Introduction: Caries and dental trauma are mostly responsible for the loss of hard tooth tissue. However, other destructive processes that originate on the external surface and affect the teeth and cause irreversible loss to the tooth structure are also described such as erosion, abrasion, attrition and abfraction.
Objective: The purpose of this study was a finite elements method study of the mechanism of abfraction formation caused by external loads.
Material and methods: A two-dimensional mathematical finite elements analysis model was generated for analysis, using intact normal human mandibular canine. The finite elements are type of 2D. A denser mesh with a large number of EF was build in the area of interest in order to obtain the best replica of the tooth and the most faithful analyses of the situation.
Results: As a result of the present study using simulations of different values and positions of the loads, both vertical and oblique, on a healthy tooth, it was evident that the most stress-prone area with the highest risk of mechanic damage is the cervical area of the tooth.
Conclusions: Oblique loads lead to lateral flexure of the tooth and vertical loads lead to axial compression. Vertical direction of loads result in higher values of the stress in the lesionned area. The study shows that one of the possible causes of cervical lesion is the direction and magnitude of loads combined with the morphology of the tooth in question.
Category Archives: Original Research
Atrioventricular Blocks And Bundle Branch Blocks In Acute Miocardial Infarction
Background: Although atrioventricular (AV) blocks and bundle branch (BB) blocks are common complications of acute myocardial infarction (MI), patients characteristics and association with outcomes remain poorly defined.
Material and method: A prospective study of 341 consecutive patients admitted to the Clinic of Cardiology of the Institute of Cardiovascular Diseases Târgu Mureș, from January 31, 2008 to December 31, 2010, with ST-segment elevation myocardial infarction. Patients underwent routine clinical exam, lab tests, echocardiogram.
Results: The incidence of AV blocks complicating myocardial infarction was 10.85% and for BB blocks was 11.14%. Statistically significant correlations were found between AV blocks or BB blocks and age (p<0.01), arterial hypertension (p<0.02), and localization of myocardial infarction (p<0.001).
Conclusions: Post-MI blocks are more common in elderly patients (70–80 years and over), in patients with arterial hypertension and in case of inferior localization of the MI. However no statistically sifgnificant correlations were found between the occurance of conduction disorders post acute MI and some important risk factors such as diabetes, smoker satus or hypercholesterolemia.
Decision Support System in Dental Practice. Evaluation of Dental Professionals Acceptance Level
Objective: The aim of this study is to assess the level of acceptance by the dental practitioners to implement a software application that allows a presumptive diagnosis of the systemic diseases based on the oral manifestations.
Methods: First we developed a questionnaire to assess the degree of acceptance for the implementation of a dental patient’s management information system. The initial questionnaire was applied to a number of 54 dentists from several cities. The questionnaire contains 6 questions evolving from simple to complex. The final evaluation was made after the presentation of the dental patients management software application, and respondents were asked to complete an evaluation questionnaire regarding the application submitted and its applicability in the dental office.
Results: We compared the scores average from the final questionnaire, for the groups formed after evaluating the first questionnaire results.
Conclusions: Most of the respondents found this computer based decision support system to be easy to use, scientifically well documented and enables accurate and quality documentation of patient data.
Clinical, Paraclinical and Histological Considerations for Coeliac Disease in Children
Introduction: Coeliac disease is an autoimmune enteropathy caused by gluten intolerance in genetically susceptible people. Gluten is a protein found in food containing wheat, oat, barley, rye. It can start with typical (classical) gastro-intestinal symptoms, atypical symptoms or may be silent (asymptomatic).
bjectives: Evaluation of the anthropometric, clinical, paraclinical and histopatological data of children with coeliac disease hospitalised at the Pediatric Clinic I in Târgu Mureş.
Material and method: The work is based on a study conducted retrospectively during 2006-2010. From the total number of 10982 patients, 25 were admitted for malabsorption syndrome and 12 out of these, with coeliac disease. The diagnosis has been set according to anamnesis, clinical examination, serology tests, histopathological and immunohistochemical test.
Results: Eight children with coeliac disease were older than 2 years of age and 4 children younger than 2 years of age. Two-thirds of the patients showed classical symptoms and one-third an asymptomatic form. The IgA type endomysial antibodies (IgA EMA) were positive in all children. Histopathologic and immunohistochemical tests were carried out in 58.3% of the cases.
Conclusions: The classical symptoms were prevalent. Anemia, weight loss, diarrhoea and growth failure were the most frequent signs and symptoms. Type 3c according to histopathological modified Marsh-Oberhuber classification was present in the majority of the cases. Serological screening (IgA EMA) is recommended in children presenting with weight loss, ferriprive anemia that does not respond to oral iron therapy, and growth failure.
Course and Stability Diagnosis over Time in Functional Psychosis
Introduction: Diagnosis stability and clinical course of functional psychoses are complex phenomena and represent an important aspect for clinical practice and research. Diagnosis stability is the degree to which a diagnosis remains constant between a baseline and a follow-up subjects assessments.
Material and method: This work is part of a project developed in Timisoara Psychiatric Clinic (PTTEP) starting with 1985 and is a longitudinal study of functional psychosis. Subjects (59) were selected based on inclusion criteria. The following parameters were analyzed: socio-demographic characteristics of each subject, the average duration of evolution, diagnosis of the first episode of psychosis and diagnosis after 5 and 10 years of evolution.
Results: Sample study analysis shows that most subjects have changed their diagnosis after a period of between 5 to 8 years after the first episode of psychosis. Usually, after a period of about 10 years since the first episode of psychosis the diagnosis remains stable with the appearance of the same kind of episodes. It can be noticed that the most stable diagnosis was of delusional disorder followed by schizophrenia. On the opposite side – the most unstable diagnosis was of acute and transient psychotic disorder.
Conclusion: The clinical diagnosis changes during the first 5 to 7 years of evolution after the first episode of psychosis and becomes stable after about 10 years.
Evaluation of the Presence of Volatile Organic Compounds in the Outdoor Air in Tîrgu Mureş
Objectives: Many toxic compounds are present in automobiles exhaust gases. Concentration of these compounds is markedly increased when a defective engine is running. Presence of exhaust gases was linked with asthma, neurotoxicity, cancer and other serious health hazards. The goal of this work was to measure the concentration of volatile organic compounds that are present in the atmosphere when a defective vehicle passes by.
Methods: A head space gas chromatographic technique coupled with flame ionization detection was used to measure total concentration of volatile organic compounds into the air.
Results: Unexpectedly high concentrations of volatile organic compounds, up to 1.04 mg C/L of air, were measured in outdoor air. Every day high number of children is passing through these tested areas when they go to school or back home from school being exposed to such high concentrations of pollutants.
Conclusions: Faulty cars are the major source of volatile organic compounds and children can be affected by exposure to peak concentrations of such substances.
Anthropometric Assessment of Children with Malignant Disease
Introduction: The nutritional evaluation of the children with cancer includes medical history, physical examination, anthropometric measurement and laboratory data.
Objective: To assess the anthropometric parameters in children with malignant disease compared to children with a non-oncologic disease.
Material and method: A prospective study was performed on 73 children hospitalized in the Pediatric Clinic I Tg. Mures, between November 2009 – January 2011. The children were divided into two groups: group 1, children with malignant disease (27 children) and group 2-control group, children with different pediatric disease (46 children). Anthropometric measurements: weight, height, body mass index, middle upper arm circumference, tricipital skin fold thickness were performed. The values of parameters were converted in Z score for age and sex using Switzerland Growth Chart 1989. We studied the anthropometric parameters compared to the two groups and performed statistical correlations.
Results: We observed a low weight at group I (-0.86 SD), but not in group II (0.2 SD), with a statistically significant difference p=0.002. The height of children in group I was much lower (-0.74 SD) from group II (0.4 SD) with p=0.0019. We also found a statistically significant difference among the anthropometric parameters of the arm: middle upper arm circumference (-1.5 SD versus -0.55 SD) with p=0.0311 and tricipital skin fold thickness (-1.22 SD versus -0.32 SD) with p=0.0093.
Conclusions: Weight, height, MUAC and TSF are significantly lower at children with cancer compared to children with nononcological diseases. The arms anthropometry better identify malnutrition in children with cancer than simply assessing weight or height measurements.
Use of Dentifrices and Fluoride Supplements by Preschool Children – a Pilot Study
Aim: The purpose of this pilot study was to collect information about tooth brushing habits of preschool children in Targu-Mures and to identify the usage of fluoride (F) supplements.
Material and methods: A structured questionnaire was completed by the parents of 81 children aged 3 to 6 years (37 girls and 44 boys) regarding the tooth cleaning habits of their children and use of F supplements. Chi-square test for independence and trend was used to determine the relation between age of children and quantity of toothpaste used and frequency of tooth brushing, respectively.
Results: All parents claimed that fluoride dentifrices were used and tooth brushing of children was supervised. 24.69% of the children have started tooth brushing before the age of 2 years. Most of the children brushed their teeth at least twice a day (59.25%) and used more than an optimal amount of toothpaste (60.49%). A statistically significant association between children’s age and amount of dentifrice used (p = 0.0496) and also a significant linear trend (p = 0.0216) was found. We also found a significant association (p = 0.0246) and a significant linear trend (p = 0.0029) between the age of children and frequency of tooth brushing. Only 13.58% of the children received F supplements.
Conclusion: Special attention should be given to the amount of toothpaste used by children younger than 6 years in order to avoid uncontrolled fluoride ingestion. Before administration of F supplements, the fluoride intake from other sources should be investigated.
Family Insertion in Endogenous Psychoses
Background: This paper is an early study of a larger project conducted in Psychiatric Clinic Timişoara which aims to provide new light on family insertion of patients with endogenous psychosis. The purpose of the paper is to analyze patients diagnosed with endogenous psychosis by socio-demographic and psychopathological parameters with emphasis on family, regarding three dimensions (family of origin, their own family and their offspring).
Material and methods: The study is based on 4 groups of patients known as group A (which includes patients diagnosed with schizophrenia), group B (patients diagnosed with schizoaffective disorder), group C (patients with persistent delusional disorder) and group D (which includes patients with a diagnosis of bipolar disorder).
Results: There were no significant differences related to psychiatric history in family of origin. Patients with schizophrenia and schizoaffective disorder rarely found a family, and their fertility is less compared to other forms of psychosis. Most endogenous psychosis women are married, and the family stability is higher among men with schizophrenia and schizoaffective disorder. More frequent own family occurrence in patients with endogenous psychosis is correlated with average age of 33 years, high school education and employment status. Social and family inclusion is increased in the patients with bipolar affective disorder.
Conclusions: There are differences between groups of endogenous psychoses, both in terms of socio-demographic characteristics, their correlation to family insertion and to their own family and offspring of psychotic patients.
Acute Kidney Injury after Cardiac Surgery
Background: Renal dysfunction is one of the most common complications after cardiac surgery. The major concern is that despite advances in bypass techniques, intensive care and delivery of hemodialysis, mortality and morbidity associated with renal failure have not markedly changed in the last decade. The purpose of this work was to study the incidence of renal dysfunction after cardiac surgery, analyzing the possible causes, associated risk factors and treatment methods used.
Material and methods: In this prospective observational study we analyzed patients undergoing open-heart surgery between October 1, 2010 – December 15, 2010 at the Clinic of Cardiac Surgery Târgu Mureș. Blood urea nitrogen and creatinine level were recorded for all patients before and after surgery, patients age, sex, type of surgical intervention, length of cardiopulmonary bypass, and the degree of intraoperative hypothermia, hemodilution and postoperative hemodynamic function were noted.
Results: In this period 89 patients underwent cardiac surgery. Renal dysfunction developed in 20.2% of the patients and was more common in patients with complex surgery with prolonged cardiopulmonary bypass (p<0.0167), in patients with intraoperative hemodynamic instability. Other intraoperative factors, such as hemoglobin level lower than 8 g/dl (p=0.0103), postoperative hemodynamic dysfunction and use of vasoconstrictor agents also influenced the development of renal dysfunction.
Conclusions. Cardiac surgery is associated with a relative high incidence of renal dysfunction. Risk factors for this syndrome are varied and involve hemodynamic and inflammatory changes, but factors such as the body temperature and hemoglobin level during extracorporeal circulation could have a significant contribution.