IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) e-ISSN: 2279-0853, p-ISSN: 2279-0861.Volume 20, Issue 4 Ser.13 (April. 2021), PP 20-28 www.iosrjournals.org DOI: 10.9790/0853-2004132028 www.iosrjournal.org 20 | Page Self-Reported Periodontal status and clinical parameters. Is there an agreement? 1 Sorunke ME, 1 Oyapero A, 1 Onigbinde OO, 1 Olagundoye O, 2 Olaitan AO 1 Department of Preventive Dentistry, Lagos State University College of Medicine, Lagos State University, Nigeria 2 Department of Oral & Maxillofacial Surgery, Lagos State University College of Medicine, Lagos State University, Nigeria Abstract Background: Periodontal diseases are a group of highly prevalent infectious, inflammatory conditions of the supporting structures of the teeth. It affects more than 50% of the world’s adult population. This necessitated the need for an alternative procedure to clinical assessment for collection of data to monitor periodontal diseases in populations. The aim of this study is to evaluate the accuracy of the self-report tool vis-avis clinical periodontal status in a population in Lagos, Nigeria. Materials and Methods: A cross-sectional comparative study was carried out among 356 consecutive adult patients using the CDC-AAP Self‑ report surveillance questionnaire and the Community Periodontal Index (CPI). Student’s t-test was used for association between categorical variables. Specificity, sensitivity, positive and negative predictive values as well as diagnostic accuracy were determined for the self-report questionnaire. A value of the sum of sensitivity and specificity less than 120 indicated poor validity. P-value < 0.05 is considered to be statistically significant. Results: According to CPI scores, almost three-quarters (264, 74.2%) of the participants had gingivitis, while an equal proportion of 12.9% (46) had healthy periodontium and periodontitis. Clinically diagnosed periodontal condition demonstrated strong significant relationship with age(p=0.000), OH status(p=0.000) and gingival inflammation as depicted by BI and GI(p=0.000) The prevalence of clinically diagnosed periodontal disease of 87.1% was much higher than that of self-report-questions which ranged from 2.2% (Q5) to 59.3% (Q2). Sensitivity and specificity ranged between 2.58% (Q5) – 57.42% (Q2) and 28.26% (Q2)-100%(Q5) respectively. The question for bleeding gum and Q2 recorded equal accuracy (53.66%) which was the highest while Q5 showed the lowest (15.15%). The diagnostic power decreased as the cut ‑ off was increased. Area under curve (AUC) was calculated to be 0.400. Conclusion: The self-report questionnaire performed poorly in identifying periodontal disease in our study group. The clinically diagnosed periodontal disease prevalence differ widely from that of self-report. Key words: Gingivitis, Periodontitis, Periodontal disease, Self-reported; Questionnaire. --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 14-04-2021 Date of Acceptance: 28-04-2021 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction Periodontal diseases are a group of highly prevalent infectious, inflammatory conditions of the supporting structures of the teeth. Over 50% of the world’s adult population and 87% to 94.4% of Nigerian adult are affected by this condition. 1,2 The early stage of periodontal disease, gingivitis is completely reversible, but may if left untreated progress to a severe form, periodontitis which often results in tooth loss. The resultant disabilities of masticatory and speech dysfunction, poor nutritional status and reduced quality of life; in addition to the report that periodontal disease influence the risk for some life threatening systemic conditions (diabetes, cardiovascular diseases, adverse pregnancy outcomes) makes it a major global public health concern. 3,4,5 For adequate planning, implementation, and evaluation of preventive and control programs, population-based surveillance of periodontal diseases is crucial. [6] The gold standard for detection of early signs of periodontal disease is clinical periodontal examination. [7] Periodontal clinical examination is expensive, time consuming and requires specially trained personnel [8,9] . The discomfort imposed on patients during probing results in higher rate of refusal to be examined. There is need therefore for an alternative procedure for collection of data to monitor periodontal diseases in populations. An alternative is the use of self-reported periodontal measures for periodontal disease. Self-report method is widely employed and accepted in assessing and monitoring the prevalence of various medical conditions in populations.