bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of Dimensional Accuracy of Four Different Die Materials before and after Disinfection of the Impression: An in vitro Study
Authors: Nandini Yamini , Vinitha KB , Smitha M 
Published: November 2013

ABSTRACT

Background
This study was conducted to compare the linear dimensional accuracy of die materials before and after disinfection of the impression. Type IV and V conventional dental stone, type IV-resin impregnated and copper-plated die materials were studied.

Materials and methods
A stainless-steel master die analogs to a complete veneer crown preparation with three scribed lines (I: vertical, II and III: horizontal) was machined and measurements were made from these scribed reference lines. Impressions were made with monophase addition silicone impression material for each of the specimens. 2% glutaraldehyde was used as a disinfectant. The fabricated dies were measured to the nearest 0.0001 mm. ANOVA and post hoc was carried out using Scheffe multiple comparison test at significance level of 0.05.

Results
Type IV resin-impregnated dental stone and copperplated dies approximated the dimensions of the master die. Type IV and V conventional dental stone dies showed greater variation in measurements. Statistically significant differences were observed for type IV resin-impregnated and copper-plated dies in dimension I and III. For dimension II no significant differences were found for dies fabricated from four die materials. A one-way analysis of variance indicated no statistical significant differences among the two groups of dies fabricated from disinfectant treated impressions and those fabricated from nondisinfectant treated impressions.

Conclusion
Type IV resin-impregnated dental stone and copper-plated dies are dimensionally more accurate than type IV and V conventional dental stone die materials. No significant linear distortion in the dies fabricated from the disinfected impressions was observed.

How to cite this article
Nandini Y, Vinitha KB, Manvi S, Smitha M. Comparison of Dimensional Accuracy of Four Different Die Materials before and after Disinfection of the Impression: An in vitro Study. J Contemp Dent Pract 2013;14(4):668-674.
Effects of Commonly Consumed Beverages on Surface Roughness and Color Stability of the Nano, Microhybrid and Hybrid Composite Resins: An in vitro Study
Authors: Reddy P Sarveshwar , Tejaswi KL Sunil , Shetty Suneeth , Annapoorna BM , Pujari Sudarshan C , Thippeswamy HM 
Published: November 2013

ABSTRACTBackgroundConsumption of certain beverages may affect the esthetic and physical properties of the resin composite, thereby undermining the quality of restorations.AimTo analyze the effect of three beverages (cola, coffee, tea) on color stability and surface roughness of three different types of resin composites at various time intervalsin vitro.Materials and methodsNano, microhybrid and hybrid resin composites were used. Each material was randomly divided into four equal subgroups of 10 samples each according to the beverages used (cola, coffee, tea, distilled water). The samples were immersed in each beverage for 1, 15 and 30 days. Surface roughness and color changes measurements were noted at the baseline—the first, fifteenth and thirteenth day.ResultsIt was found that nanoresin composite followed by microhybrid and hybrid showed least surface roughness and color change. The Coke beverage subgroup showed more surface roughness and the subgroup coffee has shown more color changes with respect to other subgroups.ConclusionAll specimens showed discoloration after completion of the test period which was visually perceptible and clinically unacceptable.At the end of 30th day, among the materials, nanofilled composite resin showed comparatively less surface roughness and color change than microhybrid and hybrid composite resins.How to cite this articleReddy PS, Tejaswi KLS, Shetty S, Annapoorna BM, Pujari SC, Thippeswamy HM. Effects of Commonly Consumed Beverages on Surface Roughness and Color Stability of the Nano, Microhybrid and Hybrid Composite Resins: Anin vitroStudy. J Contemp Dent Pract 2013;14(4): 718-723.
Long-Term Evaluation of Clinical Performance of Directbonded Brackets: An Epidemiologic Survey
Authors: Atashi Mohamad Hossein Ahangar 
Published: November 2013

ABSTRACT

Aim
The objective of the current epidemiologic study was to investigate characteristics associated with bracket failure in bonded brackets.

Materials and methods
A retrospective study on data of 144 patients treated during 2009 to 2012 was done. Baseline data including age, gender, malocclusion, bite type and debonding incidences per teeth were retrieved. ANOVA analysis and t-test were used to evaluate the data.

Results
Second premolar teeth had significantly higher debonding incidences. Patients’ age was negatively correlated with debonding incidences. No difference was observed for various types of malocclusion (class I, II and III), arch side (right or left) or arch location (upper or lower). However, deep bite patients had significantly higher failure incidents.

Conclusion
For a total of 144 patients with 2,524 bonded brackets, the overall failure rate was 7.8%. Deep bite was the only factor that was associated with higher bracket failure. The bracket failure incidents tend to decrease as patients age increase.

Clinical significance
Deep bite patients and also second premolar teeth seem to be especially prone to debonding incidents. Care must be taken to avoid premature contacts in deep bite patients. Also strict adherence to moisture control protocols when bonding second premolar teeth is recommended since these teeth are at increased risk for debonding.

How to cite this article
Atashi MHA, Shahamfar M. Long-Term Evaluation of Clinical Performance of Direct-bonded Brackets: An Epidemiologic Survey. J Contemp Dent Pract 2013;14(4): 738-742.
Endoscopic Retrieval of Dental Implant from Maxillary Sinus
Authors: Satwalekar Parth , Reddy B Anantha , Chander K Subash , Reddy G Ramaswamy , Agarwal Taruna , Chowdary Sheeba Glory 
Published: November 2013

ABSTRACT

Aim
Minimally invasive method for retrieving displaced objects like implants from the maxillary antrum with minimal complications.

Background
Minimal invasive endoscopic surgery has been developed for various indications in the craniomaxillofacial area.

Case description
In this article, a technique for endoscopic removal of a dental implant displaced into the maxillary sinus is presented. Access to the implant was achieved transorally via the canine fossa. The endoscopic surgical approach described was reliable and minimally invasive for removing dental materials displaced into the maxillary sinus.

Conclusion
Transantral endoscopic surgery is a reliable, minimally invasive method for retrieving displaced objects from the maxillary antrum with minimal complications.

How to cite this article
Satwalekar P, Reddy BA, Chander KS, Reddy GR, Agarwal T, Chowdary SG. Endoscopic Retrieval of Dental Implant from Maxillary Sinus. J Contemp Dent Pract 2013;14(4):759-761.
Going Green with Eco-friendly Dentist
Authors: Avinash Bhagyalakshmi , Shivalinga BM , Jyothikiran S , Padmini MN 
Published: November 2013

ABSTRACTEco-friendly dentistry is currently transforming the medical and dental field to decrease its affect on our natural environment and reduce the amount of waste being produced. Eco-friendly dentistry uses a sustainable approach to encourage dentists to implement new strategies to try and reduce the energy being consumed and the large amount of waste being produced by the industry. Many reasonable, practical and easy alternatives do exist which would reduce the environmental footprint of a dental office were it to follow the ‘green’ recommendations. Dentist should take a leading role in the society by implementing ‘green’ initiatives to lessen their impact on the environmentThis article provides a series of ‘green’ recommendations that dentists around the world can implement to become a leading Stewards of the environment.How to cite this articleAvinash B, Avinash BS, Shivalinga BM, Jyothikiran S, Padmini MN. Going Green with Eco-friendly Dentistry. J Contemp Dent Pract 2013;14(4):766-769.
Delineation of Water Logging and Salinity for Salvaging Built Environment
Authors: Rao Atif  , Mohammed Raza Mehdi  , Sheeba Afsar  
Published: November 2013

Millions of acres of splendidly productive land and valuable infrastructure are deteriorated continuously. The reason for such deterioration in majority of areas is mainly due to water logging and salinity. Rise of water table level and the dearth of drainage and lack of continuous monitoring and timely remedial measures, extended the circle of devastation to historical heritage and precious archeological sites as well.
Mohenjo-Daro has been selected for this study, it has global significance but due to water logging and salinity, it is in danger of total destruction. The archeological buildings and other infrastructure and land in its environs are being gradually eroded by the capillary rise of saline ground the intensity of which constitutes a serious threat.
For delineating and periodic monitoring of the salinity and waterlogging and to effectively implement the appropriate remedies, use of the latest technologies is essential. In this study the remote sensing technologies are used to address this issue with the help of Soil investigation parameters mainly EC and pH.
The aftermaths of this study would provide a methodological framework along with practical application in delineation saline areas using satellite technology. The final value-added products of this research would be useful for all interested stakeholders including conservationists, environmentalists, archeologists, planners and decision-makers at various levels. The international community at large would be the beneficiary of this study since Mohenjo-Daro is the heritage of entire mankind.
Assessing Systematic Bias in Museum Collections
Authors: Huster Angela C. 
Published: November 2013

AbstractArchaeologists often overlook museum collections for research purposes due to concerns about the representativeness of the artifacts in the collection. Such concerns can be addressed by comparing non-scientifically produced collections to collections of known standing, such as those from more modern projects, using the same exploratory data analysis and basic statistical methods that archaeologists use to compare sets of artifacts in other situations. As a case study, this article compares spindle whorls recovered during the 2007 excavations at the Aztec site of Calixtlahuaca with two museum collections of whorls attributed to the site. A variety of metric and non-metric traits were recorded for each item in the three collections and were compared using Kolmogrov-Smirnov, Chi-square, and Fisher's exact tests. Both museum collections show a bias toward more elaborately decorated pieces, but with varying side effects on other attributes of analytical interest.
La prostitution en situation de rue
Authors: Provencher Marie-Andrée , Côté Philippe-Benoit , Blais Martin , Manseau Hélène 
Published: November 2013

Cette étude vise à décrire l’articulation entre les trajectoires d’entrée et de sortie de la prostitution chez les jeunes femmes en situation de rue, ainsi qu’à comparer les représentations de cette pratique entre les jeunes femmes qui y ont déjà eu recours et celles qui n’y ont jamais eu recours. Seize jeunes femmes en situation de rue, âgées de 18 à 25 ans, ont été rencontrées en entrevue individuelle semi-dirigée. En s’appuyant sur une méthodologie qualitative, deux groupes de jeunes femmes ont été comparés : l’un ayant eu recours à la prostitution (9/16) et l’autre n’y ayant jamais eu recours (7/16). Leurs témoignages mettent en relief le rôle cardinal de la précarité de la situation de rue et la nécessité de subvenir à des besoins jugés pressants. Cette précarité donne prise à l’influence d’autrui dans l’évolution de leurs représentations, rendant plus acceptable le recours à la prostitution aux yeux des jeunes femmes.
A novel distillation design for vapor phase dimethyl ether production process
Authors: Tavan Yadollah , Khosravi Nikou Mohammad Reza 
Published: November 2013

ABSTRACTThe vapor phase dimethyl ether (DME) synthesis is simulated by hysys process simulation software, and relevant cost analysis is also conducted. Based on cost estimation results, it is found that capital investment of the classic DME process is greatly influenced by the distillation towers and operating costs. Accordingly, to solve these problems, an innovative DME process based on a thermally coupled distillation sequence in vapor phase is proposed in this work. The results clearly demonstrated that the novel proposed process leads to 47.9% and 39.7% reductions in operating and capital costs as compared with the conventional DME process, respectively. © 2013 Curtin University of Technology and John Wiley & Sons, Ltd.
Synthesis and characterization of Y(1‐x)Eu(x)(TTA)3(Phen) organic luminescent thin films
Authors: Kalyani N. Thejo , Atram R. G. , Dhoble S. J. 
Published: November 2013

ABSTRACTYttrium is stoichiometrically doped into europium by mole percentage, during the synthesis of Y(1‐x)Eu(x)(TTA)3(Phen), using solution techniques (where x = 0.2, 0.4, 0.5, 0.6 and 0.8, TTA = thenoyltrifluoroacetone and Phen = 1,10‐phenanthroline).These complexes were characterized using different techniques such as X‐ray diffraction, thermogravimetric/differential thermal analysis, optical absorption and emission spectra. Thin films of the doped Eu–Y complexes were prepared on a glass substrate under a high vacuum of 10‐6 Torr. The photoluminescence spectra of these thin films were recorded by exciting the sample at a wavelength of 360 nm. The emission peak for all the synthesized complexes centered at 611 nm; maximum emission intensity was obtained from Y0.6Eu0.4 (TTA)3(Phen). The results proved that these doped complexes are more economical than pure Eu(TTA)3(Phen) and are best suited as red emissive material for energy‐efficient and eco‐friendly organic light‐emitting diodes and displays. Copyright © 2013 John Wiley & Sons, Ltd.
Pharmacokinetics and oral bioavailability of epimedin C after oral administration of epimedin C and Herba Epimedii extract in rats
Authors: Lee Chia‐Jung , Wu Yu‐Tse , Hsueh Thomas Y. , Lin Lie‐Chwen , Tsai Tung‐Hu 
Published: November 2013

ABSTRACTEpimedin C, an ingredient of Herba Epimedii, has potential for treatment of cardiovascular disease and bone loss. However, there is still no sensitive analytical method to monitor epimedin C in biological samples. The goal of this study was to develop a sensitive and reliable method based on a LC‐MS/MS for evaluating the pharmacokinetics of epimedin C after administration of Herba Epimedii in rat. Electrospray ionization in positive‐ion mode and multiple reaction monitoring were used to identify and quantitate active components. Analytes were separated by a reverse‐phase C18 column. Liquid–liquid extraction using ethyl acetate, evaporation and reconstitution was used to plasma sample preparation. Mass transition of precursor ion → product ion pairs were monitored at m/z 823.4 → 313.1 for epimedin C and m/z 237.1 → 178.9 for carbamazepine (internal standard). A calibration curve gave good linearity (r > 0.999) over the concentration range 2.5–500 ng/mL. Pharmacokinetic data demonstrated that there was rapid distribution and slow elimination after epimedin C administration (1 mg/kg, i.v.). Oral bioavailabilities of epimedin C in the pure compound and in the Herba Epimedii were around 0.58% and 0.13%, respectively. The result suggests that other herbal ingredients of Herba Epimedii may suppress the oral bioavailability of epimedin C. Copyright © 2013 John Wiley & Sons, Ltd.
Vortex‐assisted liquid–liquid micro‐extraction and high‐performance liquid chromatography for a higher sensitivity methyl methacrylate determination in biological matrices
Authors: Sousa Tiago F. A. , Aniceto Marta C. , Amorim Célia G. , Souto‐Lopes Mariana , Pérez‐Mongiovi Daniel , Montenegro Maria C. B. S. M. , Araújo Alberto N. 
Published: November 2013

ABSTRACTA vortex‐assisted liquid–liquid micro‐extraction coupled with high‐performance liquid chromatography, with UV–vis, is proposed to pre‐concentrate methyl methacrylate and to improve separation in biological matrices. The use of 1‐octanol as extracting phase, its volume, the need for a dispersant agent, the agitation conditions and the cooling time before phase separation were evaluated. In optimum conditions, enrichment factors of 20 (±0.5) and enrichment recovery of 99% were obtained. The straightforward association of this extraction process with the HPLC method, previously regulated by the International Organization for Standardization, afforded a detection limit of 122 ng/mL and a quantification limit of 370 ng/mL. The within‐batch precision, relative standard deviation, was 3% for a sample with 1.49 µg/mL and 4% for a sample with 13.4 µg/mL. The results showed a between batch‐precision of 21% for experiments performed on five different days, for a sample with a concentration of 1.10 µg/mL in methyl methacrylate. Copyright © 2013 John Wiley & Sons, Ltd.
Longitudinal HCR‐20 scores in a high‐secure psychiatric hospital
Authors: Morrissey Catrin , Beeley Chris , Milton John 
Published: November 2013

ABSTRACTBackgroundThe HCR‐20 is a widely used 20 item structured professional judgement aid to risk assessment and management, but longitudinal studies of its value are rare, particularly with people at high risk of reoffending.AimsTo investigate whether the HCR‐20 discriminates between patient subgroups in one high‐security hospital in England, whether scores reduce with hospital treatment and whether lower scores predict discharge.MethodsRepeated HCR‐20 ratings were made by clinical teams across five services within the hospital, two of them (women and men with intellectual disability) national services. A database of 3337 HCR‐20 ratings, from 532 patients over a period of 5 years, was examined using mixed effects models.ResultsAs expected, HCR‐20 scores were high overall, but there were differences between services in the ratings obtained. Female patients and men with intellectual disability had the highest total score. There was a significant relationship between discharge and lower clinical risk score, but not between total and risk scale scores and discharge. There were significant changes in scores over time, although these were small and may not be clinically meaningful. Differences between services were observed, with women evidencing greater change.ConclusionsIt is unsurprising that patients in two national services (for men with intellectual disability and women) have the highest HCR‐20 scores; however, the finding of relatively greater risk reduction in women needs further investigation. Although we did not find ceiling effects in this sample, the clinical value of frequently repeated HCR‐20 ratings may be limited for high‐risk populations where any change is likely to be slow. Copyright © 2013 John Wiley & Sons, Ltd.
Impact of myocardial supply area on the transstenotic hemodynamics as determined by fractional flow reserve
Authors: Shiono Yasutsugu , Kubo Takashi , Tanaka Atsushi , Kitabata Hironori , Ino Yasushi , Tanimoto Takashi , Wada Teruaki , Ota Shingo , Ozaki Yuichi , Orii Makoto , Shimamura Kunihiro , Ishibashi Kohei , Yamano Takashi , Yamaguchi Tomoyuki , Hirata Kumiko , Imanishi Toshio , Akasaka Takashi 
Published: November 2013

ObjectivesThe aim of this study was to investigate the impact of myocardial area supplied by the coronary artery on fractional flow reserve (FFR).BackgroundVarious factors other than the degree of epicardial stenosis influence the physiological significance of a coronary artery stenosis.MethodsA total of 296 coronary lesions in 217 patients were analyzed by quantitative coronary angiography and FFR. Myocardial area supplied by the coronary artery distal to the stenosis was evaluated by angiography using a modified version of the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease (APPROACH) score.ResultsPercent diameter stenosis of the coronary lesion was 57 ± 15% (mean ± standard deviation). FFR <0.80 was seen in 132 (45%) lesions. FFR was significantly correlated with minimum lumen diameter (r = 0.584, P <0.001), percent diameter stenosis (r = −0.565, P <0.001), lesion length (r = −0.306, P <0.001), and myocardial supply area (r = −0.504, P <0.001). Multivariate logistic analysis demonstrated that minimum lumen diameter (odds ratio [OR] = 0.031, 95% confidence interval [CI] = 0.013–0.076, P < 0.001), lesion length (OR = 1.038, 95% CI = 1.009–1.069, P = 0.001), and myocardial supply area (OR = 1.113, 95% CI = 1.079–1.147, P <0.001) were independent determinants for FFR <0.80.ConclusionsFFR, which is the index of physiological significance of coronary artery stenosis, is influenced by myocardial supply area distal to the stenosis as well as by its own minimal lumen diameter and lesion length. © 2013 Wiley Periodicals, Inc.
Acute gastritis‐induced Takotsubo's cardiomyopathy
Authors: Villablanca Pedro A. , Sukhal Shashvat , Ansari Asimul , Mohammed Dergham 
Published: November 2013

Key Clinical MessageA 50‐year‐old lady presented with epigastralgia, electrocardiogram (ECG) showed T‐wave inversions and the echocardiogram low ejection fraction (EF) with apical ballooning. An esophagogastroduodenoscopy (EGD) revealed gastritis. She recovered with proton pump inhibitors treatment. This is the first case that describes gastritis‐induced stress cardiomyopathy. Clinicians should be aware of Takotsubo's cardiomyopathy (TCM) as a possible complication of gastritis.
A computer vision approach to rare cell in vivo fluorescence flow cytometry
Authors: Markovic Stacey , Li Binlong , Pera Vivian , Sznaier Mario , Camps Octavia , Niedre Mark 
Published: November 2013

AbstractNoninvasive enumeration of rare circulating cell populations in small animals is of great importance in many areas of biomedical research. In this work, we describe a macroscopic fluorescence imaging system and automated computer vision algorithm that allows in vivo detection, enumeration and tracking of circulating fluorescently‐labeled cells from multiple large blood vessels in the ear of a mouse. This imaging system uses a 660 nm laser and a high sensitivity electron‐multiplied charge coupled device camera (EMCCD) to acquire fluorescence image sequences from relatively large (∼5 × 5 mm2) imaging areas. The primary technical challenge was developing an automated method for identifying and tracking rare cell events in image sequences with substantial autofluorescence and noise content. To achieve this, we developed a two‐step image analysis algorithm that first identified cell candidates in individual frames, and then merged cell candidates into tracks by dynamic analysis of image sequences. The second step was critical since it allowed rejection of >97% of false positive cell counts. Overall, our computer vision IVFC (CV‐IVFC) approach allows single‐cell detection sensitivity at estimated concentrations of 20 cells/mL of peripheral blood. In addition to simple enumeration, the technique recovers the cell's trajectory, which in the future could be used to automatically identify, for example, in vivo homing and docking events. © 2013 International Society for Advancement of Cytometry