cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14287901.v1
title: Different bonding agents effect on adhesive bond strength: lithium disilicate glass ceramic

description: Abstract Introduction The silanization of the ceramic surface prior to applying the adhesive and/or resinous materials plays an important role in bond strength. Nowadays, a new family of adhesive systems has been introduced into the market, aiming to simplify the technique of adhesive procedures during cementation. Objective To investigate the effectiveness of different bonding agents containing silane and primer on Lithium Disilicate Glass Ceramic (LD) surface by shear bond strength tests. Material and method 130 LD ceramic blocks were included in acrylic resin, polished and washed in ultrasound for 10 minutes. The specimens were divided into 2 groups according to surface treatment: Polished Surface (PS); Hydrofluoric Acid 9.5% - 20s (HF). Each group was divided into 5 subgroups (n = 13) according to bonding agent type: metallic primer containing MDP (ZPrimePlus, Bisco Inc); two traditional silanes (MonobondPlus, IvoclarVivadent / Porcelain Prime, Bisco Inc.); mixture of silane and resin (Kerr Silane, Kerr); mixture of silane and universal adhesive (Single-bond Universal, 3M Espe). The specimens were mounted in a standard device for shear testing (UltradentBonding Assembly), cemented with dual resin cement (RelyX UltimateTM, 3M Espe.) and photo-polymerized for 20s. The samples were tested after 24 hours and 3 months of storage in distilled water at ±36 °C. The data were analyzed by 3-Way Anova and Tukey's test (α = 5%). Result Shear bond strength (SBS) was significantly influenced by surface treatment, bonding agent used and storage (p &lt;0.001). Conclusion Adequate adhesive bond strength to Lithium Disilicate Glass Ceramic can be obtained with traditional silanes, combined with HF acid pretreatment surface.
DOI: 10.6084/m9.figshare.14287898.v1
title: Effect of tooth enamel staining by coffee consumption during at-home tooth bleaching with carbamide peroxide

description: Abstract Introduction Obtaining the result expected during tooth bleaching requires a correct diagnosis of the type of staining presented. The causes of tooth staining differ depending on the etiological factor. Objective To assess the color change caused by the immersion of bovine teeth in coffee solution during at-home tooth bleaching using a 16% carbamide peroxide gel. Material and method Thirty-three sound bovine teeth were assigned to three groups of eleven teeth each: 1 – Teeth bleached (TB) four hours per day for 21 days; 2 – TB four hours per day for 21 days and immersed in coffee solution immediately after tooth bleaching; 3 – TB four hours per day for 21 days and immersed in coffee solution four hours after the end of tooth bleaching. Immersed in coffee was performed for 15 minutes and tooth color was assessed before the start of the bleaching procedure and after 21 days with an intraoral spectrophotometer. Test Shapiro-Wilk was used to assess homoscedasticity and data were submitted to one-factor Analysis of Variance (ANOVA) and Tukey’s test (p &lt;0.05). Result The color change observed in group 1 (5.76 ± 2.74)A was not statistically different from group 2 (8.83 ±5.11)A, which was immersed in coffee solution immediately after tooth bleaching, and from group 3, which was immersed in coffee solution four hours after tooth bleaching (8.20 ±3.71)A. Conclusion Coffee did not interfere with the tooth bleaching results, regardless of the time after the procedure. Hence, diet restrictions are not necessary during tooth bleaching.
DOI: 10.6084/m9.figshare.14287896.v1
title: Influence of cavo superficial enamel acid-etching on the microtensile bond strength of low-shrinkage composite resin

description: Abstract Introduction To prevent the shrinkage stresses produced during polymerization, composite resins of low polymerization shrinkage were developed. Objective To evaluate the microtensile bond strength in class I cavities restored by acid-etching the cavosurface angle and with composite resins indicated for posterior teeth. Material and method 48 healthy molars were selected and divided into six groups (n = 8), considering that the cavosurface enamel of three groups was etched with 35% phosphoric acid. The teeth were restored with the Clearfil SE Bond adhesive system and Filtek Z350 XT, Empress Direct, and Charisma Diamond composite resins, which were light-cured for 40 seconds. After 24 hours, the teeth were taken to a cutting machine, which produced sections in the buccolingual and mesiodistal directions. This resulted in toothpicks of 0.9×0.9 mm that were taken to the universal testing machine for the microtensile bond strength test. Statistical analysis was performed with ANOVA and Tukey’s test (p &lt; 0.05). Result There was no statistically significant difference between the groups evaluated. Conclusion Acid-etching the cavosurface angle did not affect the performance of restorations, probably due to the adhesive system used.
DOI: 10.6084/m9.figshare.14287893.v1
title: Would YouTube a reliable source of information about dental bleaching in Brazil?

description: Abstract Introduction Dental Bleaching is a widely procedure in dental practice, conducting patients to search for information and one of these sources of information it is videos from YouTube. Objective: Evaluate quality of information in videos from YouTube about dental bleaching in Brazil. Material and method: YouTube search for “dental bleaching” was performed. Theses videos are watched in full and categorized for two examinators. Reliability and usefulness were used to value the quality of information. Mann-Whitney test was used in statical analysis. Result The first 100 videos were examined for exclusion criteria and 22 were excluded, yielding 78 videos. About Usefulness of videos 65,4% were classified as non useful, 26,9% little useful, 6,4% moderately useful and just 1,3% as very useful. About reliability of videos 94% non used reliable sources of information, 69% of information was not balanced and impartial. However 60% of videos showed clear and objective information. Conclusion Actually YouTube was not a appropriate of information for patients about dental bleaching in Brazil. About quality of the videos, majority was not satisfactory for useful and reliability criteria. Dentists are the better source of information about dental bleaching, however most popular videos were from independent users e normally approaching homemade techniques of bleaching.
DOI: 10.6084/m9.figshare.14287890.v1
title: Micrographic evaluation of different widia compositions of orthodontic pliers submitted to peracetic acid and intensive use

description: Abstract Introduction The sterilization and disinfection procedures should be adapted to the chemical profile of the metal alloys present in the instruments. Objective This study aimed to perform a micrographic assessment on the surface characteristics of the widia of orthodontic pliers with two alloy compositions subjected to the action of 0.2% peracetic acid and intensive use. Material and method Twenty distal cutting pliers were divided into two groups (n=10) according to widia composition (%wt): W1- 85% to 87% of tungsten carbide (TC) and other components in the proportion of 13% to 15% and W2 – 87.5% to 88.5% of tungsten carbide and 11.5% to 12.5% for other components. All the pliers were assessed in a stereoscopic magnifying glass (32x) after three treatments: before use (T0); after cutting 100 segments of rectangular stainless-steel wires – intensive use (T1); and after 100 sterilization cycles in 0.2% peracetic acid and intensive use (T2). The cutting sites of all pliers were standardized. Widia regions were defined by line “A” representing T1 and line “B” representing T2. A frequency distribution table and Fisher’s exact test (α=0.05) was performed. We assessed two widia from each composition and treatment in SEM and energy-dispersive X-ray spectroscopy (EDS/SEM). Result The results showed that W1 pliers presented significantly fewer defects after the sterilization cycles with peracetic acid and intensive use than W2 pliers (p=0.0198). There were no differences between both pliers after intensive use (p=1.000). Conclusion The SEM images and EDS analyses showed changes in widia surfaces after the different treatments. Widia composition affected the resistance of the orthodontic pliers after sterilization cycles with 0.2% peracetic acid and intensive use.
DOI: 10.6084/m9.figshare.14287889.v1
title: Evaluation of the effect of tooth polishing on color stability after in-office bleaching treatment

description: Abstract Introduction One of the most commonly used corrective methods for staining teeth is tooth bleaching. However, subclinical alterations may occur in the micromorphology of dental tissues during the bleaching procedure, such as increases in porosity and surface roughness. Consequently, dental enamel may become more permeable and susceptible to staining. Objective To evaluate the influence of tooth polishing after in-office bleaching treatment on color stability. Material and method Thirty-three extracted human molars were used. The teeth were cut in the mesiodistal direction to obtain two samples per tooth (total of 66). The samples were randomly divided into six groups (n=11). Before and after the bleaching treatment, the lightness of the samples and change in lightness (∆L) were determined with a digital spectrophotometer (Easy Shade). The samples were bleached with 35% hydrogen peroxide (three sessions weekly). Three groups were submitted to polishing with felt discs and polishing paste after each session. To simulate the oral conditions during the consumption of colored beverages, the samples were submitted to alternating cycles of immersion in staining solutions (coffee, red wine, and Coca Cola). Result Polishing resulted in an increase of mean lightness of 4.49 in the red wine group, 2.73 in the coffee group, and 4.08 in the cola group. The difference was significant in the red wine group (p&lt;0.022), but not in the coffee or cola group. Conclusion Polishing after in-office bleaching using felt discs and polishing paste can reduce the degree of pigment impregnation in patient with red wine rich diet.
DOI: 10.6084/m9.figshare.14287886.v1
title: App adoption and switching behavior: applying the extended tam in smartphone app usage

description: ABSTRACT The increasing use of mobile applications have been escalating with the increasing use of smartphones. In the present study, we examine (a) the adoption behavior of mobile apps using the extended TAM framework, and (b) whether adoption leads to subsequent use behavior and switching intentions. Based on data collected from two surveys in India we test the conceptual model of extended TAM and the effects of behavior on switching intentions using factor analysis and structural equation modeling. The major findings indicate a significant effect of most predictor variables on the perceived usefulness and perceived ease of use of apps. Further, we found a significant effect of behavioral intention on use behavior and subsequent switching intentions to apps from computers/laptops.
DOI: 10.6084/m9.figshare.14287883.v1
title: Evaluation of artificial monoradicular teeth used for endodontic training

description: Abstract Introduction It is a challenge of pre-clinical teaching in Endodontics to provide students with artificial teeth that reproduce the internal and external morphology of human teeth. Objective To compare the internal and external morphology of single-rooted artificial teeth with data from the literature on human teeth. Material and method The artificial teeth were donated from two companies: Fábrica de Sorrisos, company A, (n=20) and IM do Brasil Ltda, company B (n=20). Measurement of total tooth length, root, height, buccal-palatal and mesio-distal crown dimensions with digital caliper was performed. The morphological description of the roots, crown and pulp chamber was performed, the last one only after access. The topographic location of the main apical foramen was evaluated after canal exploration with a K #15 endodontic instrument until it visually reached the root apex. The data were arranged in a spreadsheet and statistical analysis was performed (ANOVA, followed by the Tukey post-test (α=5%)). Result Regarding the morphometric parameters, the upper canine sample from company B presented all variables within the standards described in the literature. Regarding internal and external morphology, the sample of upper lateral incisors from Company A was the only one to present all variables within the standards described in the literature. Regarding the foraminal topographic location, the teeth of Company A, as well as the lower canine of company B, showed a tendency to the distalized and centralized position, in line with the literature. Conclusion none of the artificial teeth studied showed total morphological and morphometric similarity with the control, differing in at least one of the variables, and a review of their models is indicated to the manufacturers.
DOI: 10.6084/m9.figshare.14287881.v1
title: Evaluation of the Residency Programs of the Federal University of Rio Grande do Sul from the residents’ view

description: Abstract Introduction The multi-professional residencies in the Health area started to improve after the Law n° 11.129 of 2005. They are a modality of Latu-sensu graduate education, with the purpose of training professionals to work in the National Unified Health System (SUS). Objective This study aimed to investigate the current situation, from a perspective of satisfaction with the training in Residency courses, with the residents of the Federal University of Rio Grande do Sul. Material and method It is a study with a mixed-methods approach. The quantitative section was conducted through the application of a questionnaire to all residents participating in the UFRGS Residency Programs in 2018. The qualitative part was conducted using the focus group technique. Result There were 81 participants in the quantitative component, and 14 residents of the Oral Health program participated in the focus groups. The quantitative results showed that residents received little or no guidance at the beginning of the program. The qualitative results showed questions that allow inferences about residents' dissatisfaction and lack of knowledge about the functioning of the Programs. Conclusion Residents recognize that there are still issues with program administration to be improved, and more especially, the recognition of the importance of the Residency Programs within the University.
DOI: 10.6084/m9.figshare.14287878.v1
title: CRYPTOCURRENCY: A MINE OF CONTROVERSIES

description: Abstract Cryptocurrency is attracting the attention of many disciplines. Based on a systematic literature review, the state of art of academic research on cryptocurrency was investigated, demonstrating its complexity and the lack of consensus about several issues, as its definition, its operation without a financial institution, the impacts on economy and its future developments. Considering these issues, Actor-Network Theory was selected as a theory that can provide methods, such as controversy mapping, to understand this complex subject. The article analyzes this scenario, presenting a set of research topics that can be considered to study controversies related to cryptocurrency.
DOI: 10.6084/m9.figshare.14287877.v1
title: Influence of photobiomodulation on pain perception during initial orthodontic tooth movement

description: Abstract Introduction Laser in low intensity (LLI) has been used to reduce the discomfort and pain that is triggered by the forces applied during orthodontic treatment. Objective To evaluate the effect of LLI application in the pain perception of periodontal ligament initial compression, during orthodontic tooth movement; and to compare the effect of this therapy between men and women. Material and method The sample consisted of 30 volunteers, who needed orthodontic band placement on mandibular first molars. After insertion of the elastic separators, LLI was applied to the mesial and distal apical region (wavelength 808nm, energy 2J, time 20s and fluency of 8.32J/cm2) and at three points on the root region (wavelength 808nm, energy 1J, time 10s and fluency of 4.16J/cm2) of the first molar (irradiated side) and compared to the contralateral first molar (non-irradiated side), in three time intervals: 0hs, 24hs and 48hs. Pain perception was evaluated by the Visual Analog Scale (VAS), at 0hs, 24hs and 48hs after insertion, with significance of 5%. Result The pain level was observed to be significantly lower (p&lt;0.05) on the irradiated side, irrespective of gender and time. Women presented a significantly higher pain level (p&lt;0.05) than men, irrespective of time and side. There were no significant differences between the time intervals (p&gt;0.05). Conclusion It was concluded that LLI reduced the perception of initial pain in patients in whom compression of the periodontal ligament was promoted by elastic separation, and that women had a greater perception of pain sensitivity in the time intervals studied.
DOI: 10.6084/m9.figshare.14287874.v1
title: EXPLORING THE FACTORS THAT HAVE IMPACT ON CONSUMERS’ TRUST IN MOBILE PAYMENT SYSTEMS IN AUSTRALIA

description: Abstract Trust plays a vital role in the adoption of a new payment system in so far as people need to trust that the prevailing currency, or in other words, money, is recognised by all stakeholders. With the evolution of the payment methods, shifting from paper-based to electronic-based, building consumer trust has become a vital element for the success of businesses involved in the mobile payment systems sector. In this context, the aim of this study was to delve deeper into the factors that have impact on consumers trust in mobile payment systems (MPS) in Australia. A quantitative approach through a questionnaire survey was conducted to measure the data collected. The data of 200 participants were gathered using SurveyMonkey and the Excel spreadsheets was imported into SPSS (Statistical Package for the Social Sciences) system, where the data were organised. Besides, this study adopted the Partial Least Square Structural Equation Modeling (PLS-SEM), where the data analysis took place. The findings of PLS-SEM analysis pointed out that behavioural factors and organisational factors have significant impact on consumers’ trust, and this, as a consequence, have influence on MPS adoption. On the other hand, this research found that the technological factors, governmental factors and personal factors have no significant impact on Australian consumers’ trust and this, as a result, has no influence on MPS adoption.
DOI: 10.6084/m9.figshare.14287872.v1
title: THE POLITICS OF DATA PORTALS IN INTER- AND TRANSDISCIPLINARY RESEARCH

description: Abstract In this paper, we argue that the ongoing processes of datafication and dataism are constraining initiatives to construct open data portals contributing to inter- and transdisciplinary research. The former overvalues quantitative data, whereas the latter reinforces the belief that ‘raw data’ is neutral and apolitical, ignoring how data is processed. Based on the case study of an open data portal being developed at an inter- and transdisciplinary research institute, we argue that datafication and dataism are highly problematic trends, because they marginalize qualitative data employed in critical, constructivist, and other interpretive methods, thereby limiting the possibility of complementing and extending each other. Nonetheless, we also maintain that these trends are not technologically determined but are modifiable, based on the design of data portals. Accordingly, we conclude by offering suggestions for constructing data portals, such as opening up the design process and democratizing standards.
DOI: 10.6084/m9.figshare.14287869.v1
title: BIG DATA QUALITY DIMENSIONS: A SYSTEMATIC LITERATURE REVIEW

description: ABSTRACT Although big data has become an integral part of businesses and society, there is still concern about the quality aspects of big data. Past research has focused on identifying various dimensions of big data. However, the research is scattered and there is a need to synthesize the ever involving phenomenon of big data. This research aims at providing a systematic literature review of the quality dimension of big data. Based on a review of 17 articles from academic research, we have presented a set of key quality dimensions of big data.
DOI: 10.6084/m9.figshare.14287865.v1
title: ACCOUNTING STUDENTS’ PERFORMANCE IN DISTANCE EDUCATION: A STUDY FOCUSED ON SOCIODEMOGRAPHIC FACTORS

description: ABSTRACT This study aimed to investigate the relationship between accounting students’ performance and sociodemographic variables (namely gender, employment, marital status, and ethnicity) in distance education. I collected data from the 2015 National Exam of Students’ Performance, obtaining a final sample of 11,707 observations. Results indicated that male students outperformed female ones. Also, worker students have better performance than their colleagues. Married students obtained better performance than their single colleagues, but no relevant difference was found in comparison to other (divorced, widowed, etc.) students. Regarding ethnicity, white students outperformed other students (black, brown, and others).
DOI: 10.6084/m9.figshare.14287863.v1
title: FACTORS THAT INFLUENCE THE ADOPTION AND IMPLEMENTATION OF PUBLIC DIGITAL ACCOUNTING ACCORDING TO THE EVALUATION BY MANAGERS OF BRAZILIAN COMPANIES

description: ABSTRACT This study aims to identify the factors that influence the adoption and implementation of the Public Digital Accounting System (Sistema Público de Escrituração Digital, or SPED) according to the evaluation of managers of Brazilian companies, expressed in response to a survey, based on the criteria established by the TOE framework, considering technological, organizational and environmental dimensions. The results show that although other factors influence decisions about the adoption and implementation of the SPED, government requirement, as a component of the environmental dimension, is the main factor driving those decisions. This seems to result from the fact that the government is a major, if not the main, actor in the regulatory environment. We also identified big expectations of companies regarding the possibility of reducing the volume of ancillary tax obligations (record-keeping and reporting obligations). The ranking generated from the survey is a contribution to the improvement of strategies for implementation of e-government projects, both by governments and companies.
DOI: 10.6084/m9.figshare.14287861.v1
title: SOMOTE_EASY: AN ALGORITHM TO TREAT THE CLASSIFICATION ISSUE IN REAL DATABASES

description: ABSTRACT Most classification tools assume that data distribution be balanced or with similar costs, when not properly classified. Nevertheless, in practical terms, the existence of database where unbalanced classes occur is commonplace, such as in the diagnosis of diseases, in which the confirmed cases are usually rare when compared with a healthy population. Other examples are the detection of fraudulent calls and the detection of system intruders. In these cases, the improper classification of a minority class (for instance, to diagnose a person with cancer as healthy) may result in more serious consequences that incorrectly classify a majority class. Therefore, it is important to treat the database where unbalanced classes occur. This paper presents the SMOTE_Easy algorithm, which can classify data, even if there is a high level of unbalancing between different classes. In order to prove its efficiency, a comparison with the main algorithms to treat classification issues was made, where unbalanced data exist. This process was successful in nearly all tested databases