ABSTRACT
La impactación de los segundos molares inferiores permanentes es una patología con una incidencia del 0.03 or ciento a 0.04 por ciento del total de dientes retenidos, que en la mayoría de los casos debido a una posición impredecible del tercer molar, el resultado final es la exodoncia de ambas piezas dentarias.Dentro de los dispositivos de anclaje temporal, existen dos tipos, los minimplantes y las miniplacas. A través de este caso clínico se demuestra la eficiencia de las miniplacas en la verticalización de los segundos molares inferiores impactados sobre otras medidas terapéuticas debido a que su uso es un método predecible, rápido y seguro que no genera efectos secundarios indeseables. Además, estas miniplacas son colocadas a distancia de las piezas dentarias, por lo que no interfiere en los movimientos dentales.
Mandibular second molar impaction is a pathology with an incidence of 0.03% - 0.04% of the total of the impacted teeth due to animpredictible position of the third molar in most cases. As a consequence, where the final result is dental extraction of both teethThere are two types of temporary skeletal anchorage devices minimplants and miniplates. This case shows the miniplate efficiency in thesecond molar verticalization which is a predictible, fast and safe method without any side effects when compared with other treatments.In addition, miniplantes do not interfere with dental movements because they are placed far enough from the teeth.
Subject(s)
Humans , Female , Child , Tooth, Impacted/therapy , Orthodontic Anchorage Procedures/instrumentation , Tooth Movement Techniques/instrumentation , Tooth Movement Techniques/methods , Tooth, Impacted/diagnostic imaging , Dental Implantation, Endosseous/methods , Mandible , Molar/physiopathology , Radiography, Panoramic , Schools, DentalABSTRACT
Receiver Operating Characteristic (ROC) Curves are frequently used in biomedical informatics research to evaluate classification and prediction models to support decision, diagnosis, and prognosis. ROC analysis investigates the accuracy of models and has ability to separate positive from negative cases. It is especially useful in evaluating predictive models and compare to other tests which produce output values in a continuous range. Empirical ROC curve is jagged but a true ROC curve is smooth. For this purpose kernel smoothing were used. The Area Under ROC Curve (AUC) frequently is used as a measure of the effectiveness of diagnostic markers. In this study we compare estimation of this area based on normal assumptions and kernel smoothing. This study used measurements of TSH from patients and non-diseased people of congenital hypothyroidism screening in Isfahan province. Using the method, TSH ROC curves from Isfahani's infants were fitted. For evaluating of accuracy of this test, AUC and its standard error calculated. Also effectiveness of the kernel methods in comparison to other methods showed.
Subject(s)
ROC Curve , Thyroid Gland , HypothyroidismABSTRACT
We evaluated the factors [demographic, clinical, procedural and hospital-related factors] influencing length of hospital stay [LOS] of patients with Congestive Heart Failure [CHF]. Congestive heart failure is an imbalance in pump function in which the heart fails to maintain the circulation of blood adequately. CHF is a major medical problem with significant hospital costs in adults. There are growing numbers of CHF diagnosed each year. Consequently, providers are constantly challenged to find more cost effective ways to care for CHF patients without compromising quality of care. We used univariate and multivariate models to evaluate which demographic, clinical and administrative factors influenced length of stay in 100 patients with CHF admitted to Yahyanejad general hospitals between 2001 and 2003. One hundred patients were included in this study. Mean age 61 years, mean left ventricular ejection fraction 37%. Median length of hospital stay was 6 days [IQR 4, 9]. Longer than average length of stay, defined as >6 days, was associated with the presence of peripheral congestion, duration of treatment with intravenous diuretic, the development of renal impairment, other acute medical problems at admission, iatrogenic complications during hospital stay. Conclusions: Peripheral congestion, concomitant acute medical problems requiring specific treatment, were related to a longer than average length of hospital stay. Multivariate models only partly explained variance in hospital stay, suggesting the importance of pre and post-discharge factors, including the healthcare environment, the availability of primary and secondary care resources, and the threshold for hospital admission