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  • Improvements in methods of periodontal probing: comparison of relative attachement level data selected by outlier reduction protocols from Florida disc probe measurements.

    Author(s)
    Breen, HJ
    Rogers, PA
    Johnson, NW
    Griffith University Author(s)
    Johnson, Newell W.
    Year published
    2002
    Metadata
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    Abstract
    OBJECTIVES: To compare relative attachment level data (RAL) selected by the Option-4 algorithm (O-4), Modified Option-4 algorithm (MO-4), Option-3 method (O-3) and Double Pass method (DP) from a common dataset and to determine the most efficient method in eliminating outliers. MATERIAL AND METHODS: A single clinician recorded full mouth RAL with the Florida Disc Probe on four occasions over 6 months in 16 subjects (mean age 48.1 years) with untreated moderate Chronic Adult Periodontitis (mean Probeable Crevice Depth 2.9 mm). RESULTS: 2312 sites were available for analysis. Within-visit correlation coefficients for the two ...
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    OBJECTIVES: To compare relative attachment level data (RAL) selected by the Option-4 algorithm (O-4), Modified Option-4 algorithm (MO-4), Option-3 method (O-3) and Double Pass method (DP) from a common dataset and to determine the most efficient method in eliminating outliers. MATERIAL AND METHODS: A single clinician recorded full mouth RAL with the Florida Disc Probe on four occasions over 6 months in 16 subjects (mean age 48.1 years) with untreated moderate Chronic Adult Periodontitis (mean Probeable Crevice Depth 2.9 mm). RESULTS: 2312 sites were available for analysis. Within-visit correlation coefficients for the two selected RAL measurements were 0.98 (P < 0.001) for O-4, MO-4 and O-3 and >or= 0.92 (P < 0.001) for DP. The maximum mean differences of within-visit RAL were - 0.05 mm for O-4, - 0.03 mm for MO-4, - 0.03 mm for O-3 and - 0.02 mm for DP. The standard deviations of these differences were <or= 0.44 mm for O-4, <or= 0.47 mm for MO-4, <or= 0.45 for O-3 and <or= 0.96 mm for DP. Repeated Measures Analysis of Variance (RMAV) showed a significant difference in RAL between visits for all methods (P < 0.003). RMAV, investigating predetermined between-method comparisons, showed a significant difference in RAL between visits (P = 0.0002) and a significant interaction between the order of the selected RAL and method (P = 0.0011). Within-visit RAL agreement to within 1.0 mm was achieved at >or= 99.9% sites for O-4, >or= 99.9% sites for MO-4, >or= 99.3% sites for O-3 and >or= 85.6% sites for DP. Remeasurement (in addition to two passes) was required over the study period at 16.6% sites for O-4, 13.2% sites for MO-4 and 13.0% sites for O-3: DP, by definition, required no additional measurements. The mean site-specific variances at all visits were <or= 0.1 mm(2) for O-4, MO-4 and O-3 and <or= 0.44 mm(2) for DP. CONCLUSIONS: The Option-4 algorithm was found to be the most effective outlier reduction protocol currently available, producing the most reproducible data.
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    Journal Title
    Journal of Clinical Periodontology
    Volume
    29
    Issue
    8
    DOI
    https://doi.org/10.1034/j.1600-051X.2002.290803.x
    Subject
    Dentistry
    Publication URI
    http://hdl.handle.net/10072/55028
    Collection
    • Journal articles

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