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Objective: To compare the elastic modulus, flexural strength, and hardness of an experimental resin based composite (RBC) with and without containing silver nanoparticles (AgNPs) and bioactive glass (BAG) with a commercially available RBC. Methods: This study was conducted, during the period August 2016-May 2018, at the Department of Dental Materials, Peshawar Dental College, Peshawar (Pakistan) and Department of Chemistry, University of Montreal, Canada. Test specimens made in the commercial RBC acted as Group-1 (G1). An experimental RBC containing 70 wt % filler content was synthesized. It was first used as such to prepare test specimens to act as the experimental control group (G2). This RBC was then modified by adding various amounts of BAG (5%, 10% and 15%) and a fixed amount of 0.009% AgNPs to use the so modified RBCs for preparing the test specimens to belong to three groups (G3, G4 & G5). The AgNPs had been synthesized in situ by reduction of salt during photo-polymerization. Flexural strength (FS), elastic modulus (EM) and Vickers hardness were determined using universal testing machine and hardness tester respectively. Data were analyzed using one-way ANOVA and Tukey post-hoc test. Results: Except for G3 restorations showing significantly lower mean FS value, the FS for those in the other groups were not significantly different (p>0.05). Elastic modulus of the experimental RBC restorations was though higher than those of the others but the difference was statistically insignificant (p>0.05). Reduced Vickers hardness values were documented for the restorations in the G4 and G5 compared to those in the G3 but again the difference was insignificant (p>0.05). Flexural strength and hardness values of the test specimens in the experimental RBCs were significantly lower than those made in the commercial hybrid RBC (p<0.05). Conclusion: BAG and AgNPs addition to the experimental RBC in the mentioned concentration adversely affected the tested mechanical properties. [ABSTRACT FROM AUTHOR]

Objectives: To determine the impact of missing teeth on the level of Oral Health Related Quality of Life (OHRQoL)in subjects reporting at a teaching dental hospital. Method:Using a structured Performa incorporating the 12-item General Oral Health Assessment Index (GOHAI) Questionnaire, and a consecutive (non-probability) sampling technique, data relating to 182 subjects fulfilling the study inclusion and exclusion criteria were collected using the method of interview and examination.Subjects responses to each of the 12 items of the GOHAI questionnaire were recorded to determine the impact of missing teeth on OHRQoL. Each of the GOHAI item had a maximum score of 5 thus giving a total of 60 as the maximum score. A high score of GOHAI indicated better ORHRQoL. The ORHRQol of subject was taken as good when the GOHAI score ranged 57-60, average when 51-56and poor when <50. Results: Subjects had a mean age of 35.6 ± 5.8 (S. Dev) with males as 50.5% compared to females (49.5%). The mean GOHAI score for all the subjects was 48.4 ± 8.2 as compared to the mean GOHAI score of 48.4 ± 8.2 for males and 47.6 ± 8.3 for females. The ORHRQoL was good in only 27%. A high proportion of subjects (53%) had poor OHRQoL. The number and the frontal location of the missing teeth adversely impacted OHRQoL. Missing maxillary anterior teeth had the most negative effect on OHRQoL. Missing mandibular first molar was the most common missing tooth either alone or in combination with other missing teeth among the subjects studied. The most important GOHAI items contributing to the adverse impact on the OHRQoL of the majority of subjects with some missing teeth were;often worried/concerned about dental problems and never having been pleased or happy with the look of their teeth and gum. Conclusion: The adverse effect of missing teeth on OHRQoL was substantial necessitating the importance of preventing the condition of missing teeth or restoring when missing and maintaining the oral health of subjects. [ABSTRACT FROM AUTHOR]

The article discusses about the understanding of aspects ensuring quality education and training in a medical and dental institution. It focuses on understanding of the criterion for assessment of research articles which used for the appointment and promotion of the faculty in medical including dental institutions; and also determining the relevance and quality of research articles.

Objectives: To report the frequency of common complications and their levels in metal-ceramic fixed dental prostheses (MC-FDPs). Methods:A Descriptive Cross-sectional study was conducted at the Prosthodontics Department, Khyber College of Dentistry Peshawar from January 2011 to October 2012. Using a structured proforma, data from 139 subjects fulfilling the inclusion and exclusion criteria for the study and reporting complications in their MC- FDPs were collected using the method of interview, clinical & radiographic examination. Results: Of 139 subjects (Mean age = 34±6.4 Years), 81 (58.3%) were males and 58 (41.7%) were females with a male to female ratio of 1.4:1. De-cementation was the most common complication (41.7%). Least common complication was secondary caries (6.5%). Level-1 complications were more prevalent (77.7%) than level-2 complications (22.3%). In 91.4% cases, complications occurred before the FDP completed their fifth-years' service life with 25.2% of these occurring within the first years' service life. Conclusion:Irrespective of the type of complications, level-1 complications were more common with decementation being the most common complication. One-quarter of all the complications occurred within the first-year service life of the FDPs highlighting concern over the quality of the provided MC-FDPs. [ABSTRACT FROM AUTHOR]