Cluster analysis of long-term USPHS-category changes for posterior composites

Objectives . Assess patterns of clinical change observed from USPHS direct evaluation categories for pooled results of 10 clinical trials for Class I and II posterior composite restorations monitored up to 10 years.

Materials and methods . Six categories of USPHS evaluations (color [CL], surface texture [ST], wear [WR], marginal adaptation [MA], marginal staining [MS], caries [CR]) were evaluated (alfa [A, ideal], bravo [B, clinically acceptable], charlie [C, clinically unacceptable] by direct observation using the same 4-person highly calibrated team for 3 year, 5 year, and 10 year recalls. Ten separate studies with different materials, bonding systems, and curing regimens (M = trials for Estilux, NuvaFil, NuvaFil PA, UvioFil, P10, NU76 Exp, Occlusin, FulFil, X55 Exp, H120 Exp, Surefil) spanning about 25 years were pooled ( n = 881 total patients). Patterns were assessed from counts of A-to-B and/or B-to-C changes involving 1, 2, or 3-or-more USPHS categories per patient per recall. For 3-or-more categories (rare), changes were treated as sets of 2-category changes. Groups (within rows, see superscripts) were compared by ANOVA with Bonferonni post hoc tests ( p ≤ 0.05).

Results . Key results for distribution and patterns of changes are bolded below.

Nov 30, 2017 | Posted by in Dental Materials | Comments Off on Cluster analysis of long-term USPHS-category changes for posterior composites
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