bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and characterization of nanocristalline Fe-40 at.% Si alloy prepared by high energy ball milling
Authors: Faghi Lotfi , Triaa Salim , Siahmed Fatiha , Azzaz Mohamed 
Published: September 2013

AbstractFe60Si40(at.%) alloys were synthesised using a planetary ball mill. X-ray diffraction was used to identify and characterise various phases formed during the milling process. Mössbauer and electromagnetic methods were used to characterise the variations in structure and their influence on the local change of magnetic properties. The shape of hyperfine field distributions used to describe the Mössbauer spectra is discussed. It was found that after 4 h of milling, α-FeSi and Fe3Si starts to form. The coexistence of the α-FeSi phase and Fe3Si was found between 8 and 16 h. After 32 h of milling, the powder was completely transformed into the alloy phase (Fe3Si). The value of the mean particle size of our samples decreases with increasing milling time. It reaches the value of 0.42 μm after 56 h of milling. The crystallite size was reduced to 13 nm after milling. The coercitive fieldHCdecreases with increased milling time.
The effect of magnetron-deposited Al2O3 coating on the corrosion resistance of Ti–Al alloys in a 9 %O2 + 0.2 %HCl + 0.08 %SO2 + N2 atmosphere
Authors: Małecka Joanna 
Published: September 2013

Abstract
The effect of Al2O3 coating on oxidation and hot corrosion was investigated at 700 °C in an atmosphere of 9 %O2 + 0.2 %HCl + 0.08 %SO2 + N2. Isothermal oxidation testing indicated that the coating was very effective in reducing the oxidation rate of γ-TiAl. The technology of magnetron sputtering used in this study allowed the deposition of a coating that ensured the improvement of high temperature oxidation resistance without interference in mechanical properties of the alloy.
Occupations routières et agglomérations secondaires en Bretagne romaine
Authors: Willis Steven 
Published: September 2013

Die «Straßensiedlungen» sind eine bedeutende Gruppe unter den Fundstätten des römischen Großbritannien. Ihre Aufgaben in der Hierarchie der Siedlungsformen sind vielseitig. Sie sind kennzeichnend für die Lowlands, weitab von den Gebieten mit militärischer Präsenz, die sich an den Grenzen Britanniens erstreckten. Es ist möglich zwischen «Straßensiedlungen» und «Ortschaften» zu unterscheiden, nichtsdestoweniger hatten diese Stätten mehrere Eigenschaften und Funktionen gemein. Künftig müssen die Studien der «smaller centers» die Topographie, die Beziehung zur Hydrographie, die kulturelle Identität und die Herkunft der Bevölkerungsgruppen berücksichtigen, die vielleicht aus dem Hinterland hierher kamen. Aus diesem Grund und um die ländlichen Konsumgewohnheiten zu bestimmen, haben sich die Studien ebenfalls auf die Analyse der Fundvergesellschaftung zu stützen. Diese Hinweise auf die Konsumtendenzen zeigen die Notwendigkeit vergleichende Studien systematischer durchzuführen. Diese Studien können sich glücklicherweise auf die Ausgrabungen ergänzende Prospektionsprogramme stützen, es ist zu erwarten, dass sie Analysen und Publikationen begünstigen. Die politische und wirtschaftliche Integration dieser Stätten in ein strukturiertes Siedlungsnetz ist ebenfalls zu berücksichtigen, was ihrer Untersuchung erhebliche Bedeutung verleiht, wenn wir die Gesellschaft dieser
Zeit verstehen wollen.
Mercury Hygiene Practices followed in Dental Clinics in Pune: A Survey
Authors: Raghavendra Srinidhi Surya , Ranadive Nishita 
Published: September 2013

ABSTRACT

Introduction
Amalgam has proved to be among the most versatile and durable of all restorative materials. Mercury in various forms has been found to be toxic. Dental personnel can be exposed to mercury in myriad ways like direct skin contact or exposure to mercury vapors through spillage or during various steps of restoration. Proper storage and recycling of waste amalgam has been a challenge. Waste amalgam and spent capsules may be disposed of in the general office refuse and they later enter municipal dumps or incinerators.
Along with the need for amalgam recycling, the knowledge of the dentists about the deleterious effects, method of handling, effective storage and efficient disposal of amalgam scrap is vital. It was felt that the method used by the third party agency for disposing amalgam scrap should be mentioned.

Materials and methods
A confidential questionnaire was formed of close- and open-ended questions regarding the awareness of toxic effects of mercury, its handling and storage prior to disposal. This was distributed randomly to 100 private practitioners in Pune city, Maharashtra state, India. A response rate of 75% was obtained. The results were analyzed.

Results
All the dentists surveyed were aware of the toxic effects of mercury. Thirty-four percent were storing the scrap in the ADA-recommended method, 23% were replacing more than 5 to 10 amalgam restorations with esthetic alternatives per week, 32% used high volume evacuation while removing old fillings and 94% of them had evacuation into the common drain without any recapture systems.

Conclusion
We need to develop a comprehensive waste management plan for the disposal of amalgam scrap. Guidelines need to be established not only among the dentists but also with the waste disposal agency. This will go a long way in reducing the deleterious effects of mercury in the environment.

How to cite this article
Srinidhi SR, Ranadive N. Mercury Hygiene Practices followed in Dental Clinics in Pune: A Survey. World J Dent 2013;4(2):92-95.
Central Neurilemmoma of Mandible
Authors: Bagewadi Anjana , Keluskar Vaishali , Byakodi Raghavendra , Shetti Arvind 
Published: September 2013

ABSTRACT
Neurilemmomas involving bones are rare tumors constituting less than 1% of central benign tumors of bone. Only few cases of neurilemmomas occurring in the mandible have been reported in the medical literature so far. Here, we report a case of neurilemmoma involving the posterior aspect of mandible in a 15 years old male child. This case was a diagnostic challenge as the clinical features and radiographic features mimicked that of an odontogenic cyst but histologically turned out to be a neurilemmoma. Discussion on the incidence, clinical presentation, radiographic appearance, histopathological features and treatment of this benign neurogenic tumor is presented here.

How to cite this article
Byakodi R, Keluskar V, Bagewadi A, Shetti A. Central Neurilemmoma of Mandible. World J Dent 2013;4(2):134-137.
Outcome of Laparoscopic Ovarian Drilling in Patients of Clomiphene Resistant Polycystic Ovarian Syndrome in a Tertiary Care Center
Authors: Shashikala T , Kaur Mandeep , Pranesh Gautham , Gahlan Anjali , Deepika K 
Published: September 2013

ABSTRACTBackgroundPolycystic ovarian syndrome (PCOS) is the most common endocrine disorder in women and its prevalence is rising. Management of the disease is usually medical and some resistant cases may require surgical treatment in the form of laparoscopic ovarian drilling (LOD). Medical management exposes the patient to increased risk of multiple pregnancy and hyperstimulation. LOD avoids the need of medical therapy or makes the ovaries more responsive to treatment.AimThe objective of this descriptive study was to study the outcome of LOD in patients of PCOS with clomiphene resistance in the form of clinical pregnancy and live birth rate.SettingTertiary assisted conception center.DesignObservational study.Materials and methods100 patients of clomiphene resistant PCOS who underwent LOD.Outcome measurePrimary outcome was clinical pregnancy rate and secondary outcome was ovarian hyperstimulation syndrome (OHSS) rate, multiple pregnancy rate, miscarriage rate, prevalence of hypothyroidism and live birth rate in PCOS patients.ResultsClinical pregnancy rate—47.3%, OHSS rate—2.7%, multiple pregnancy rate—4%, miscarriage rate—6.7%, prevalence of hypothyroidism—48% and live birth rate—40.5%.ConclusionPatients with irregular cycles, high LH/FSH ratio usually have CC resistance. PCO patients have high prevalence of hypothyroidism and it should be specifically screened and treated. Low incidence of miscarriage rate, OHSS rate and multiple pregnancy rates is seen after LOD with 47.3% clinical pregnancy and 40.5% live birth rates. Patients with high values of LH/FSH ratio are the candidates who stay nonpregnant in spite of LOD and this information is very useful in prognosticating the patients.How to cite this articleKaur M, Pranesh G, Mittal M, Gahlan A, Deepika K, Shashikala T, Rao KA. Outcome of Laparoscopic Ovarian Drilling in Patients of Clomiphene Resistant Polycystic Ovarian Syndrome in a Tertiary Care Center. Int J Infertility Fetal Med 2013;4(2):39-44.
In vitro Evaluation of the Minimum Bactericidal Concentrations of Different Root-End Filling Materials
Authors: Koçak Mustafa Murat , Oktay Elif Aybala , Kiliç Abdullah , Yaman Sis Darendeliler 
Published: September 2013

ABSTRACT

Aim
The aim of this study was to evaluate the minimum bactericidal concentrations (MBC) of root-end filling materials ProRoot MTA, MTA Angelus and IRM.

Materials and methods
Macrodilution broth method was used. Microorganisms used were: Staphylococcus aureus (ATCC 29213), Enterococcus faecalis (ATCC 29212) and Streptococcus mutans. Serial two-fold dilutions of root-end filling samples were prepared in macrodilution tubes with concentrations ranging from 1/2 to 1/512. The samples dilutions were incubated for 24 hours. After incubation, 0.1 ml of diluted culture was inoculated onto the surface of supplemented sheep blood agar (Merck, Germany) and all plates were incubated at 37°C in aerobic condition for 24 hours. The MBC was defined as the lowest concentration of root-end filling samples where no growth was recorded.

Results
MBC of both mineral trioxide aggregate (MTA) products against S. aureus were recorded as 15.62 mg/ml and for IRM 31.25 mg/ml MBC for both MTA groups against E. faecalis were recorded as 31.25 mg/ml and for IRM 62.5 mg/ml. MBC of all root-end filling samples against S. mutans were recorded as 62.5 mg/ml.

Conclusion
All tested root-end filling materials showed acceptable MBC against S. aureus and E. faecalis.

Clinical significance
All tested materials can be used safely for filling of a root-end cavity.

How to cite this article
Koçak MM, Koçak S, Oktay EA, Kiliç A, Yaman SD. In vitro Evaluation of the Minimum Bactericidal Concentrations of Different Root-End Filling Materials. J Contemp Dent Pract 2013;14(3):371-374.
Comparison of Antibacterial Activity of Glass-ionomer Cement and Amalgam in Class Two Restorations by Streptococcus mutans Count Analysis at Fixed Intervals: An in vivo Study
Authors: Tegginmani Veeresh S , Goel Beenarani , Uppin Virendra , Kumar LS Vijay , Nainani Abhinav 
Published: September 2013

ABSTRACT

Aim
The purpose of the present study was to determine the influence of glass ionomer cement and amalgam restoration on the level of Streptococcus mutans in the interproximal plaque at periodic intervals and also to compare these values.

Materials and methods
Seventeen adult patients having two proximal carious lesions on any quadrant of the jaw (either opposing or contralateral) were selected for this study. Carious lesions were diagnosed clinically and from bitewing radiographs. Of the two carious lesions, one was restored with glass ionomer cermet cement and another with amalgam. Plaque samples were collected from interproximal areas before and at 1 month and 3 months post-treatment in a test tube containing 5 ml of modified Stuart's liquid transport fluid. Identification of organisms in the colony was done after Gram staining.

Results
Comparison of values before restoration and after restoration at 1 month interval showed a statistically significant decrease (p < 0.001). Similarly, comparison of values before and after restorations at 3 months also showed statistically significant decrease (p < 0.02). But comparison of restorations of 1 and 3 months intervals showed no statistical significant difference (p > 0.05).

Conclusion
Glass ionomer restorations have definite advantage over the amalgam, as the tunnel preparation is more conservative and fluoride release from the glass ionomer inhibits the growth of S. mutans in the plaque.

Clinical significance
Glass ionomer cement should be preferred over amalgam in conservatively prepared restorations as it reduces the microbial activities due to fluoride release.

How to cite this article
Tegginmani VS, Goel B, Uppin V, Horatti P, Kumar LSV, Nainani A. Comparison of Antibacterial Activity of Glass-ionomer Cement and Amalgam in Class Two Restorations by Streptococcus mutans Count Analysis at Fixed Intervals: An in vivo Study. J Contemp Dent Pract 2013;14(3):381-386.
Potential Effect of Neutrophil Functional Disorders on Pathogenesis of Aggressive Periodontitis
Authors: Tapashetti Roopali P , Sharma Sumit , Guvva Sowjanaya 
Published: September 2013

ABSTRACTIntroductionLeukocytes play a key role in maintaining the balance between an effective host defence response to microorganisms and periodontal tissue destruction. Neutrophil dysfunction has been associated with increased susceptibility to periodontal diseases. We undertook this study to determine to what extent neutrophil dysfunction constitutes to the pathogenesis of aggressive periodontitis (AgP) in tropical country like ours.Materials and methodsAge- and sex-matched groups consisting of 20 subjects each of generalized aggressive periodontitis (GAP)–cases and nonperiodontitis (NP)–controls. diabetes mellitus, HIV infection, prolonged antibiotic use and smoking were excluded.Each neutrophil function was assessed using the chemotactic assay using case in, phagocytosis assay, candidacidal assay (for intracellular killing) and NBT assay (for respiratory burst failure).Statistical analysis usedStudent's t-test, Fisher's exact test and Chi-square test.ResultsIn the study 17 out of 20 subjects (85%) had at least one abnormal neutrophil assay either hypofunctional or hyperfunctional of which 16 (80%) had hypofunctional assays and 8 (40%) had hyperfunctional assays. Defective phagocytosis was the commonest (50%) followed by chemotactic defect (45%), defective respiratory burst (40%) and defective intracellular killing (30%). Mean of chemotaxis assay was significantly less in AgP when compared to controls (103 vs 129 £gm, p = 0.002), similarly for phagocytic defect (3.45 vs 4.65, p „T 0.001) and with candidacidal assay (26.80 vs 37.35, p < 0.001).ConclusionThe prevalence of neutrophil dysfunction, predominantly hypofunctional, was significantly very high in GAP patients with few even having hyperactive respiratory burst function. Multiple level neutrophil defects could account for the aggressive nature of AgP even in apparently healthy subjects.How to cite this articleTapashetti RP, Sharma S, Patil SR, Guvva S. Potential Effect of Neutrophil Functional Disorders on Pathogenesis of Aggressive Periodontitis. J Contemp Dent Pract 2013;14(3):387-393.
Comparison of Rate of Canine Retraction into Recent Extraction Site with and without Gingival Fiberotomy: A Clinical Study
Authors: Kalra Amit , Jaggi Nitin , Bansal Manu , Goel Sumant , Medsinge Sonali V , Abraham Reji , Jasoria Gaurav 
Published: September 2013

ABSTRACT

Aim
Retraction of maxillary canines after first premolar extractions is a very common orthodontic task in cases of crowding or for the correction of large overjet. Many studies have been done to increase the rate of retraction. The aim is to compare the rate of canine retraction into recent extraction site with and without circumferential supracrestal fiberotomy.

Materials and methods
The rate of movement of the canines into the recent extraction site of the first premolar with or without circumferential supracrestal fiberotomy was measured in 14 patients aged 13 to 22 years. The study was done on 9 maxillary and 5 mandibular arches. The appliance used in the present study was the preadjusted edgewise (0.022 inch Roth prescription) and retraction performed by frictionless mechanics using Composite T Loop. The distalization of canines was measured at regular intervals (T1, T2, T3 and T4). Recordings of the positions of the canines at the beginning and at different intervals were made from dental casts.

Results
The mean difference between the two sides for the total time span T1-T4, for maxillary arch was 0.36 mm and for mandibular arch was 0.60 mm respectively.

Conclusion
There can be various factors that affect the rate of tooth movement. Factors like bone density, bone metabolism, and turnover in the periodontal ligament, amount of force applied may be responsible for the variation.

Clinical significance
No clinically significant increased rate of retraction of cuspids in the recent extraction site with fiberotomy was found in comparison to the retraction in recent extraction site without fiberotomy.

How to cite this article
Kalra A, Jaggi N, Bansal M, Goel S, Medsinge SV, Abraham R, Jasoria G. Comparison of Rate of Canine Retraction into Recent Extraction Site with and without Gingival Fiberotomy: A Clinical Study. J Contemp Dent Pract 2013;14(3):419-426.
Prevalence of Tobacco Habits and Attitude toward Its Cessation among Outpatients of Mahatma Gandhi Mission's Dental College and Hospital, Navi Mumbai, Maharashtra
Authors: Hussain Juveria Syed Ali 
Published: September 2013

ABSTRACT

Background
Information regarding the tobacco habits in patients visiting Mahatma Gandhi Mission's (MGM) Dental College and Hospital is scarce. Therefore, development and better implementation of the tobacco cessation initiatives can be undertaken with the knowledge of the tobacco use among patients.

Materials and Methods
A cross-sectional, questionnairebased study was conducted among the outpatients of MGM Dental College and Hospital from July to September, 2012. Questions regarding the form of tobacco used, frequency, duration and attitude toward stopping its consumption were asked. Statistical analysis was carried out using descriptive statistics and chi-square tests using Statistical Software package (SPSS) version 17.

Results
314/505 (62.1%) of the patients reported of tobacco use. Majority 162/314 (51.6%) of the patients used smokeless tobacco in which mishri and gutkha were mostly consumed. Work pressure was the common 100/314 (31.8%) cause of tobacco use. More than half the patients had tried to quit the habit and showed awareness toward its adverse effects on oral and general health.

Conclusion
Tobacco use has become an important concern due to its growing addiction among all age groups and gender. It is imperative to understand the psychosocial ideology and pattern of tobacco use among the patients in order to effectively counsel and motivate them to stop the habit.

How to cite this article
Hussain JSA, Ram SM. Prevalence of Tobacco Habits and Attitude toward Its Cessation among Outpatients of Mahatma Gandhi Mission's Dental College and Hospital, Navi Mumbai, Maharashtra. J Contemp Dent 2013; 3(2):57-60.
Oral Cancer: The Dentist's Intervention
Authors: Dekate Kamlesh , Kumar Shwetha , Haque Nasreen 
Published: September 2013

ABSTRACTPrevention and early detection are fundamental tools in the control of the oral cancer. Until recently screening and early detection of oral cancer has been dependent on a complete visual examination. Since simple examination is subject to observer variability adjunctive screening aids have been introduced to aid in early detection of oral cancer. The present paper outlines a brief overview of techniques in improving the identification of potentially malignant changes of the oral mucosa. We conclude that further research with clear objectives is strongly required to optimize and validate these oral screening procedures.How to cite this articleKumar S, Dekate K, Patel S, Haque N. Oral Cancer: The Dentist's Intervention. J Contemp Dent 2013; 3(2):74-77.
Infection Control Policy for Dental Practice: An Evidence-based Approach
Authors: Jawdekar Ashwin Muralidhar 
Published: September 2013

ABSTRACT
Having a policy on infection control based on current evidence and guidelines is essential for all dental practices. The evidence shows that all the members of the dental team may not possess adequate knowledge of all relevant aspects related to infection control, such as the transmission of infectious diseases, current regulations, etc. Moreover, there exists evidence to support the value of education and certified training the dental professionals in improving their understanding of infection control policies and procedures. The training must be provided by an expert team comprising of an academician with suitable clinical experience and demonstrable expertize in dentistry, and a microbiologist who understands the needs of dental settings. Evidence suggests that a training over 10 hours is associated with maximal benefits; and the CDC and BDA guidelines recommend training to all dental staff (clinical as well as nonclinical) for optimal benefits. Successful implementation of the infection control policies depends on the adequate provision of time and facilities for the same.

How to cite this article
Jawdekar AM. Infection Control Policy for Dental Practice: An Evidence-based Approach. J Contemp Dent 2013;3(2):82-86.
Reinstating Buccally Flared Molars using a Modified Transpalatal Arch
Authors: Sonawane Manish Suresh , Karandikar Girish Ramchandra , Pawar Priyanka Anil , Shah Shaili Sanjay 
Published: September 2013

ABSTRACTCountless efforts have been made to correct scissors bite, intermaxillary cross elastics being the most conventional one. These generate extrusive forces on both upper and lower molars, thus opening the bite with consequent clockwise rotation of the mandible. Also, treatment results depend largely on patient cooperation.Of late, microimplants have gained tremendous popularity in the treatment of such malocclusions because of their reliability and predictability. But, it carries surgical risks, requires more clinical time and cost.The critical procedures for scissors bite correction are intruding and palatally tipping the involved tooth when it is both extruded and buccally flared. We have designed a modified transpalatal arch (M-TPA) to achieve both with minimal side effects. Advantages are quick and easy chairside fabrication and adjustment, no patient compliance required, no complicated laboratory procedure involved and is cost-effective. Moreover, the arms can be oriented distal or mesial to the M-TPA depending on the involved teeth.How to cite this articleSonawane MS, Karandikar GR, Pawar PA, Shah SS. Reinstating Buccally Flared Molars using a Modified Transpalatal Arch. J Contemp Dent 2013;3(2):98-101.
Minimally Invasive Approach to Restore Anterior Spaces with Porcelain Laminate Veneers
Authors: Mhaske Prasad Nanasaheb , Nadgere Jyoti B 
Published: September 2013

ABSTRACTRestoring anterior teeth is a big challenge for dentists today because of the esthetic concerns and also the patient's expectation for a natural looking smile. An unpleasant smile traumatizes the patient psychologically as it decreases their confidence and is a cause for social embarrassment. This case describes a patient who reported with a complaint of open spaces in maxillary anterior teeth, desiring enhancement of esthetics and was treated successfully with porcelain laminate veneers. Very minimal tooth preparation was carried out on the labial aspect of the maxillary incisors and canines, keeping in mind the minimally invasive approach. Veneers were fabricated using lithium disilicate ceramics and were bonded to the tooth surface using adhesive resin cement.How to cite this articleMhaske PN, Ram SM, Shah N, Nadgere JB. Minimally Invasive Approach to Restore Anterior Spaces with Porcelain Laminate Veneers. J Contemp Dent 2013;3(2):108-111.