Effect of Dental Chair Light on Enamel Bonding of Orthodontic Brackets Using Light Cure Based Adhesive System: An In-Vitro Study

2016-10-31T23-36-36Z
Source: Acta Informatica Medica
Anil Tiwari, Tarulatha Shyagali, Sarvraj Kohli, Rishi Joshi, Abhishek Gupta, and Rana Tiwari.
Aim: The aim of this in vitro study was to evaluate the influence of the Dental chair light on the bond strength of light cured composite resin. Materials and Methods: Sixty therapeutically extracted human premolar teeth were randomly allocated to two groups of 30 specimens each. In both groups light cured composite resin (Transbond XT) and MBT premolar metal brackets (3M Unitek) was used to bond brackets. In group I and II light curing was done using Light-emitting diode light curing units without and with the dental chair light respectively. After bonding, all samples were stored in distilled water at room temperature for 24 hours and subsequently tested for shear bond strength and Adhesive Remnant Index (ARI) scores. Data was subjected to Mann Whitney U statistical test. Results: Results indicated that there was significantly higher shear bond strength (7.71 ± 1.90) for the Group II (composite cured with LED and dental chair light ) compared with Group I (composite cured with LED LCU only) (5.74 ± 1.13).the obtained difference was statistically significant. There was no statistical significant difference between ARI scores in between the groups. Conclusions: light cure bonding with dental chair light switched on will produce greater bond strength than the conventional bonding. However, the ARI score were similar to both the groups. It is advised that the inexperienced orthodontist should always switch off the dental chair light while bonding for enough working time during the bracket placement.


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Role of Endothelial Cell Function Assessment Using Flow-mediated Dilation for Diagnosing Coronary Artery Disease in Low-risk Patients

2016-10-31T23-36-36Z
Source: Acta Informatica Medica
Seyed Mahmoud Nouraei, Ali Ghaemian,Hanieh Shiraj,Reza Ali Mohammadpour, and Alireza Malekrah.
Introduction: Flow-mediated dilation (FMD) measurement in the brachial artery (BA) is a method of endothelial cell function assessment. We can use it to predict atherosclerotic coronary artery disease. We investigated the predictive value of FMD for the presence of coronary artery disease (CAD) in a low-risk population of patients without major (CAD) risk factors. Materials and Methods: Three hundred and ninety-seven patients (age 53.2±9 years; 194 men) with chest pain admitted for coronary angiography were enrolled in this study. FMD was measured in the BA before coronary angiography using high-resolution ultrasound. Results: Coronary angiography was normal in (151)patient, (149) with single and (97) multi-vessel disease. FMD was significantly higher in normal coronary groupagainst patients with coronary artery disease (11.1±2.6% vs. 6.8±3.1%; P


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Designing and Implementation of Retina Image Drawing System and Automatic Report Generation from Retina Examinations

2016-10-31T23-36-36Z
Source: Acta Informatica Medica
Reza Safdari, Mehrshad Mokhtaran, Shahram Tahmasebian.
Introduction: Electronic medical records as one of major parts of electronic health records is an important application of Medical Informatics. EMR includes different types of data, Graphical items being one of these data types. To this end, a standard structure for storing and recovering and finally exchanging this data type is required. In order to standardize information items in this research, UMLS standard is used. In this research, graphical information from fondues designing in retina surgery forms is used for the task of implementation. Implementation: Three-layer software architecture is used for implementation of this system, which includes user interface, data base access and business logic. XML database is used for storing and exchanging of data. User interface is designed by the means of Adobe Flash. Also in the user interface for eye examinations, appropriate icons compatible with current pathologies in retina examinations are considered and UMLS codes are used for standardizations purposes. Results: As this project is independently implemented in Adobe Flash, it can be run in most of electronic patient records software. For evaluation purposes of this research, an EMR system for eye clinics is used. Tree structure is used for data entry and finally a text report based on the entered data will be generated. By storing graphical items in this software editing and searching in medical concepts and also comparing features will be available. Conclusion: One of the data items that we encounter in various medical records is graphical data. In order to cover the patient's complete electronic medical records, the Electronic Implementation of this information is important. For this purpose, graphical items in retina surgery forms were used and finally a software application for drawing retina picture was developed. Also, XML files were used for the purpose of storing valuable medical data from the pictures, and also UMLS were applied for the standardization purpose. The developed software is currently being used in some of eye clinics in Iran.


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Assessment of physicians' knowledge in transfusion medicine in eastern part of Turkey

2016-10-31T07-16-56Z
Source: Medicine Science | International Medical Journal
Ali Fettah, Duygu Kara, Gökçe Pınar Reis, Alev Cansu Certel, Soner Sertan Kara.
Transfusion of blood and blood components is one of the most common medical procedures in the developed world. Knowledge of physicians about blood transfusion is the most important determinant of their approach towards blood transfusion. In this study, we aimed to assess clinicians' basic knowledge regarding transfusion medicine through a questionnaire in a regional hospital. One hundred and one physicians including general practitioners, resident physicians, and specialists participated in the study. The participants were tested with a questionnaire consisting of 20 questions about transfusion medicine. Their scores were compared with regard to their departments, age and experience in medicine. The mean age of study population was 33.1±6 years. Of the total, 70 (69.3%) were male and the average year in medical practice was 7.3±5.8 years. Overall, 52% of the questions were correctly answered. The proportion of correct answers to the questions about basic knowledge, clinical use of blood, and transfusion reactions were as; 52.7%, 54.7%, and 47.3%, respectively. Thirty-four (33.7%) participants scored higher than 60 points, out of 100 points. The average score of total knowledge of participants about transfusion medicine was 52±10. The total knowledge scores of groups including internal departments, surgical departments, and emergency medicine were 55.7±10.2, 51.5±8.3, and 46±10.3, respectively and the differences between three groups were significant (p=0.001) . Also, a positive correlation has been shown between age, experience in medicine and total awareness score in transfusion medicine. The study yielded low/moderate levels of knowledge about transfusion medicine and it was concluded that additional education in transfusion medicine is necessary in all specialties and at each phases of medical practice.


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