cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.14286877
title: Intra- and inter-brand color differences of denture teeth under different illuminations

description: Abstract Debonding, staining and wear are usually the reasons for denture teeth replacement by new ones from same or different brands. Objective This study investigates the possible differences in color of denture teeth of the same or different brands under different illuminations, since their metameric behavior in color under specific illumination may become unacceptable. Methodology For the purpose of this study, 10 denture teeth (#11), shade A3, of 4 different brands were selected (Creopal/KlemaDental Pro, Executive/DeguDent, Cosmo HXL/DeguDent, Ivostar/Ivoclar-Vivadent). Teeth stabilized in white silicone mold and the CIELAB color coordinates of their labial surface under 3 different illumination lights (D65, F2, A) were recorded, using a portable colorimeter (FRU/WR-18, Wave Inc). ΔE*ab values of all possible pairs of teeth of the same brand (n=45) or pair combinations of different brands (n=100) under each illumination light, in a dry and wet state were calculated. Data were analyzed statistically using 3-way ANOVA, Friedman’s and Wilcoxon’s tests at a significance level of α=0.05. Results The results showed that brand type affected significantly L*, a* and b* coordinates (p&lt;0.0001), illumination a* and b* coordinates (p&lt;0.0001), but none of them was affected by the hydration state of teeth (p&gt;0.05). Intra-brand color differences ranged between 0.21-0.78ΔΕ* units with significant differences among brands (p&lt;0.0001), among illumination lights (p&lt;0.0001) and between hydration states (p=0.0001). Inter-brand differences ranged between 2.29-6.29ΔΕ* units with significant differences among pairs of brands (p&lt;0.0001), illumination lights (p&lt;0.0001) and hydration states (p&lt;0.0001). Conclusions Differences were found between and within brands under D65 illumination which increased under F2 or A illumination affected by brand type and hydration status. Executive was the most stable brand than the others under different illuminations or wet states and for this reason its difference from other brands is the lowest. In clinical practice, there should be no blending of teeth of different brands but if we must, we should select those that are more stable under different illuminations
DOI: 10.6084/m9.figshare.14286875
title: Titanium dioxide nanotubes incorporated into bleaching agents: physicochemical characterization and enamel color change

description: Abstract Titanium dioxide nanotubes are nanostructures that can accelerate the oxidation reaction of bleaching procedures and promote a more effective whitening effect. Objective This study evaluated physicochemical properties of bleaching agents incorporated with titanium dioxide (TiO2) nanotubes, and the effects on tooth color change at different periods. Methodology 40 premolars were treated according to the following groups (n=10): CP - 10% carbamide peroxide (1 hour daily/21 days); CPN - CP incorporated into TiO2; HP - 40% hydrogen peroxide (three 40-minute sessions/7 days apart); HPN - HP incorporated into TiO2. Color shade was evaluated at five different periods (baseline, after 7, 14 and 21 days of bleaching, and 7 days after end of treatment) according to Vita Classical, CIELab and CIEDE2000 scales. Mean particle size (P), polydispersity (PO) and zeta potential (ZP) were evaluated using dynamic light scattering. Data on the different variables were analyzed by mixed model tests for measures repeated in time (ZP e L*), generalized linear models for measures repeated in time (P, PO, Vita Classical and b*), and Friedman and Mann-Whitney tests (a* and color change/ΔE and ΔE00). Results CP and CPN presented higher P, higher PO and lower ZP than HP and HPN (p≤0.05). All groups showed a significant decrease in Vita Classical color scores after 7 days of bleaching (p&lt;0.05), and HPN presented a greater significant reduction than the other groups. L* increased in TiO2 presence, in all groups, without any differences (p&gt;0.05) in bleaching time. A significant reduction occurred in the a* and b* values for all the groups, and HPN presented lower a* and b* values (p&lt;0.05) than CPN. ΔE was clinically noticeable after 7 days, in all groups, and all groups resulted in a perceptible color change according to ΔE00. Conclusion TiO2 did not influence physicochemical properties of the bleaching agents. HPN presented more effective tooth bleaching than CPN.
DOI: 10.6084/m9.figshare.14286874
title: Experimental gel containing bioactive glass-ceramic to minimize the pulp damage caused by dental bleaching in rats

description: Abstract Objectives This study evaluated if the use of a bioactive glass-ceramic-based gel, named Biosilicate (BS), before, after or mixed with bleaching gel, could influence the inflammation of the dental pulp tissue of rats’ molars undergoing dental bleaching with hydrogen peroxide (H2O2). Methodology The upper molars of Wistar rats (Rattus norvegicus, albinus) were divided into Ble: bleached (35% H2O2, 30-min); Ble-BS: bleached and followed by BS-based gel application (20 min); BS-Ble: BS-based gel application and then bleaching; BS/7d-Ble: BS-based gel applications for 7 days and then bleaching; Ble+BS: blend of H2O2 with BS-based gel (1:1, 30-min); and control: placebo gel. After 2 and 30 days (n=10), the rats were euthanized for histological evaluation. The Kruskal-Wallis and Dunn statistical tests were performed (P&lt;0.05). Results At 2 days, the Ble and Ble-BS groups had significant alterations in the pulp tissue, with an area of necrosis. The groups with the application of BS-based gel before H2O2 had moderate inflammation and partial disorganization in the occlusal third of the coronary pulp and were significantly different from the Ble in the middle and cervical thirds (P&lt;0.05). The most favorable results were observed in the Ble+BS, which was similar to the control in all thirds of the coronary pulp (P&gt;0.05). At 30 days, the pulp tissue was organized and the bleached groups presented tertiary dentin deposition. The Ble group had the highest deposition of tertiary dentin, followed by the Ble-BS, and both were different from control (P&lt;0.05). Conclusion A single BS-based gel application beforehand or BS-based gel blended with a bleaching gel minimize the pulp damage induced by dental bleaching.
DOI: 10.6084/m9.figshare.14286872
title: Effect of violet LED light on in-office bleaching protocols: a randomized controlled clinical trial

description: Abstract Objective This study evaluated the clinical effect of violet LED light on in-office bleaching used alone or combined with 37% carbamide peroxide (CP) or 35% hydrogen peroxide (HP). Methodology A total of 100 patients were divided into five groups (n=20): LED, LED/CP, CP, LED/HP and HP. Colorimetric evaluation was performed using a spectrophotometer (ΔE, ΔL, Δa, Δb) and a visual shade guide (ΔSGU). Calcium (Ca)/phosphorous (P) ratio was quantified in the enamel microbiopsies. Measurements were performed at baseline (T 0 ), after bleaching (T B ) and in the 14-day follow-up (T 14 ). At each bleaching session, a visual scale determined the absolute risk (AR) and intensity of tooth sensitivity (TS). Data were evaluated by one-way (ΔE, Δa, ΔL, Δb), two-way repeated measures ANOVA (Ca/P ratio), and Tukey post-hoc tests. ΔSGU and TS were evaluated by Kruskal-Wallis and Mann-Whitney, and AR by Chi-Squared tests (a=5%). Results LED produced the lowest ΔE (p&lt;0.05), but LED/HP promoted greater ΔE, ΔSGU and Δb (T 14 ) than HP (p&lt;0.05). No differences were observed in ΔE and ΔSGU for LED/CP and HP groups (p&gt;0.05). ΔL and Δa were not influenced by LED activation. After bleaching, LED/CP exhibited greater Δb than CP (p&gt;0.05), but no differences were found between these groups at T 14 (p&gt;0.05). LED treatment promoted the lowest risk of TS (16%), while HP promoted the highest (94.4%) (p&lt;0.05). No statistical differences of risk of TS were found for CP (44%), LED/CP (61%) and LED/HP (88%) groups (p&gt;0.05). No differences were found in enamel Ca/P ratio among treatments, regardless of evaluation times. Conclusions Violet LED alone produced the lowest bleaching effect, but enhanced HP bleaching results. Patients treated with LED/CP reached the same efficacy of HP, with reduced risk and intensity of tooth sensitivity and none of the bleaching protocols adversely affected enamel mineral content.
DOI: 10.6084/m9.figshare.14286870
title: Analysis of permanent second molar development in children born with cleft lip and palate

description: Abstract The study of dental development in individuals born with cleft lip and palate (CLP) serves to determine when orthodontic intervention should start. Objective To evaluate the permanent second molar development in children born with cleft lip and palate according to Demirjian’s and Nolla’s methods. Methodology Out of a total of 513 digital panoramic radiographs, 113 pairs of children aged 3 to 16 years were selected. The exams were from children born with or without cleft lip and palate, of the same sex, with an age difference of up to 30 days. The images were analyzed by three examiners and reliability was checked through intra-examiner agreement by the Kappa test. The data were analyzed by Wilcoxon's and Mann-Whitney tests according to each dataset. Results The findings indicated delayed development of the permanent second molars in children with CLP (P&lt;0.001). The development of the right permanent second molar was delayed compared to the left molar in children with CLP. Moreover, mandibular teeth showed significantly earlier development than maxillary teeth in both the case and control groups. There was no significant difference in the development of permanent second molars between sexes. Conclusion Children with CLP presented delay in the development of permanent second molars.
DOI: 10.6084/m9.figshare.14286869
title: CAREER ADAPTABILITY, ENGAGEMENT AND JOB SATISFACTION: A PSYCHOLOGICAL NETWORK IN THE MILITARY EDUCATION CONTEXT

description: ABSTRACT Purpose: Evidence indicates that career adaptability and engagement are characteristics that improve coping with challenges inherent in a military career. Job satisfaction appears as a variable that interacts with both because it improves the maintenance of performance. The objective of this paper is to examine a psychological network (PN), including these variables. Originality/value: The interaction among these is well documented in the literature; nevertheless, it has not been researched in the context of military education. Information on the network can provide important insights for the development of strength-based training directed towards highly influential behaviors and attitudes of students. Design/methodology/approach: The research design was sectional and based on a quantitative analysis framework. A total of 962 male students from the second (n = 323; 33.6%), third (n = 345; 35.9%), and fourth (n = 294; 30.6%) years of the Academia Militar das Agulhas Negras (Aman), between 18 and 26 years old, completed our survey. Instruments included a demographic questionnaire, Job Satisfaction Scale, Career Adaptabilities Scale, and Utrecht Work Engagement Scale for Students. PNs were estimated for the complete sample and also for every academic year. Findings: One of our main findings indicates that the PN tends to lose connections across the academic years, especially considering job satisfaction and engagement items. Aman students might experience a natural process of disconnection from the academic environment and, therefore, constructs showing, for example, engagement for students lose configuration as a graphical community. A longitudinal study is needed in order to confirm differences detected among students from different years.
DOI: 10.6084/m9.figshare.14286866
title: Clinical and microbiological evaluation of non-surgical periodontal therapy in obese and non-obese individuals with periodontitis: a 9-month prospective longitudinal study

description: Abstract Objective Obesity is a chronic disease that negatively affects an individual’s general and oral health. The present study aimed to compare the clinical and microbiological effects of non-surgical periodontal therapy with the full mouth disinfection (FMD) protocol on obese and non-obese individuals at 9 months post-therapy. Methodology This clinical study was first submitted and approved by the Ethics Committee. Fifty-five obese patients and 39 non-obese patients with periodontitis were evaluated. The full-mouth periodontal clinical parameters, clinical attachment level (CAL), probing depth (PD), gingival index (GI), and plaque index (PI), were monitored at baseline, 3, 6, and 9 months after periodontal treatment with full mouth disinfection (FMD) protocol. The mean count of Tannerella forsythia , Porphyromonas gingivalis , Treponema Denticola , and Aggregatibacter actinomycetemcomitans was determined by quantitative polymerase chain reaction on subgingival biofilm samples. Demographic data were assessed by Chi-square test. For clinical and microbiological parameters, two-factor repeated-measures ANOVA was used. Results In both groups, periodontal therapy using the one-stage full-mouth disinfection protocol significantly improved CAL, PD, GI, and PI (p&lt;0.05). Obese and non-obese patients equally responded to non-surgical periodontal therapy (p&gt;0.05). Microbial count found no major differences (p&gt;0.05) between obese and non-obese individuals who had undergone non-surgical periodontal therapy. Conclusions Obesity did not affect the clinical and microbiological outcomes of non-surgical periodontal therapy.
DOI: 10.6084/m9.figshare.14286864
title: Effect of music at 432 Hz and 440 Hz on dental anxiety and salivary cortisol levels in patients undergoing tooth extraction: a randomized clinical trial

description: Abstract Objective The aim of this study was to compare the effects of music at 432 Hz, 440 Hz, and no music on the clinical perception of anxiety and salivary cortisol levels in patients undergoing tooth extraction. Methodology A parallel-group randomized clinical trial was conducted. Forty-two patients (average age: 23.8±7.8 years, 27 women) with a moderate level of anxiety were distributed in three groups: use of music for 15 minutes at a frequency of 432 Hz (n=15), at 440 Hz (n=15) and a control group without music (n=12). The CORAH Dental Anxiety Scale and salivary cortisol levels, estimated by the solid phase enzyme-linked immunosorbent assay (ELISA), were measured and compared before and after the music intervention between groups (two-way ANOVA-Tukey p&lt;0.05, RStudio). Results Significantly lower anxiety level values were observed at 432 Hz (8.7±2.67) and 440 Hz (8.4±2.84) compared to the control group (17.2±4.60; p&lt;0.05). The salivary cortisol level at 432 Hz (0.49±0.37 μg/dL) was significantly lower than 440 Hz (1.35±0.69 μg/dL) and the control group (1.59±0.7 μg/dL; p&lt;0.05). Conclusion The use of music significantly decreased clinical anxiety levels, and the frequency of 432 Hz was effective in decreasing salivary cortisol levels before tooth extraction.
DOI: 10.6084/m9.figshare.14286863
title: Risk factors for oropharyngeal dysphagia in cardiovascular diseases

description: Abstract Some conditions consolidated as risk factors for oropharyngeal dysphagia have already been identified in other diseases, such as neurological. Studies on cardiovascular diseases concentrate in individuals in the postoperative period; thus, it is unknown if these same factors occur in individuals hospitalized for clinical or surgical treatment of these diseases. Objective to correlate predictive risk factors for oropharyngeal dysphagia in individuals with cardiovascular disease admitted at a reference cardiology hospital. Methodology This is a retrospective clinical study. Medical records of 175 individuals hospitalized for clinical and/or surgical treatment at a reference cardiology hospital from January to June 2017, attendants of the Speech-Language Pathology and Nutrition team, were analyzed. Of these, 100 records were included in the study: 41 females and 59 males (mean age 67.56 years). Deaths and individuals from 0 to 18 years were excluded. Stroke, malnutrition, age and prolonged orotracheal intubation were considered predictive risk factors for oropharyngeal dysphagia. Mann-Whitney test and Fisher's test were used for statistical analysis. Results Stroke (OR=2.93 p=0.02), malnutrition (OR=2.89 p=0.02) and prolonged orotracheal intubation (OR=3.94 p=0.02) were statistically significant predictors for oropharyngeal dysphagia within this population. Age below 80 years was not significant (p=0.06), but within octogenarians, significance was found (p=0.033). Conclusion Stroke, malnutrition, prolonged orotracheal intubation and age &gt; 80 years are predictive risk factors for oropharyngeal dysphagia in adult population with cardiovascular diseases.
DOI: 10.6084/m9.figshare.14286862
title: SUBJECTIVE WELL-BEING AND FLOURISHING AT WORK: THE IMPACT OF PROFESSIONAL FULFILMENT

description: ABSTRACT Purpose: The main purpose of this study was to investigate the impact professional fulfilment has on aspects of positive psychology, such as subjective well-being and flourishing at work. Originality/value: We analyse whether professional fulfilment, as a career aspect, influences only work factors, such as flourishing, or if it also contributes to subjective well-being in life. Additionally, few studies have focused on professional fulfilment because of its novelty. Therefore, this study contributes to advancing a new concept, as well as to the development of new models and theories in positive psychology. Design/methodology/approach: This is a quantitative, survey-type research study involving 358 participants who have a wide variety of jobs and professions. The questionnaire presented subjective well-being, flourishing at work and professional fulfilment scales, as well as socio-demographic questions. Data were analysed using bivariate correlations and multiple regression analysis. Findings: Results indicated that professional fulfilment predicts higher subjective well-being and flourishing at work. Therefore, the more people perceive they have achieved what they value in their career and demonstrate positive goal progress, the more they experience well-being in life in general and the more they flourish at work. There are major positive relationships between career goals, well-being and flourishing at work, which is consistent with previous studies. Future studies could analyse under which specific contextual conditions the pursuit of career goals has a higher or lower impact on subjective well-being and flourishing.
DOI: 10.6084/m9.figshare.14286860
title: BOARDS OF DIRECTORS IN BRAZIL: LITERATURE REVIEW AND RESEARCH AGENDA

description: ABSTRACT Purpose: The purpose of this paper is to review and systematize previous studies on boards of directors in Brazil and propose an agenda to guide future studies. Originality/value: A conceptual model is developed to provide an integrated view for research on the board of directors, incorporating variables from different levels that connect governance mechanisms, best practices, board dynamics and company performance; we identified gaps for the research agenda. Design/methodology/approach: This review analyzed 95 articles on boards of directors in Brazil between 2000 and 2019. The review was conducted in three major steps: 1. planning; 2. conducting; and 3. organizing the data and reporting the findings. Findings: There is a growing interest in studying boards of directors in Brazil, with a wide range of topics. The most studied are board composition, best practices, diversity and gender. Despite the diversity, the previous studies are homogeneous in theoretical and methodological terms. Based on the agency theory, most articles sought to relate board demography to financial performance, and the findings are not convergent. This scenario opens up some research avenues to address topics that have not yet been explored, such as board processes, board tasks, and differentiation between board performance and company performance.
DOI: 10.6084/m9.figshare.14286858
title: INTERORGANIZATIONAL LEARNING AND ABSORPTIVE CAPACITY: EMPIRICAL RESEARCH IN SMALL AND MEDIUM ENTERPRISES

description: ABSTRACT Purpose: This research analyzes the influence of interorganizational learning (IOL) on the absorptive (Acap), potential (Pacap) and realized (Racap) capacities on the environment of small and medium enterprises (SMEs). Originality/value: The study contributed to the understanding and expansion of IOL research operationalized through the elements of Acap. The understanding of these elements are fundamental for the development of competencies of SMEs from Brazil and/or emerging countries embedded on dynamic sectors and high technology mobility to adapt and develop new dynamic capabilities. Design/methodology/approach: The research was conducted by a survey with a sample of 215 organizations of the information technology and communication (ITC) sector in the State of Santa Catarina, Brazil. The data were analyzed using the structural equation modeling technique. Findings: The results showed that the relationships of IOL influence the development of new capabilities and have a strong influence over absorptive capacity development. The organizations ability to acquire, assimilate, apply and internalize the available knowledge in the sector through interorganizational relations was fundamental for their adaptation and survival.
DOI: 10.6084/m9.figshare.14286856
title: MY BUSINESS AND I: ENTREPRENEUR PERSONALITY TRAITS AND CAPITAL STRUCTURE CHOICE

description: ABSTRACT Purpose: This research seeks to identify how entrepreneurs’ personality traits can influence the capital structure of micro and small private businesses in Brazil, which are important for the economic growth and the subsistence of their owners. Originality/value: The study of the behavioral dimension of business decisions can help financial agents to better understand client behavior, including the adoption of mechanisms that identify possible risky or inefficient decisions made by managers based on their personality traits. It can also assist the government and institutions supporting micro and small private businesses in developing strategies to reduce the mortality of such companies. Design/methodology/approach: The proposed model involves 19 expected relationships that evaluate the relationships between the optimism, risk tolerance, sense of control (external and internal), attitude towards debt, and entrepreneur gender constructs. The sample includes 625 micro and small entrepreneurs in the state of Rio Grande do Sul, Brazil. Confirmatory factor analysis and structural equation modeling were performed. Findings: Results showed that attitude towards debt and gender were the most significant constructs and had a direct influence on the capital structure, while optimism and internal locus of control exerted a negative indirect influence, while risk tolerance had a positive indirect effect. Female managers demonstrated higher optimism and internal locus of control than male managers, but they had a worse attitude towards debt.