
authors.lastname: Machion
authors.forename: Denise Carleto
authors.initials: DC
authors.lastname: Andia
authors.forename: Francisco Humberto
authors.initials: FH
authors.lastname: Nociti Júnior
authors.forename: Marcio Zafalon
authors.initials: MZ
authors.lastname: Casati
authors.forename: Antonio Wilson
authors.initials: AW
authors.lastname: Sallum
authors.forename: Enilson Antonio
authors.initials: EA
authors.lastname: Sallum
mesh_terms: D003762:Dental Instruments; D006801:Humans; D015588:Observer Variation; D017622:Periodontal Attachment Loss / Q000175:diagnosis*; D010514:Periodontal Pocket; D015203:Reproducibility of Results; D015607:Stents