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Clinical evaluation methods for posterior composite restorations.

A J Goldberg, E Rydinge, E A Santucci

    Journal of Dental Research
    |December 1, 1984
    PubMed
    Summary

    This study compared three methods for evaluating posterior composite restoration wear over two years. A standardized model categorization method proved most sensitive, detecting significant differences early in the study.

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    Area of Science:

    • Dental Materials Science
    • Clinical Research Methodology

    Background:

    • Assessing the in vivo wear of posterior composite restorations is crucial for material longevity.
    • Existing evaluation systems, like the US Public Health Service (USPHS) system, provide a baseline for clinical assessment.

    Purpose of the Study:

    • To compare the sensitivity of two novel in vivo wear evaluation methods against the established USPHS system for posterior composite restorations.
    • To determine the earliest point at which statistically significant differences in wear between composite formulations can be detected.

    Main Methods:

    • Three methods were employed: the USPHS direct clinical evaluation system, total ranking of models, and categorization of models according to a set of standards.
    • Evaluations were conducted over a two-year period, with consistent assessments across all methods and time points.

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    Main Results:

    • All three methods demonstrated consistency over the two-year study period.
    • The methods, in order of increasing sensitivity, were: USPHS, total ranking, and standardized model categorization.
    • Standardized model categorization identified statistically significant differences (p < 0.05) between composite formulations by the nine-month recall.
    • All tested composite formulations exhibited progressive wear over time, albeit at a diminishing rate.

    Conclusions:

    • Standardized categorization of models offers superior sensitivity for detecting in vivo wear differences in posterior composite restorations compared to USPHS and total ranking methods.
    • This enhanced sensitivity allows for earlier identification of material performance variations, aiding in material selection and development.
    • Wear progresses over time but at a decelerating rate for all evaluated composite formulations.