BioMed, Volume 3, Issue 4 (December 2023) – 6 articles

Mandibular third molars are the most commonly impacted teeth. The prevalence and pattern of impacted mandibular third molars in patients presenting to the Obafemi Awolowo University Teaching Hospitals Complex, a tertiary hospital in south-western Nigeria, are largely unknown. This retrospective study examined 469 patient records, extracting socio-demographic and clinical information for analysis. It also determined the prevalence and pattern of impacted mandibular third molars from January 2015 to December 2019. The positioning of impacted teeth was assessed via periapical radiographs utilizing Winter’s classification. Data were subjected to analysis with IBM SPSS version 20, utilizing frequencies, percentages, and likelihood ratios, with statistical significance set at p < 0.05. The prevalence of impacted mandibular third molars within the study cohort was 2.51%, with a higher incidence observed in the 21–29 age group (p < 0.001). Mesioangular impaction was the most prevalent, with pericoronitis being the primary reason for extraction, and periodontal pockets being the most common associated pathology. Full article

Psychosocial trauma has accompanied mankind since time immemorial and has been sufficiently portrayed in art and literature to suggest that posttraumatic stress disorder may be as old as combat itself. Since war is more frequent in human history than peace, public health measures are confined to mitigating the detrimental impact of battlefield experiences on combat participants. At present, PTSD outcome studies show mixed results, marked by high nonresponse rates, therapy dropout, and completed suicide, suggesting that novel strategies are urgently needed. Those of us who work routinely with combat veterans have noted an increasing trend of patients preferring mindfulness-based therapies as opposed to trauma-centered treatments, such as prolonged exposure or trauma-focused cognitive behavioral therapy. Preference for mindfulness over trauma-based therapies appears to coincide with the shift in research focus from the amygdala and fear to the insular cortex and interoceptive awareness. Therefore, rethinking PTSD as insular pathology is driven by the recent findings that neurons in this cortical area not only regulate cardiac rhythm but also record past intestinal inflammations. These discoveries likely explain the high comorbidity of stress-related disorders with premature endothelial senescence and a dysfunctional intestinal barrier. Moreover, the identification of the cholinergic anti-inflammatory pathway and the revelation that endothelial cells express alpha-7 nicotinic receptors has brought PTSD prevention and early detection within reach. In this narrative review, we discuss the relationship between early vascular aging, gut barrier disruption, and PTSD. We also examine the link between this pathology and faulty interoceptive awareness, surmising that hypertension and decreased heart rate variability are PTSD risk factors, while lipopolysaccharide, lipopolysaccharide binding protein, soluble CD14, microbial cell-free DNA, acyloxyacyl hydrolase, and IL22 comprise early detection markers of this disorder. Full article

Idiopathic pulmonary fibrosis (IPF), hypersensitivity pneumonitis (HP) and systemic sclerosis (SSc) are among the most common entities that cause pulmonary fibrosis. Alveolar collapse with subsequent collapse induration of lung tissue is thought to contribute to the fibrotic transformation. The purpose of this study was to examine lung tissue in computed tomography (CT) of non-diseased appearance during expiration for signs of increased density suggesting collapsibility in fibrosing lung diseases. We further analyzed the diaphragmatic movements during the respiratory cycle to determine relationships between density differences and the apex–diaphragm diameter. Significant differences in attenuation changes between inspiration and expiration of unaffected lung parenchyma were detected between IPF and controls and between HP and controls for all lung lobes (p < 0.001). Only minor differences were found between SSc and controls. There was no clinically relevant difference between patients with IPF and those with HP. The measured absolute apex–diaphragm diameter in inspiration and expiration demonstrated a statistically significant difference between patients with IPF versus normal controls. However, the diaphragmatic excursions were not different between these groups. Compared to controls, CT lung density increases significantly more during expiration in the fibrotic lungs of IPF and HP patients. The observed increase in density might indicate the collapse of alveoli during expiration and may represent a common pathophysiologic feature of fibrosing lung diseases. The density changes and lung extensions do not have the same ratios across different diseases and controls. Full article

The aim of this scoping review was to map the research that links oral health and sustainable development goals (SDGs). The question that guided this review was what is the published evidence specifically linking oral health and SDGs? The search of articles published between 2015 and June 2023 in English was conducted in June 2023 in PubMed, Web of Science, Cumulative Index to Nursing and Allied Health Literature, and Scopus. The extracted data from the 12 of the 520 publications that met the inclusion criteria were synthesized. These were publications from the African (n = 2) and European (n = 1) regions. Ten of the studies were not country specific. There were three observational studies. The referenced SDGs were SDG 1 (n = 1), SDG 3 (n = 11), SDG 4 (n = 3), SDG 5 (n = 2), and SDG 13 (n = 1). The studies linking oral health to SDG3 discussed a range of issues related to integrated oral health care, dental education on the SDGs, improved health equalities, access to universal health care, and sustainable health approaches. The small number of studies identified suggests the need to take proactive steps to generate research-based evidence that explores the interplay between oral diseases, oral health, and SDGs to address the dearth in the literature. By so doing, resources allocated to the SDGs can also be effectively uses to control oral diseases. Full article

This study investigates the impact of more densely populated urban environments proxied by the number of skyscrapers on the obesity prevalence among young vs. old populations at a US statewide level. Obesity is a global pandemic, as well as a major risk factor for a long series of health problems and increased mortality rates. We employ a quadratic model, which relaxes the a priori assumption of the monotonic rise or drop in obesity prevalence with the number of skyscrapers. The outcomes demonstrated a U-shaped curve and a sharper decrease (increase) in the projected obesity prevalence with the number of skyscrapers in the range of 0–147 (147–270) skyscrapers for the old population age cohorts above 65 years old. One possible explanation is the different motivation for physical activity among dissimilar age cohorts. While younger people are focused on maintaining a slim body shape, older people identify with the importance of sports. The public policy outcome of our study is the need to implement different recommendations in dissimilar urban environments based on age cohort stratification. Given that skyscrapers are the manifestation of wealth economics and present the typical characteristics of modern cities, which, in turn, are the future of economic development and productivity, these recommendations might prove to be important. Full article

Untreated early childhood caries (ECC) is a global public health concern. In the short term, untreated ECC can lead to pain, infection, and disrupted sleep, among other issues. In the long term, it is associated with poor oral health in later life, increased risk of caries in permanent teeth, and adverse effects on physical and psychological development. There may be a link between untreated ECC and adverse cognitive and neurodevelopmental outcomes in young children, although the exact pathways are not fully understood. One possible pathway is through the relationship between mastication and brain stimulation. Impaired masticatory function due to ECC can affect the hippocampus, a key region responsible for memory and learning. Furthermore, untreated ECC can cause chronic inflammation, leading to the release of pro-inflammatory cytokines that may damage the brain. Sleep disturbances resulting from ECC-related pain and discomfort can also impact brain development and cognitive functioning. Additionally, frequent use of antibiotics and analgesics to address ECC-related infections can disrupt the gut microbiome, potentially affecting the brain through the gut–brain axis. Untreated ECC can cause nutritional deficiencies and elevated nutritional risk, and can further hinder brain development. Addressing ECC comprehensively with early childhood health initiatives can help mitigate potential long-term consequences and promote optimal brain development in young children. Full article