Ardabil University of Medical Sciences
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Evaluating problems and performance of complete prosthesis in Ardabil city in 1396
Get PDFIntroduction
The use of removable complete denture increases due to rising of age in societies. Nevertheless, patients who receive the complete denture report many problems while using them. The aim of this study was to evaluate the problems and function of removable complete denture in patients in Ardebil city.
Materials and methods
138 patients who were at least 1 years old from resiving removable complete denture examined at Ardabil city in 2017 year. Oral lesions that were evaluated including denture stomatitis، angular cheilitis، ulcer and epulis fissuratum. Denture function evaluated by PDA self-reported questionnaire. In addition, occlusion, vertical dimension of occlusion and retention evaluated in patients. Data were analyzed using SPSS 19 software.
Results
55 (39.3%) person was female and 83 (59.3%) person was male. The mean age of the patients was 64.8±9.3 years. Mean age of denture was 12.1 ± 6.8 years. The average score of the function of the denture in the field of cosmetic and speech was 8.2 ± 0.9, the mandibular function was 2.9 ± 0.8, the expectations of the patients was 3.7 ± 0.7, the maxillary function were 2.50.7 and the denture importance was 2.7 ± 0.7. The prevalence of stomatitis, ulcer, Angular cheilitis and Epulis fissuratum were 12.3%, 9.4%, 16% and 7.2% respectively. 73 (52.9%) cases had inaccurate occlution plan.56.5% cases had inaccurate cenric relation. Vertical dimension in occlusion was low in 66.6% and high in 10.9%. The prevalance of no retention was 34 (24.6%) cases.The prevalence of denture fracture and artificial tooth fracture were 10.2%, 10.9% respectively.
Conclusion
A significant percentage of the patients in the study had lips and mucosal lesions, and patients reported modest scores on their denture function. Most of the problems were related to the retention. It seems that a more suitable design of the palatal and replacement of the worn denture can be effective in reducing the problems of the denture and improving its function
Incidence of dental developmental anomalies in permanent dentition among Ardabil population, Iran, in 2015-2016
Get PDFBACKGROUND AND AIM: Dental anomalies are typically detected in radiographic screening. The present study was conducted with the aim of investigating the dental anomalies found in panoramic radiographs taken from the study population in Ardabil, Iran, in 2015-2016. METHODS: The present study was conducted on 1800 panoramic radiographs obtained from 799 men and 1001 women in the Radiology Department, Dental Faculty of Ardabil University of Medical Sciences, Ardabil. The radiographs were precisely evaluated in terms of various dental anomalies, including root dilaceration, missing teeth, impaction, retained deciduous, supernumerary teeth, peg lateral teeth, talon cusp, taurodontism, and lingual pit. The data were analyzed using the chi-square and Fisher’s exact tests. RESULTS: The results of this study revealed that 331 patients had at least one dental anomaly. Dilaceration with 42.0% was the most common anomaly. The other anomalies detected in the radiographs included missing teeth, impaction, lingual pit, peg lateral teeth, retained deciduous teeth, supernumerary teeth, talon cusp, and taurodontism with a rate of 20.2%, 18.4%, 10.8%, 10.2%, 7.8%, 6.6%, 1.5%, and 0.3%, respectively. No cases of microdontia, macrodontia, germination, and fusion were observed. Dental anomalies were more incident among women than men (P = 0.010). Furthermore, the detected anomalies had a higher rate in maxilla compared to mandible (P = 0.010). CONCLUSION: As the findings of this study indicated, dilaceration was the most common dental anomaly, followed by missing teeth and impaction, respectively
Application of ZnO and TiO2 nanoparticles coated onto montmorillonite in the presence of H2O2 for efficient removal of cephalexin from aqueous solutions
No full textThis study considers the feasibility of uptake of cephalexin, an emerging contaminant, from aqueous solutions by using green local montmorillonite (GLM), montmorillonite coated with ZnO (ZnO/GLM) and montmorillonite coated with TiO2 (TiO2/GLM) in the presence of H2O2. Batch adsorption experiments were carried out as a function of pH, initial concentration of the cephalexin, adsorbent dosage, contact time, and temperature. Finally, the adsorbents were characterized by XRD, SEM and FTIR analyses. XRD patterns showed dramatic changes in the adsorbents after loading with the nanoparticles, confirming successful placing of the nanoparticles onto GLM. The GLM mineral surface after nanoparticle loading appears to be fully exposed and more porous with irregular shapes in particles diameters of 1-50 microns. FTIR analyses also confirmed dramatic changes in surface functional groups after modification with these nanoparticles. The results showed that the removal efficiency of cephalexin was better at lower pH values. Totally, the removal efficiency increased with increase in adsorbent dosage and contact time and decreased with concentration and temperature increase. The thermodynamics values of ΔG o and ΔH o revealed that the adsorption process was spontaneous and exothermic. In isotherm study, the maximum adsorption capacities (qm) were obtained to be 7.82, 17.09 and 49.26 mg/g for GLM, ZnO/GLM and TiO2/GLM, respectively. Temkin constant (B T ) showed that adsorption of cephalexin from solution was exothermic for all three adsorbents
Alcohol intake and gastric cancer: Meta-analyses of published data versus individual participant data pooled analyses (StoP Project)
No full textBackground
Individual participant data pooled analyses allow access to non-published data and statistical reanalyses based on more homogeneous criteria than meta-analyses based on systematic reviews. We quantified the impact of publication-related biases and heterogeneity in data analysis and presentation in summary estimates of the association between alcohol drinking and gastric cancer.
Methods
We compared estimates obtained from conventional meta-analyses, using only data available in published reports from studies that take part in the Stomach Cancer Pooling (StoP) Project, with individual participant data pooled analyses including the same studies.
Results
A total of 22 studies from the StoP Project assessed the relation between alcohol intake and gastric cancer, 19 had specific data for levels of consumption and 18 according to cancer location; published reports addressing these associations were available from 18, 5 and 5 studies, respectively. The summary odds ratios [OR, (95%CI)] estimate obtained with published data for drinkers vs. non-drinkers was 10% higher than the one obtained with individual StoP data [18 vs. 22 studies: 1.21 (1.07–1.36) vs. 1.10 (0.99–1.23)] and more heterogeneous (I 2 : 63.6% vs 54.4%). In general, published data yielded less precise summary estimates (standard errors up to 2.6 times higher). Funnel plot analysis suggested publication bias.
Conclusion
Meta-analyses of the association between alcohol drinking and gastric cancer tended to overestimate the magnitude of the effects, possibly due to publication bias. Additionally, individual participant data pooled analyses yielded more precise estimates for different levels of exposure or cancer subtypes
Tobacco smoking and gastric cancer: Meta-Analyses of published data versus pooled analyses of individual participant data (StoP Project)
No full textTobacco smoking is one of the main risk factors for gastric cancer, but the magnitude of the association estimated by conventional systematic reviews and meta-Analyses might be inaccurate, due to heterogeneous reporting of data and publication bias. We aimed to quantify the combined impact of publication-related biases, and heterogeneity in data analysis or presentation, in the summary estimates obtained from conventional meta-Analyses. We compared results from individual participant data pooled-Analyses, including the studies in the Stomach Cancer Pooling (StoP) Project, with conventional meta-Analyses carried out using only data available in previously published reports from the same studies. Fromthe 23 studies in the StoP Project, 20 had published reports with information on smoking and gastric cancer, but only six had specific data for gastric cardia cancer and seven had data on the daily number of cigarettes smoked. Compared to the results obtained with the StoP database, conventional meta-Analyses overvalued the relation between ever smoking (summary odds ratios ranging from 7 higher for all studies to 22 higher for the risk of gastric cardia cancer) and yielded less precise summary estimates (SE �2.4 times higher). Additionally, funnel plot asymmetry and corresponding hypotheses tests were suggestive of publication bias. Conventional meta-Analyses and individual participant data pooled-Analyses reached similar conclusions on the direction of the association between smoking and gastric cancer. However, published data tended to overestimate the magnitude of the effects, possibly due to publication biases and limited the analyses by different levels of exposure or cancer subtypes. European Journal of Cancer Prevention 27:197-204 Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved
Comparison between four different types of finishing line designs on marginal adaptation of Zirconia coping ceramic crowns.
Get PDFIntroduction:
Marginal integrity is an important characteristic in clinical long-term restoration succes,which is influenced by the finishing line design.So this study aimed to evaluate the marginal adaptation of zirconia coping ceramic crowns with four different finishing line designs.
Materials and Methods:
A chamfer finishing line was designed on a maxillary second premolar,then trasformed into Deep Chamfer,Radial Shoulder and Shoulder.Four dies were milled using CAD/CAM system.10 impressions were made from each master die and poured.Then 10 zirconia copings were manufactured by CAD/CAM system from each master die. After cementation, the marginal fit of 40 zirconia copings was evaluated using a Stereomicroscope in two points on each aspect (Buccal ,Palatal ,Mesial & Distal).The data were statistically analysed using ANOVA,T-test and BONFERRONI Post-Hoc test.(P<0.05)
Results:
The lowest overall mean value of marginal Gap was recorded with Deep Chamfer finishing line design(15.91 µm±5.33),with Rounded Shoulder finishing line design(41.41 µm±7.85) then with Shoulder finishing line design(48.28 µm±11.28) and finally with Chamfer finishing line design(48.92 µm±11.69).
Conclusion:
The overall mean values of marginal adaptation were within the clinical acceptable range.The Deep Chamfer finishing line design recorded better overall marginal adaptation values than the other 3 finishing line designs.There was no significant difference in marginal integrity between the others
Epidemiological study of burns registered in Fatemi hospital in Ardabil, 2016
Get PDFBackground: Burns after traffic accidents, falls and interpersonal violence are the fourth most commonly damaged worldwide. Annually more than 11 million people suffered to sever burns that most of them need for interventions and according WHO statistics, yearly more than 300000 people die from fire-related burns and most of them occurred in low income countries. The aim of this study was Epidemiological study of burns registered in Fatemi hospital in Ardabil, 2016.
Methods: This cross-sectional descriptive study has been done on 200 burns registered in burn unit of Fatemi hospital in 2016. Information included age, sex, residence place (urban-rural), marital status, time and area of burn, percent and degree of burn, cause and mechanism of burn, hospitalized time and result of treatment completed by a checklist and analyzed by statistical methods in SPSS version 19.
Results: Of all patients, 118 (59%) were male, 62.5% rural and 50% single. Most of burns occurred in age group less than 10 with 33%. The most common cause of burns was hot liquids with 51.5%. Most of cases had burn in degree 2 (71%) and 53.5% of cases hospitalized five days in hospital. 93.5% of patients improved and discharged.
Conclusions: Results showed that most of burns in this study occurred in age group less than 10 year. So, that it is necessary to prevent these events in future by taking the necessary measures and control and prevention by families
Survey Performance of Critical Care Nurses in Nasogastric Tube Feeding with Existing Standards in Ardabil Hospitals
Get PDFBackground and Aim: Nasogastric tube feeding is a good nutritional method for patients in intensive care units. The implementation of nasogastric tube feeding is the responsibility of nurses. Improving the performance of nurses in nasogastric tube feeding reduces hospital costs and provides patients with better clinical outcomes. The purpose of this study was to compare the performance of nurses in nasogastric tube feeding with existing standards in Ardabil hospitals.
Methods and Materials: In this descriptive-analytical study, a demographic questionnaire and a standard nutritional checklist were used. The performance of 66 nurses in intensive care units of Ardebil hospitals was observed in 3 shifts in the morning, evening and night, and a total of 200 observations were performed. Using the Spss 24, the data were analyzed. T-test and one-way ANOVA analysis were used to determine the effects of demographic factors on nurses' performance. Significance level was considered 0.05.
Results: The average overall performance of the nurses in intensive care units of Ardabil hospitals in nasogastric tubes feeding was 68.8 with a standard deviation of 6.9 indicating a moderate level of performance. The results showed that nurses' performance was significantly different with P≤0.001 in the three stages before, during and after tube feeding. In the present study, demographic factors and different shifts had no significant difference in the performance of nurses in nasogastric tube feeding.
Conclusion: The results of this study showed that the mean score of nurses' performance is moderate. Therefore, it is essential to train nurses on practical standards and to follow tube feeding protocols
In vitro comparison of antimicrobial activity of conventional fluoride varnishes containing xylitol and casein phosphopeptide-amorphous calcium phosphate
Get PDFObjective: Different fluoride varnishes are used for the prevention of dental caries. The aim of this study was to compare the antimicrobial effect of different fluoride varnishes, containing xylitol and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP), on Streptococcus mutans. Materials and Methods: In this in vitro study, the antibacterial effects of four varnishes, namely Polimo and V-varnish (containing xylitol), MI varnish (containing CPP-ACP), and Preventa, were evaluated against S. mutans. The disc diffusion method was used for testing the bacterial sensitivity. The data were analyzed using the Kruskal–Wallis and Mann–Whitney U-tests. Results: According to the results, Polimo showed the highest antibacterial effects, compared to the other three varnishes (P ≤ 0.05). Growth inhibition zones were not observed in V-varnish and Preventa. The mean diameter of inhibition zone around the MI varnish was significantly higher, compared to those of the V varnish and Preventa (P ≤ 0.05). Conclusion: As the findings indicated, the fluoride varnish containing xylitol and CPP-ACP could be more effective iAQ1n the prevention of dental caries
