186 research outputs found

    A Comparison of Tennessee\u27s Revenue Potential, Utilization, Tax Burden, and Educational Effort With Selected States

    Get PDF
    Purpose. The purpose of this study was to compare Tennessee\u27s revenue potential, utilization, tax burden, and educational effort with bordering states and the Southeastern states. (Abstract shortened.

    Dislodgement resistance of modified resin-bonded fixed partial dentures utilizing tooth undercuts: an in vitro study

    Get PDF
    STATEMENT OF PROBLEM: Over the years, resin-bonded fixed partial dentures (RBFPDs) have gone through substantial development and refinement. Several studies examined the biomechanics of tooth preparation and framework design in relation to the success rate of RBFPDs and considered retention and resistance form essential for increase of clinical retention. However, these criteria required preparations to be more invasive, which violates not only the original intentions of the RBFPD, but may also have an adverse effect on retention due to loss of enamel, an important factor in bonding. PURPOSE: The object of this in vitro study was to compare the dislodgement resistance of the new types of RBFPDs, the conventional three-unit fixed partial denture, and conventional design of RBFPD (Maryland bridge). MATERIAL AND METHODS: Fifty resin mandibular left second premolars and second molars were prepared on dentiforms, according to the RBFPD design. After model fabrication (five group, n = 10), prostheses were fabricated and cemented with zinc phosphate cement. After cementation, the specimens were subjected to tensile loading at a cross head speed of 4 mm/min in a universal testing machine. The separation load was recorded and analyzed statistically using one-way analysis of variance followed by Duncan's multiple range test. RESULTS: Group V, the pin-retained RBFPDs, had the highest mean dislodgement resistance, whereas specimens of group II, the conventional RBFPDs, exhibited a significantly lower mean dislodgement resistance compared to the other 4 groups (P .05). Group V had the highest mean MPa (N/mm(2)) (P .05). CONCLUSION: Within the limits of the design of this in vitro study, it was concluded that: 1. The modified RBFPDs which utilizes the original tooth undercuts and requires no tooth preparation, compared with the conventional design of RBFPDs, has significantly high dislodgement resistance (P .05). 3. The pin-retained FPDs showed a high dislodgement resistance compared to the conventional three-unit FPDs (P < .05).ope

    Tooth Reduction Guide Using Silicone Registration Material Along with Vacuum-Formed Thermoplastic Matrix

    Full text link
    Adequate tooth reduction is a prerequisite for function, esthetics, and longevity of fixed restorations. A tooth reduction guide may be useful for establishing the proper angulation of the tooth and maximizing periodontal health and restorative success. This article describes a simple and versatile technique for an accurate evaluation of tooth reduction for fixed restorations by using a color-contrasting positive guide of a silicone occlusal registration material processed inside a vacuum-formed clear thermoplastic matrix.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73355/1/j.1532-849X.2009.00506.x.pd

    Geomorphological study of Kleinovitikos stream drainage network (Trikala prefecture - western Thessaly)

    Get PDF
    To Κλεινοβίτικο ρέμα είναι ένας από τους παραποτάμους του Πηνειού ποταμού στην Δυτική Θεσσαλία. Η Λεκάνη απορροής του αποστραγγίζει τμήματα των ορεινών όγκων του Κόζιακα και της οροσειράς της Νότιας Πίνδου. Στην παρούσα εργασία έγινε ποσοτική ανάλυση του υδρογραφικού δικτύου και διερευνήθηκε η σχέση της τεκτονικής με τις διευθύνσεις ανάπτυξης του υδροκρίτη και των κλάδων του υδρογραφικού δικτύου. Ο κύριος κλάδος του υδρογραφικού δικτύου είναι 6ης τάξης, ενώ η κυριαρχούσα μορφή του είναι η κλιμακωτή. Οι μορφολογικές κλίσεις των πρανών της λεκάνης παρουσιάζουν μεγάλες διακυμάνσεις με τις ομαλές και μέτριες τιμές μορφολογικών κλίσεων να αντιπροσωπεύουν περισσότερο μορφές διάβρωσης ενώ οι απότομες κλίσεις εκφράζουν γεωλογικές και τεκτονικές δομές. Κατά την ποσοτική ανάλυση του υδρογραφικού δικτύου διαπιστώθηκε ότι η γεωλογική και η τεκτονική δομή της περιοχής επιδρά άμεσα στην ανάπτυξη του. Επιπλέον, στις τιμές της υδρογραφικής πυκνότητας και συχνότητας επενεργεί η λιθολογική ανομοιογένεια των σχηματισμών της λεκάνης απορροής. Στην διεύθυνση του υδροκρίτη της λεκάνης απορροής επιδρά η λιθολογία και οι δευτερεύουσες διαρρήξεις. Οι κλάδοι 1ης έως και 3ης τάξης του υδρογραφικού δικτύου επηρεάζονται από νεοτεκτονικές διαρρήξεις, οι κλάδοι 4ης και 5ης τάξης επηρεάζονται από νεοτεκτονικές αλλά και παλαιότερες αλπικές διαρρήξεις ενώ ο κλάδος <?,ς τάξης επηρεάζεται από αλπικές διαρρήξειςThe Kleinovitikos stream is a tributary ofPineios River in the Western Thessaly. Its basin drainages parts of mountain range of Southern Pindos as well as the mountain of Koziaka. In this study a quantitative analysis of drainage network was accomplished and the relation of tectonics features with the watershed and the channels of drainage network were investigated. The main channel of the drainage network is of 6th order, while the dominated type of the network is the trellis drainage pattern. The morphological slopes of the basin show various fluctuations. The gentle slopes express erosional landforms while the steep ones represent geological and tectonic structures. It was noted by the quantitative analysis of the drainage network that the geological and tectonic structure of the area affects in its evolution. Moreover, the outcrop of heterogeneous lithological formations in the basin affects the values of drainage density and frequency. The lithology and the secondary cracks involve in the prevailing direction of the watershed. The streams of 1st -3r order are controlled by the younger cracks; the younger cracks as well as the older Alpine cracks have an influence on the streams of 4' and 5' order, and the Alpine tectonic activity affects the stream of 6' order

    The barriers and drivers of seafood consumption in Australia: A narrative literature review

    Get PDF
    Although seafood is considered to be an important part of a healthy and balanced diet, many Australians still do not consume the recommended amounts for good health. Fish is an excellent source of protein, omega-3 fatty acids and other nutrients, and studies have shown that seafood-rich diets can have a lower impact on the environment than diets high in other animal proteins. Concerns about health and sustainability have led to an increased interest in understanding consumers' attitudes toward seafood. This review aims to assess the current knowledge on drivers and barriers to seafood consumption in the Australian context. Systematic search strategies were used to identify relevant peer-reviewed journal articles from three electronic databases (SCOPUS, Web of Science and Science Direct) and grey literature reports from targeted government and industry websites. Accepted studies investigated drivers and/or barriers to seafood consumption in Australia through qualitative, quantitative, or mixed method designs. Initial searches identified 504 publications from which fourteen met the criteria for the review process. The reviewed studies revealed that influences on seafood consumption in Australia are similar to those identified in other developed countries. The leading drivers of seafood consumption are health, taste, and convenience, while the main barriers are price, availability, concerns about quality, and a lack of confidence in selecting and preparing seafood. Some possible intervention strategies targeted toward these factors are explored in the discussion. Future research should focus on designing and implementing specific interventions so that their effectiveness in increasing seafood consumption in Australia can be assessed

    Acute ECG ST-segment elevation mimicking myocardial infarction in a patient with pulmonary embolism

    Get PDF
    Pulmonary embolism is a common cardiovascular emergency, but it is still often misdiagnosed due to its unspecific clinical symptoms. Elevated troponin concentrations are associated with greater morbidity and mortality in patients with pulmonary embolism. Right ventricular ischemia due to increased right ventricular afterload is believed to be underlying mechanism of elevated troponin values in acute pulmonary embolism, but a paradoxical coronary artery embolism through opened intra-artrial communication is another possible explanation as shown in our case report

    Propensity score matching in estimating the effect of managerial education on academic planning behavior. Study design: a cross-sectional study

    Get PDF
    <p>Abstract</p> <p>Background</p> <p>In many academic settings teaching a particular topic is applied to every student enrolled in the same academic year, it is a difficult task for researchers to design a randomized control group study. This research aimed to estimate the effect of teaching management and planning on increasing academic planning behavior (APB), using propensity score matching (PSM).</p> <p>Methods</p> <p>In a cross-sectional survey utilizing a self-reported structured questionnaire on a systematic random sample of 421 students in Hanoi Medical University, one of the eight medical schools in Vietnam, this evaluation study adopted regression procedures to assess model fit, then PSM to create a matched control group in order to allow for evaluating the effect of management education.</p> <p>Results</p> <p>The study showed both direct and indirect effects of the education on behavior. After PSM to adjust for the possible confounders to balance statistically two groups - with and without management education, there is statistically a significant difference in APB between these two groups, making a net difference of 18.60% (p < .05). The estimated 18.6 percentage point increase can be translated into the practice of APB by 670 students in the population. This number of academic planners can be attributed to a high recall of important management and planning education.</p> <p>Conclusions</p> <p>The study provided theoretical as well as practical implications to guide the design of the education and evaluation of teaching.</p
    corecore