ABSTRACT
Statement of the Problem: Fibro-osseous lesions (FLs), may rarely exhibit malignant features likewise undergo malignant transformation. Awareness of these features can assist in screening for potentially malignant cases and identifying low-grade central osteogenic sarcoma (LGCOS) that may mimic FLs. Purpose: The objective of this study was to determine the usability of an index in predicting malignant changes in jaw FLs. Materials and Method: This was a retrospective study where hematoxylin and eosin (H&E) slides and archival records of fibrous dysplasia (FD) and ossifying fibroma (OF) cases were reviewed. The sections were assessed for permeation of marrow spaces, stromal growth pattern, cytologic atypia, mitotic activity, and pattern of bone growth, which are parameters for diagnosing LGCOS. The predictive histologic index of malignancy (PHIM) was determined by a sum of the scores and graded as 0=nil, 1=low, 2 & 3=moderate, and 4 & 5=high. Data were presented using descriptive analysis. Results: Ninety-three cases of FLs met the inclusion criteria, consisting of 40(43%) cases of FD and 53(57%) cases of OF. The peak age of presentation for FD and OF was 2nd and 3rd decade. There was a female preponderance of 1:1.6. The maxilla was the most common site affected by FD, while the mandible was most commonly affected by OF. For FD cases, the PHIM was moderate in 10(25%) cases and low in 21(52.5%) cases. Similarly, for OF cases, 30(56.6%) cases had low grade PHIM while 10(17%) cases had moderate grade PHIM. Conclusion: The PHIM depicted low to moderate malignancy grade in some of the cases studied. Follow up studies would be necessary to assess the PHIM.
ABSTRACT
Background: Recent evidence has shown that the prevalence of periodontal diseases is still high among adolescents and, thus, there is an impetus to promote good oral hygiene habits among them through schools. There is a need to provide baseline data on the oral hygiene habits of adolescents and how it impacts their oral health-related quality of life for appropriate intervention to be instituted. Moreover, oral health-related quality of life describes how oral health affects the daily activities of individuals; thus, it provides a holistic means of involving individuals in making decisions about their oral health including uptake of oral hygiene habits. Aim: To assess the impact of oral hygiene habits on adolescents' oral health-related quality of life. Methods: A cross-sectional study was conducted among 1,800 adolescents aged 14-18 years attending 36 Senior Secondary Schools in the metropolis of Ibadan, Nigeria. Data were collected using a self-administered questionnaire, which assessed students' sociodemographic characteristics, oral hygiene habits, and oral health-related quality of life with COHIP-SF19. Data obtained was analyzed with SPSS version 25 and the p-value was set at <5%. Results: The mean age of the adolescents was 15.16 (±1.16) years. Many 1,094 (60.3%) cleaned their teeth twice or more often daily with 126 (7.0%) cleaning after meals and 1,519 (84.4%) changing their tooth cleaning agent at three months intervals or less. About 1,215 (67.5%) spent three minutes or longer in cleaning their teeth. Only a few 238 (13.2%) cleaned interdentally and 137 (7.6%) used dental floss. The OHRQoL scores of the adolescents ranged from 9-76. A total of 1,612 (93.5%) had at least an impact on their OHRQoL. Those who cleaned their teeth more frequently (twice or more) were more likely to have better OHRQoL (OR = 1.6, 95% CI = 1.1-2.4, p = 0.025) and those who did not clean interdentally were more likely to have better OHRQoL (OR = 2.8, 95% CI = 1.2-6.5, p = 0.014) than others. Conclusion: The oral hygiene habits of the adolescents were suboptimal and those who cleaned their teeth twice or more often each day had fewer impacts on their OHRQoL, whereas those who engaged in interdental cleaning had higher impacts on their OHRQoL than others.
ABSTRACT
Africa can be "left behind" after other advanced continents recover from the coronavirus disease 2019 (COVID-19) pandemic as reflected by the global pandemic of HIV/AIDS. In this paper, we summarize potentially adaptable, effective and innovative strategies from China, Italy, and the U.S. The purpose is to help African countries with weaker healthcare systems better respond to the COVID-19 pandemic. China, being the first to report COVID-19 infection swiftly swung into anti-epidemic actions by the use of innovative risk communication and epidemic containment strategies. Italy and U.S., the next rapidly hit countries after China, however, experienced sustained infections and deaths due to delayed and ineffective response. Many African countries responded poorly to the COVID-19 pandemic as evidenced by the limited capacity for public health surveillance, poor leadership, low education and socioeconomic status, among others. Experience from China, Italy and U.S. suggests that a better response to the COVID-19 pandemic in Africa needs a strong public health leadership, proactive strategies, innovative risk communication about the pandemic, massive tests and isolation, and scaling-up community engagement. Lastly, African countries must collaborate with other countries to facilitate real-time information and experience exchange with other countries to avoid being left behind.
