Background: Papacarie pre-treatment of dentin surface has been reported to exhibit good bond strength values between dentin and composites. Its desirable properties like high pH, sites specify and anti-inflammatory response makes it a future material in place acid etching pre-treatment. Acid etching may cause sensitivity and collapse of dentinal matrix. Methods: This in-vitro study involved, 60 caries free extracted premolars, randomly divided into three groups. Control Group (Group A) No pre-treatment of dentin prior adhesive application. Experimental Group B acid etchant was applied before adhesive application. Experimental Group C Papacarie was used as a pre-treatment agent. All these specimens were tested for shear bond strength with the help of Universal Testing Machine. All the collected data was entered in SPSS version 20.0. ANOVA was used to determine the mean SBS (Shear Bond strength) values of control and experimental groups. Results The mean shear bond strength of material was 7.74±0.47 in group A, 17.80±1.43 in group B and 15.11±0.70 in group C. Group B showing better strength than other two groups. Conclusion: The study provides information about longevity of composite restorations and may help in extending the clinical usage of papacarie to avoid harmful effects of acid etching on dentin and pulpal tissue.
A better understanding of the Science of Dental materials as a subject depends upon theoretical knowledge and its clinical application. The multitude of teaching methodologies in the dental curriculum has been incorporated to determine learning outcomes. Objective: This study aimed to found the perception of BDS second-year students toward the subject of dental materials and evaluate the difficulty in learning and acquisition of concepts in this preclinical year. Methods: This cross sectional study was conducted among 130 students of BDS second year registered with University of Health Sciences, Lahore. Pre-designed questionnaire was used as research tool to determine the students’ perceptions towards teaching methodologies and understanding of dental Materials. Results: Only 53.7% of the students reported DM as an interesting subject. Satisfaction with content was 90% and delivery and pace of the lectures were reported at 79.3%. Majority of the student (86.8%) reported lecture materials easy to understand. The most useful method for learning and understanding this subject is group discussion 76.15%, followed by PowerPoint presentation 73.85%. The favored mode of assessment was MCQs (80%) followed by practical lab 66.93%. To improve learning 82.3% of the students recommended group discussion and integrated teaching method (77.6%). Conclusions: The majority of students found Dental material a difficult subject. A better understanding of this subject needs improvement in already applied teaching methodologies with an integrated teaching mode
Background: Amalgam was the material of choice for dental restorations due to its excellent mechanical properties, but the World Health Organization recommended that it should be phased out due to its environmental concerns. Aim: To determine the dental clinicians’ attitude to amalgam use during routine clinical practice in Lahore. Methods: Cross-sectional study was conducted among private practicing dentists in Lahore.Using convenience sampling, 100 proformas were dispersed. The questionnaire included informed consent along with demographic data such as gender and years of practice, 17 questions related to perceptionand practices, and seven questions about knowledge of dental amalgam restorations.Chi-square test was used to determine statistical significance. P value of less than 0.05 was considered significant. Results: Seventy four questionnaires were returned filled by participants.Majority of the participants, 51 (68.9%), performed no amalgam restorations, but those with 10 years or more experience still used the material at their practices. Dentists based on clinical experience were: less than 5 years=14(18.9%), 5-10 years =31(41.9%), and more than 10 years = 29(39.2%). Significant association, p=0.02, was observed between clinical experience of clinicians and the number of amalgam restorations performed weekly in their clinics. Practical implication=Health organizations often debate about amalgam safety and the environmental issues of mercury. After the devastating floods in Sindh, environmental issues are recently raised in Pakistan. Conclusion: According to this research, dental amalgam use within private dental practitioners is definitely on a decline in Lahore. Some senior dental practitioners with 10 years or more of experienceregularly used amalgam as a restorative material. MeSH words: Dental amalgam, General Practice, Dental,
Hepatitis B virus is the most common cause of death in developing country like Pakistan. Most common acute symptoms of this DNA virus are nausea, vomiting, abdominal pain, fatigue and jaundice skin and eyes. Mode of transmission is via blood and its products. Most commonly healthcare workers are the volunteer spreading the virus among the community because of lack of knowledge and improper teaching methodology and assessment methods. Identifying and rectifying the community health issues are very important. BDS and MBBS students' knowledge must be assessed and measures are needed to improve. Material and methods: Cross sectional study of two months had been conducted in Islam Medical and Dental College Sialkot to assess the knowledge of hepatitis B virus and their attitude towards hepatitis B patient’s care in clinical medical and dental OPD and wards. Close ended questionnaire to assess knowledge and attitude was given. Results: 83 students participated in this study. Mean age of students is 22 years. 41(49.39%) 3rd year BDS students and 42(50.60%) 3rd year MBBS students were included. 61.5% MBBS students had given correct answered about hepatitis B knowledge while 56% BDS students had given correct answered about attitude towards hepatitis B patient care. Conclusion: 3rd year MBBS students have better knowledge of hepatitis B virus than BDS students while BDS students have slightly better attitude towards hepatitis B patient care.
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