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External validation of periodontal screening using self-reports in dental settings
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Orientador(es)
Resumo(s)
Background/Objectives: This study aimed to externally validate the screening model for severe PD proposed by Verhulst in a Portuguese population, assessing its discriminative performance and clinical applicability.
Methods: A cross-sectional study was conducted with 310 adults recruited from a university dental clinic in Portugal. The participants completed a validated self-reported oral health questionnaire (screening model) and underwent a full-mouth periodontal examination using the CPITN index, with severe PD defined as a score of 4. Model performance was evaluated for discrimination, calibration, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV).
Results: Of the 310 participants, 51% were diagnosed with severe PD. The Verhulst model showed an area under the curve (AUC) of 0.72 (95% CI: 0.67–0.77), with sensitivity and specificity of 0.709 (95% CI: 0.639–0.779) and 0.724 (95% CI: 0.651–0.796) and PPV and NPV of 0.727 (95% CI: 0.673–0.784) and 0.704 (95% CI: 0.651–0.764), respectively. Calibration was reasonable, with an observed-to-expected ratio of 1.10 (95% CI: 0.939–1.291).
Conclusions: The model demonstrated acceptable external validity and could serve as a feasible screening tool for severe PD in Portuguese dental settings. Its integration may enhance early diagnosis and interdisciplinary care. Future studies should consider broader diagnostic criteria to refine accuracy.
Descrição
Palavras-chave
periodontitis screening model self-reported questionnaire prediction model CPITN oral health model validation
Contexto Educativo
Citação
Viana J, Machado V, Lyra P, Proença L, Su N, Mendes JJ, Botelho J. External Validation of Periodontal Screening Using Self-Reports in Dental Settings. Diagnostics. 2025; 15(23):3015. https://doi.org/10.3390/diagnostics15233015
Editora
MDPI