Prosthetic rehabilitation of edentulous mandible with two-implant retained fixed hybrid prosthesis: A case report

Removable complete dentures have been the most costeffective treatment option for edentulous jaws since decades. However, certain problems are encountered by the patients such as stability of the lower dentures resulting in poor masticatory efficiency. Ridge resorption and inadequate bony support are the long-term complications comprising the stability of the denture and patient finding it difficult to control denture movement during speaking and eating reducing patient compliance. Mandibular implant retained over dentures or hybrid dentures have shown to be better alternatives in terms of retention, stability and patient satisfaction. Two implants provide cost-effective, stabilized and comfortable treatment options. The present case report discusses the management of the patient with compromised dentition in which all teeth were extracted followed by conventional upper complete denture and lower two implant supported fixed hybrid dentures with splinted bar attachmen

Corporate Governance And Performance Of Peer Firms: A Cross-Lagged Analysis Of An Emerging Economy

In this study, we examine the effects of corporate governance practices on financial performance of Pakistani listed firms. On the bases of agency theory, MM theorem, and theory of firm, we suggest that corporate governance effects firm performance directly as well as indirectly via mediation of capital structure and dividend policy. The model was tested using a cross-lagged analysis of 100 non-financial firms with the structural equation modeling (SEM). The study concludes that corporate governance improves financial performance by exploiting capital structure and dividend policy. The findings of this study, highlights the importance of corporate governance practices for peer firms to restructure their debt and dividend policies for the enhancement of their financial performance.

Predictors of Non-adherence to iron chelation therapy in pediatric thalassemia patients

Objective: This study was conducted to identify predictors of non-adherence to iron chelation therapy among children suffering from β-thalassemia major across different treatment regimens. Materials and Methods: It was a cross-sectional study carried out from 1st January 2019 to 30th June 2019. The study was conducted at the Pakistan Institute of Thalassemia, Islamabad. Children between the ages of 2 -16 years suffering from β-Thalassemia major and taking iron chelation therapy were included in the study. Chelation adherence for this analysis was defined as the percent of doses taken in the last 12 weeks out of those prescribed. Guardians of patients were interviewed using a questionnaire and medical records were checked. Data were analysed using SPSS 20.0. Multivariate analysis was conducted to identify the predictors for non-adherence to chelation therapy. The significant value was set at ≤ 0.05. Results: Mean age of the patients in our study was 8.90± 3.74 years. There were 33 males and 64 females. Most of the patients n=87 (89.7%) were taking oral iron chelation therapy. The mean score for chelation adherence was 67.12%. Among the multiple demographic, medical-related, and patient-related factors analysed, travel time from the patient’s residence to the treatment centre and the number of transfusions per year were found to be significant predictors (p-value ≤0.05) of non-adherence to iron chelation therapy. Conclusion: Overall, the study provides strong evidence that healthcare-related factors play a major role in patients’ adherence to treatment. A systemic approach should be taken to ensure patient adherence during the management of paediatric thalassemic patients

Bending fatigue and creep of tough matrix laminates

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1994.Includes bibliographical references (leaves 151-153).by Rizwan Mahmood Gul.M.S

PREVALENCE OF STRESS AND ITS CAUSES AMONG MEDICAL STUDENTS

Objective: Determining the prevalence of stress among medical students and determining the relationship between anxiety, Academic year, Grades, Physical issues and consistency. Methodology: 500 medical students were enrolled in this study from July 2017 to June 2018. They were attending 1st,2nd ,3rd ,4th and the final years of medical studies. They were requested to finish stress inventory. Setting and type: It is a cross sectional type of study done in the University of Lahore, college of medicine. Results: In the wake of getting 80% response rate, up to 400 responses from the students were recorded. 60% subjects were found with a wide range of stress while serious stress was seen in 23% of the cases. A critical relationship was found between study years and levels of stress. The relationship between levels of stress and academic performance and grades was not found factually considerable as dissemination of stress prevalence was not impressively disparate over each of 04 academic grades. Fundamental reason of stress was their studies (63.30%). In 3.6% cases the reason was personal issues or domestic environment. Of the patients enrolled 38.9% of cases didn’t show any other main reason of stress. Conclusion: During first three preliminary years of medical studies, severe mental stress was seen in students. It might be the reason for challenge to students, failure of support service delivery to alleviate mental issue and provide them with common health ways to cope with such issues

Most effective method for the management of physiologic gingival hyperpigmentation: A systematic review and meta-analysis

MATERIALS AND METHODS: A systematic review and meta-analysis were done (1919 to October 2018) using PubMed, CINHAL, Dental and Oral Science, and manual searches. Twenty-five articles were finally reviewed. Only human clinical trials were considered with physiological gingival pigmentation treated with different depigmentation methods and compared with surgical stripping. The outcome was the achievement of gingival depigmentation and its recurrence. RevMan software was used for data analysis. RESULTS: Of 26,132 articles, 25 met the inclusion criteria. Seventeen were randomized control trials and 8 were nonrandomized control trials. Most of the studies were on laser. The control group was scalpel surgery. Majority of studies showed no difference in compared treatment modality. A meta-analysis compared laser ablation with surgical stripping revealed a nonsignificance difference regarding recurrence (P = 0.75) and depigmentation (P = 0.23) and a statistically significant difference regarding postoperative pain favoring laser ablation (P ≤ 0.05). CONCLUSIONS: Surgical stripping has been the conventional treatment of choice, but our review showed that new techniques are equally effective or even better. Laser especially diode laser was the most frequently used technique and showed better esthetic outcomes, less pain, faster healing, and patients\u27 preference and satisfaction after treatment. However, laser showed more regimentation at 6-month evaluation. More good quality randomized controlled trials with different depigmentation methods are needed to draw strong conclusions

A Comprehensive study on (α,β)-multi-granulation bipolar fuzzy rough sets under bipolar fuzzy preference relation

The rough set (RS) and multi-granulation RS (MGRS) theories have been successfully extended to accommodate preference analysis by substituting the equivalence relation (ER) with the dominance relation (DR). On the other hand, the bipolar fuzzy sets (BFSs) are effective tools for handling bipolarity and fuzziness of the data. In this study, with the description of the background of risk decision-making problems in reality, we present $(\alpha, \beta)$-optimistic multi-granulation bipolar fuzzified preference rough sets ($(\alpha, \beta)^o$-MG-BFPRSs) and $(\alpha, \beta)$-pessimistic multi-granulation bipolar fuzzified preference rough sets ($(\alpha, \beta)^p$-MG-BFPRSs) using bipolar fuzzy preference relation (BFPR). Subsequently, the relevant properties and results of both $(\alpha, \beta)^o$-MG-BFPRSs and $(\alpha, \beta)^p$-MG-BFPRSs are investigated in detail. At the same time, a relationship among the $(\alpha, \beta)$-BFPRSs, $(\alpha, \beta)^o$-MG-BFPRSs and $(\alpha, \beta)^p$-MG-BFPRSs is given

Investigating the microstructural and mechanical properties of novel ternary reinforced AA7075 hybrid metal matrix composite

This study investigates the comparison of the microstructural and mechanical properties of a novel ternary reinforced AA7075 hybrid metal matrix composite. Four samples, including AA7075 (base alloy), AA7075-5wt % SiC (MMC), AA7075-5wt %SiC-3wt % RHA (s-HMMC), and AA7075-5wt % SiC-3wt % RHA-1wt % CES (n-HMMC) were developed using the stir casting liquid metallurgy route, followed by the heat treatment. The experimental densities corresponded with the theoretical values, confirming the successful fabrication of the samples. A minimum density of 2714 kg/m3 was recorded for the n-HMMC. In addition, the highest porosity of 3.11 % was found for n-HMMC. Furthermore, an increase of 24.4% in ultimate tensile strength and 32.8 % in hardness of the n-HMMC was recorded compared to the base alloy. However, its ductility and impact strength was compromised with the lower values of 5.98 % and 1.5 J, respectively. This was confirmed by microstructural analysis, which reveals that n-HMMC has mixing issues and forms agglomerates in the matrix, which served as the potential sites of stress concentration leading to low impact strength and ductility. Nevertheless, the hybrid composites showed superior mechanical properties over the MMC and its base alloy

Association of Socio-Demographic and Clinicopathological Risk Factors with Oral Cancers: A 19-Year Retrospective Study

Objective: To determine the association of socio-demographic and clinic-pathological risk factors with oral cancer in Kelantan, Malaysia. Material and Methods: A 19-year cross-sectional survey was performed in Hospital Universiti Sains Malaysia (HUSM), Malaysia. Medical record of 301 oral cancer patients was retrieved from the Medical Records office. Results: The majority of the oral cancer cases were male (62.8%), non-smokers (57.5%), non-alcohol consumers (83.4%), non-betel quid chewers (96.7%), and belonged to Malay ethnicity (68.8%). At the time of diagnosis, most of the patients were at stage II (38.9%). Approximately one-third (30.6%) of the total OC patients experienced loco-regional/distant metastasis, whereas no metastasis was detected in around two-thirds of cases (69.4%). A combination of surgery and radiotherapy was the most commonly employed treatment modality (27.2%). At the time of this study, the survival status of most of the patients was alive (69.1%). The most frequently encountered oral cancer in the Kelantanese population was oral squamous cell carcinoma (70.1%), with the tongue being the most frequently involved oral cavity site (35.5%). Conclusion: More than three-fourths of the cases were alive at follow-up, which included the cases that did not undergo any form of treatment