Does dental students' attendance in classroom lectures depend on the mode of attendance tracking?

Purpose: The necessity to attend classroom lectures is a disputable topic among dental schools globally. Since there is an ongoing debate on different aspects of this problem in literature, the purpose of this study was to compare students’ attitudes toward classroom attendance and investigate if stricter attendance tracking methods could lead to better classroom attendance at two dental schools utilising different modes of tracking students’ attendance. Method: This was an observational, cross-sectional survey distributed among dental students enrolled at King Abdul-Aziz University (KAU) and King Saud University (KSU) in Saudi Arabia. The survey included questions on demographics, average travel time, student's attitudes toward classroom lectures and common reasons for absenteeism. Collected data were analysed and summarised as frequencies and percentages and then compared using the Chi-square test for statistical significance. Findings: The study involved 678 participants from KAU and 475 participants from KSU. In general, there was a significant difference in students’ attendance between both schools in which 26.8% of KAU dental students skipped 5 or more lectures/month compared to 11.5% of students at KSU. Among the factors affecting classroom lecture attendance, commuting time was a major one reported by students (44.8% of students at KSU and 51.4% at KAU needed 30-60 min to reach their schools). The availability of lectures through online resources and the necessity to study for exams were additional factors reported by students of both schools. Implications for research and practices: Based on the current data, the school’s method to track students’ attendance may have a role in the pattern of classroom absenteeism

Perineural invasion is a significant prognostic factor in oral squamous cell carcinoma: a systematic review and meta-analysis

(1) Objectives: This systematic review and meta-analysis aimed to summarize current evidence regarding the prognostic role of perineural invasion (PNI) in patients with oral squamous cell carcinoma (OSCC). (2) Methods: We searched Cochrane Central, ProQuest, PubMed, Scopus, Science Direct, and Web of Science, using relevant keywords to identify eligible articles. Two independent reviewers conducted two-stage screening, data extraction, and quality assessment. The risk of bias was assessed using the Newcastle–Ottawa Scale (NOS) criteria. All analyses were performed using comprehensive meta-analysis (CMA; version 3.3.070) software. (3) Results: The study included 101 published articles encompassing 26,062 patients. The pooled analyses showed that PNI was associated with significantly worse overall survival (OS; HR = 1.45, 95% CI: 1.32–1.58; p < 0.001), worse disease-specific survival (DSS; HR = 1.87, 95% CI: 1.65–2.12; p < 0.001), and worse disease-free survival (DFS; HR = 1.87, 95% CI: 1.65–2.12; p < 0.001). Similarly, both local recurrence-free survival (LRFS) and regional recurrence-free survival (RRFS) were worse in patients with PNI (HR = 2.31, 95% CI: 1.72–3.10, p < 0.001; and HR = 2.04, 95% CI: 1.51–2.74, p < 0.001), respectively. The random-effect estimate of three studies demonstrated that the presence of PNI was associated with worse failure-free survival (FFS; HR = 2.59, 95% CI: 1.12–5.98, p < 0.001). (4) Conclusions: The current evidence suggests that PNI can be used as an independent predictor of the prognosis for patients with OSCC. The presence of PNI was associated with worse OS, DFS, DSS, FFS, and with recurrence. Asian patients and patients with extra-tumoral or peripheral PNI invasion were associated with worse prognosis

Oral Manifestations of COVID-19: A Cross-Sectional Study of Their Prevalence and Association with Disease Severity

Background: COVID-19, caused by SARS-CoV-2, has impacted the world in an unprecedented way since December 2019. SARS-CoV-2 was found in the saliva of patients, and entry points for the virus may have been through the numerous angiotensin-converting enzyme 2 receptors in the oral cavity. Oral manifestations of COVID-19 could contribute to the burden of oral disease. Objective: To determine the prevalence of oral manifestations of COVID-19 in patients and their association with disease severity. Methods: Interviews were conducted with adult participants diagnosed with COVID-19 between October 2021 and March 2022 to document their demographic and health status data, symptoms, and the presence of oral manifestations of COVID-19. Chi-square and the Fisher’s exact test were used to compare data on the presence or absence of oral manifestations of COVID-19. Results: Of 195 participants interviewed, 33% were 18 to 24 years old, 33% were 25 to 34 years old, and 75% were female. A total of 57 (29%) had oral manifestations; the most common were taste disorders (60%), xerostomia (42%), and oral ulcers (11%). There was no relationship between the severity of COVID-19 and the presence of the oral manifestations. Conclusion: Oral manifestations of COVID-19 were common among female patients and linked to certain general COVID-19 symptoms regarding frequency and extent

Systemic Use of Arnica Montana for the Reduction of Postsurgical Sequels following Extraction of Impacted Mandibular 3rd Molars: A Pilot Study

Background. Postsurgical sequels (PSS) are a group of complications commonly encountered following invasive dental surgical procedures such as bone grafting procedures, external sinus grafting, and 3rd molar extractions. These include pain, intraoral and extraoral bruising, and edema. The aim of this study is to evaluate the clinical efficacy of arnica montana (AM) in the management of PSS following extraction of impacted mandibular 3rd molars. The investigators null hypothesis includes no significant role of AM in reducing PSS following dental extraction. Materials and Methods. The investigators implemented a case-control pilot study enrolling twenty-three patients with impacted mandibular 3rd molars. These patients were allocated to AM or control group. Baseline clinical measurements were collected and included: (1) length of the surgical procedure, (2) pain score, (3) maximum mouth opening, and (4) facial measurements to evaluate edema levels. Subjects in active group received systemic AM tablets following the manufacturer instructions. All study subjects were followed up on Days 2, 4, and 7. Data was analyzed for statistical significance. Results. A total of 30 impacted mandibular 3rd molars were extracted, in which 22 completed with AM. There were 16 females, and the average age was 26 years. On Day 2, subjects in the AM group reported significantly lower VAS compared to control group (3.09 ± 2.22 versus 4.75 ± 1.28). In addition, bleeding, extraoral bruising, edema, and decrease in maximum mouth opening were significantly less reported in the AM group. Conclusions. This study describes the potential benefit of AM in reducing PSS following dental extractions