Journal
JOURNAL OF CLINICAL PERIODONTOLOGY
Volume 45, Issue 1, Pages 46-55Publisher
WILEY
DOI: 10.1111/jcpe.12810
Keywords
periodontal disease; periodontal maintenance; periodontal prognosis; prediction model; tooth loss
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AimsTo develop a prediction model for tooth loss due to periodontal disease (TLPD) in patients following periodontal maintenance (PM), and assess its performance using a multicentre approach. Material and methodsA multilevel analysis of eleven predictors of TLPD in 500 patients following PM was carried out to calculate the probability of TLPD. This algorithm was applied to three different TLPD samples (369 teeth) gathered retrospectively by nine periodontist, associating several intervals of probability with the corresponding survival time, based on significant differences in the mean survival time. The reproducibility of these associations was assessed in each sample (One-way ANOVA and pairwise comparison with Bonferroni corrections). ResultsThe model presented high specificity and moderate sensitivity, with optimal calibration and discrimination measurements. Seven intervals of probability were associated with seven survival time and these associations contained close to 80% of the cases: the probability predicted the survival time at this percentage. The model performed well in the three samples, as the mean survival time of each association were significantly different within each sample, while no significant differences between the samples were found in pairwise comparisons of means. ConclusionsThis model might be useful for predicting survival time in different TLPD samples.
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