RESUMO
BACKGROUND: Safety signs are very important communication tools for accident prevention, fire safety, health hazard information, and emergency evacuation. However, they are helpful only when properly designed and understood by employees. OBJECTIVES: The purpose of the present study was to assess the awareness of health and safety signs amongst health care workers including doctors, dentists and paramedics in different health care sectors across Pakistan. METHODS: Data was collected via Google forms circulated through WhatsApp social media to predetermined groups of health care professionals to assess their understanding of safety signs across different health sectors. The survey included questions pertaining to awareness of 19 different health and safety signs complied with International Organization for Standardization 1710 and the Safety Signs and Signal Regulations 1996 chosen randomly. RESULTS: A total of 987 people participated in our study and were asked to comprehend the meaning of nineteen health and safety signs. The mean comprehension score for 19 signs was 42.2%. The mean score for warning signs was the lowest and fire safety signs was highest. The lowest comprehension scores were for oxygen cylinder sign (W029) 7.5% and highest for first aid sign (E003) 75.9%. Only two signs, that are first aid (E003) and mandatory gloves (M009) had acceptable comprehensive score of 75.9% and 73.7% respectively as per ISO 7010 i.e. >67%. Statistically significant differences were found only for trip hazard sign (W007) with respect to education and for risks of bomb explosion (W002), ionising radiation (W009), evacuation assembly point (E007), location of automated external heart defibrillator (E010) and mandatory gloves (M009) with work experience. CONCLUSION: Based on our results, we conclude that there is dire need of special and frequent training to better recognize the safety signs amongst health care employees since these kinds of interventions promote early detection of hazards and their associated risks. Thus, we propose that health care safety sign training must be included in every health care profession curriculum.
RESUMO
Background: Soft denture lining materials act as a cushion between the denture base and tissues. Alongside having many advantages, its main problem is candida growth due to its rubbery and porous texture. Many interventions have been performed to halt the growth of candida within soft lining materials such as the use of antifungal therapy and strict oral and denture hygiene but there are consequences such as recurrence, drug resistance, and toxicity related to these interventions. Since natural agents such as aloe vera and chitosan have been proven to have antibacterial and antifungal properties with minimum adverse effects, this study aimed to study the effectiveness of chitosan and aloe vera powders incorporated within denture soft lining materials against candida adherence. Methodology. A total of 60 soft-lining material samples were prepared that were equally divided into three groups, viz., group 1 (chitosan incorporation), group 2 (aloe vera incorporation), and group 3 (control). Candida was obtained from the microbiology lab to form a candidal suspension, diluted in 0.9% NaCl to match the McFarland standard bacteriologic solution. Samples were incubated at 37°C for 24 hours in test tubes containing 100 mL of the candidal suspension and 9.9 mL of the previously prepared Sabouraud dextrose agar. Crystal violet stain was used to stain the adhering cells by fixing them with methanol 80%. For each sample, the adhering candida cells were counted on three standard fields by using an inverted light microscope, and the mean of those fields was recorded. Results: The mean value for samples containing aloe vera was 41.15, while the mean values for samples containing chitosan and the control group were 16.05 and 79.1, respectively. Of all the three groups, aloe vera powder had a significant efficacy against candida growth as compared to the chitosan and control groups (P value = 0.001). Conclusion: Both herbal agents were effective against candida growth. In comparison, aloe vera was more effective against candida growth compared to chitosan.
