cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.11313305
title: Microbial profile of symptomatic pericoronitis lesions: a cross-sectional study

description: Abstract Objective: The microbial composition of pericoronitis (Pc) is still controversial; it is not yet clear if the microbial profile of these lesions is similar to the profile observed in periodontitis (Pd). Therefore, the aim of the present study was to describe the microbial profile of Pc lesions and compare it directly with that of subjects with Pd. Methodology: Subjects with Pc and Pd were selected, and subgingival biofilm samples were collected from (i) third molars with symptomatic Pc (Pc-T), (ii) contralateral third molars without Pc (Pc-C) and (iii) teeth with a probing depth &gt;3 mm from subjects with Pd. Counts and proportions of 40 bacterial species were evaluated using a checkerboard DNA-DNA hybridization technique. Results: Twenty-six patients with Pc and 18 with Pd were included in the study. In general, higher levels of microorganisms were observed in Pd. Only Actinomyces oris and Eubacterium nodatum were present in higher mean counts in the Pc-T group in comparison with the Pc-C and Pd-C groups (p&lt;0.05). The microbiota associated with Pc-T was similar to that found in Pc-C. Sites with Pc lesions had lower proportions of red complex in comparison with the Pd sites. Conclusion: The microbiota of Pc is very diverse, but these lesions harbour lower levels of periodontal pathogens than Pd.
DOI: 10.6084/m9.figshare.11313305.v1
title: Microbial profile of symptomatic pericoronitis lesions: a cross-sectional study

description: Abstract Objective: The microbial composition of pericoronitis (Pc) is still controversial; it is not yet clear if the microbial profile of these lesions is similar to the profile observed in periodontitis (Pd). Therefore, the aim of the present study was to describe the microbial profile of Pc lesions and compare it directly with that of subjects with Pd. Methodology: Subjects with Pc and Pd were selected, and subgingival biofilm samples were collected from (i) third molars with symptomatic Pc (Pc-T), (ii) contralateral third molars without Pc (Pc-C) and (iii) teeth with a probing depth &gt;3 mm from subjects with Pd. Counts and proportions of 40 bacterial species were evaluated using a checkerboard DNA-DNA hybridization technique. Results: Twenty-six patients with Pc and 18 with Pd were included in the study. In general, higher levels of microorganisms were observed in Pd. Only Actinomyces oris and Eubacterium nodatum were present in higher mean counts in the Pc-T group in comparison with the Pc-C and Pd-C groups (p&lt;0.05). The microbiota associated with Pc-T was similar to that found in Pc-C. Sites with Pc lesions had lower proportions of red complex in comparison with the Pd sites. Conclusion: The microbiota of Pc is very diverse, but these lesions harbour lower levels of periodontal pathogens than Pd.
DOI: 10.6084/m9.figshare.11313335.v3
title: Post-orogenic tectonic evolution of the suture zone between the North China Craton and South China Block: Insights from a petrostructural study of the Late Mesozoic granites, Jiaodong Peninsula, East China

description: Here we present the data of anisotropy of magnetic susceptibility (Table S1) and the plot diagram (Figure S1) for Late Mesozoic plutons submitted to Journal of Geophysical Research- Solid Earth.Abstract of the study: The Late Mesozoic tectonics of East China is characterized by widespread magmatism, large-scale thrusting and folding, extensional dome structures, strike-slip faulting and block rotation. As a part of East China, the Sulu orogen is famous for its ultra-high pressure (UHP) metamorphism related to the Triassic continental deep subduction of South China Block (SCB) beneath the North China Craton (NCC), and the post-orogenic tectonics have reactivated major lithospheric structures of the Triassic orogen. Hence, the Late Mesozoic post-orogenic tectonic evolution is essential to understand the architecture of the UHP orogen and tectonic framework of East China. Polyphase deformations and magma emplacement have been recognized within the suture zone between NCC and SCB. Magnetic fabrics and Gravity modeling reveal the Late Jurassic plutons have concentric magnetic foliation pattern, NE–SW trending magnetic lineation, and NW–SE trending feeder zones at the depth. A significant D<sub>1</sub> event with a top-to-the-NE high-temperature shearing, coeval with the emplacement of the Late Jurassic plutons, is recognized. These results support a genetic link between the Late Jurassic pluton emplacement and regional NE–SW extensional tectonics. A compressional deformation (D<sub>2</sub>) is related to the Late Jurassic to Early Cretaceous southeastward thrusting. A subsequent extensional D<sub>3</sub> event with age around 126 Ma is featured by rolling-hinge structure with a top-to-the-WNW ductile shearing, corresponding to the Early Cretaceous NW–SE extensional tectonics. These new data indicate that the post-UHP orogen experienced a complex Late Mesozoic tectonics evolution, and are considered in a geodynamic model of the North China Craton destruction.<br>
DOI: 10.6084/m9.figshare.11313293
title: Mortality due to oral and oropharyngeal cancer in Uruguay from 1997 to 2014

description: Abstract Oral and oropharyngeal cancer is considered a public health problem in several countries due to its high incidence and mortality rate. Objective: This study aimed to analyze oral and oropharyngeal cancer mortality in Uruguay from 1997 to 2014 by age, sex and country region. Methodology: A time series ecological study using secondary data was performed. Data on mortality due to oral and oropharyngeal cancers were obtained from the Vital Statistics Department of Uruguay's Ministry of Public Health. Results: The cumulative mortality rate due to oral and oropharyngeal cancer over the study period was of 19.26/100,000 persons in women and 83.61/100.000 in men, with a mean annual rate of 1.75/100,000 in women and 7.60/100,000 in men. Mortality rate from both sites during the study period was 4.34 times higher in men than in women. Malignant neoplasms of other parts of the tongue and base of tongue showed the highest mortality rate. The means of the annual coefficients of deaths were higher for the age groups between 50 and 69 years. Higher mortality rates of oral and oropharyngeal cancer were observed in Artigas (4.63) and Cerro Largo (3.75). Conclusions: Our study described a high mortality rate for oral and oropharyngeal cancer in Uruguay from 1997 to 2014. According to the country's health department, men, tongue cancer, and oral cavity had higher mortality rates, with some variation. Prevention strategies with control of risk factors and early diagnosis are necessary to improve survival in the Uruguayan population.
DOI: 10.6084/m9.figshare.11313302.v1
title: Approaching Challenges in Teaching Learning Process of Statistics in Psychology Graduation Courses: a didatic contract overlook

description: Abstract Teaching concepts, competences and skills related to data analysis in Psychology graduation courses has proved to be a challenging issue. In the sphere of Mathematic skills, Statistics is indeed out of the scope of what is usually faced in the reminder of courses. The present work investigates features of the structure of the classroom in a course on Statistics from the Psychology graduation curriculum. For such purpose, we set the didactic contract as a theoretical guide, a “lunette” that allowed for observing the functional dynamics of the classroom, searching aspects that might be related to difficulties in the teaching-learning process. To enhance the analysis of the dynamics of the courses' performance, we carried out a comparative overview with a discipline having the usual structure characteristic from the Psychology graduation curriculum. This study is based not only on video-graphic registers of the classes, but in interviews with its professors as well. The compiled data was submitted to a clinical-interpretative analysis, pointing to several differentiation factors between the two disciplines, among them: classroom dynamics and evaluation systems. Specific to the Statistics course, important aspects appeared as negative interferences to the learning process, such as excessive manipulation of mathematical/statistical algorithms without the aid of informatics and computed data-processing. This study points to the importance of clarity in establishing a syllabus with respect to content, objectives, and structure of the statistics discipline in Psychology courses, in order to outline ways of didactic/pedagogical improvement for its offer…
DOI: 10.6084/m9.figshare.11313308.v1
title: Impact of calcium aluminate cement with additives on dental pulp-derived cells

description: Abstract Calcium aluminate cement (CAC) has been highlighted as a promising alternative for endodontic use aiming at periapical tissue repair. However, its effects on dental pulp cells have been poorly explored. Objective: This study assessed the impact of calcium chloride (CaCl2) and bismuth oxide (Bi2O3) or zinc oxide (ZnO) additives on odontoblast cell response to CAC. Methodology: MDPC-23 cells were exposed for up to 14 d: 1) CAC with 2.8% CaCl2 and 25% ZnO (CACz); 2) CAC with 2.8% CaCl2 and 25% Bi2O3 (CACb); 3) CAC with 10% CaCl2 and 25% Bi2O3 (CACb+); or 4) mineral trioxide aggregate (MTA), placed on inserts. Non-exposed cultures served as control. Cell morphology, cell viability, gene expression of alkaline phosphatase (ALP), bone sialoprotein (BSP), and dentin matrix protein 1 (DMP-1), ALP activity, and extracellular matrix mineralization were evaluated. Data were compared using ANOVA (α=5%). Results: Lower cell density was detected only for MTA and CACb+ compared with Control, with areas showing reduced cell spreading. Cell viability was similar among groups at days one and three (p&gt;0.05). CACb+ and MTA showed the lowest cell viability values at day seven (p&gt;0.05). CACb and CACb+ promoted higher ALP and BSP expression compared with CACz (p&lt;0.05); despite that, all cements supported ALP activity. Matrix mineralization were enhanced in CACb+ and MTA. Conclusion: In conclusion, CAC with Bi2O3, but not with ZnO, supported the expression of odontoblastic phenotype, but only the composition with 10% CaCl2 promoted mineralized matrix formation, rendering it suitable for dentin-pulp complex repair.
DOI: 10.6084/m9.figshare.11313311.v1
title: Occurrence of arbuscular mycorrhizal fungi on King George Island, South Shetland Islands, Antarctica

description: ABSTRACT Arbuscular mycorrhizal fungi make up an important ecological niche in ecosystems, and knowledge of their diversity in extreme environments is still incipient. The objective of this work was to evaluate the density and diversity of arbuscular mycorrhizal fungi in the soil of King George Island in the South Shetland Islands archipelago, Antarctica. For that, soil and roots of Deschampsia antarctica were collected at the brazilian research station in Antarctica. The spore density, species diversity and mycorrhizal colonization in the roots were evaluated. There was a low density of spores (27.4 ± 17.7) and root mycorrhizal colonization (6 ± 5.1%), which did not present statistical difference. Four species of arbuscular mycorrhizal fungi were identified, distributed in two genera: three species of the genus Glomus (Glomus sp1, Glomus sp2 and Glomus sp3) and one of the genus Acaulospora, which was identified at species level (Acaulospora mellea). Greater soil diversity was verified with pH 5.9 and phosphorus concentration of 111 mg dm-3, occurring two species of genus Glomus and A. mellea. Based on literature data, this may be the first record of this species of Acaulospora mellea in Antarctic soils, colonizing D. antarctica plants.
DOI: 10.6084/m9.figshare.11313287
title: Influence of a Retentive Shoulder Design to Prevent Early Failure of Three Core Build-Ups

description: Abstract This study evaluated the influence of a retentive shoulder design to prevent early failure of three resin composite build-ups on molars. Ninety-six intact extracted human maxillary third molars were assigned to two groups (n=48) based on occlusal, buccal cusps only and all cusps reduction. The groups were divided into two subgroups: pin retained and non-pin retained build-ups resulting in four groups (n=24), according the cusps reduction: pin retained/partial, pin retained/complete, non-pin retained/partial, non-pin retained/complete. Occlusal reduction was 3 mm with a semi-lunar retentive shoulder of 3 mm and an axial wall height of 1.5 mm. Groups were restored using a microhybrid, flowable or titanium reinforced resin composite. Modified self-curing acrylic resin provisional crowns were fabricated, cemented with non-eugenol temporary cement and thermal cycled. An instron machine applied tension to the provisional crowns parallel to the long axis of the tooth until dislodgement. A three-way analysis of variance was conducted on the influence of the variables on the retention of the core build-up. Ninety-three build-ups were retained under tensile load, while three core build-ups without pins were dislodged. Three-way analysis of variance showed no statistically significant difference between core build-ups using a retentive shoulder and pin retained core build-ups when tested under tensile load. With the advent of adhesive systems, increased surface area and retentive shoulder design can provide a retentive core foundation to prevent early failures of core build-ups during indirect restoration fabrication which will contribute to the longevity of final restorations.
DOI: 10.6084/m9.figshare.11313290
title: Fractions in the Continuing Formation of Teachers of the Early Years: fragments of a complexity

description: Abstract This work presents aspects of a qualitative research, of phenomenological approach, developed in the scope of the continuous formation of Mathematics teachers. Here, we present a training bias that recognizes teachers' estrangement as a triggering factor for the formative movement of sixteen teachers, in the theme of fractions as a school content. The analysis is based on the formative possibility of a four-hour meeting, which had as a starting point the perplexities of the teachers when they were asked what is familiar to each one of them when talking about the understanding of fraction. In a phenomenological posture, estrangement stands out as a philosophical attitude that moved the formation, allowing the arising of questions about school content and its teaching. In this perspective, the teachers' "realization" about the predominance of the technique and formal nomenclatures, with which they were launched to the attribution of fractional meanings, having as proposal the location in a number line. The study revealed the importance of a formation style in which the teacher is called by the anxieties that appear in the dialogue with their peers. Style, which considers the didactic technique, using a reorientation of the way of thinking, feeling and conceiving the world, given the uncertainty of learning each day how to be a teacher.
DOI: 10.6084/m9.figshare.11313293.v1
title: Mortality due to oral and oropharyngeal cancer in Uruguay from 1997 to 2014

description: Abstract Oral and oropharyngeal cancer is considered a public health problem in several countries due to its high incidence and mortality rate. Objective: This study aimed to analyze oral and oropharyngeal cancer mortality in Uruguay from 1997 to 2014 by age, sex and country region. Methodology: A time series ecological study using secondary data was performed. Data on mortality due to oral and oropharyngeal cancers were obtained from the Vital Statistics Department of Uruguay's Ministry of Public Health. Results: The cumulative mortality rate due to oral and oropharyngeal cancer over the study period was of 19.26/100,000 persons in women and 83.61/100.000 in men, with a mean annual rate of 1.75/100,000 in women and 7.60/100,000 in men. Mortality rate from both sites during the study period was 4.34 times higher in men than in women. Malignant neoplasms of other parts of the tongue and base of tongue showed the highest mortality rate. The means of the annual coefficients of deaths were higher for the age groups between 50 and 69 years. Higher mortality rates of oral and oropharyngeal cancer were observed in Artigas (4.63) and Cerro Largo (3.75). Conclusions: Our study described a high mortality rate for oral and oropharyngeal cancer in Uruguay from 1997 to 2014. According to the country's health department, men, tongue cancer, and oral cavity had higher mortality rates, with some variation. Prevention strategies with control of risk factors and early diagnosis are necessary to improve survival in the Uruguayan population.
DOI: 10.6084/m9.figshare.11313335.v5
title: Episodic crustal extension and compression, characterizing the Late Mesozoic tectonics of East China: Evidence from the Jiaodong Peninsula

description: Here we present the data of anisotropy of magnetic susceptibility (Table S1) of Late Mesozoic granitic plutons in East China.These data are used to understand the relationship between the magma emplacement and regional tectonics. This work has been submitted to <i>Tectonics</i>.<br>
DOI: 10.6084/m9.figshare.11313287.v1
title: Influence of a Retentive Shoulder Design to Prevent Early Failure of Three Core Build-Ups

description: Abstract This study evaluated the influence of a retentive shoulder design to prevent early failure of three resin composite build-ups on molars. Ninety-six intact extracted human maxillary third molars were assigned to two groups (n=48) based on occlusal, buccal cusps only and all cusps reduction. The groups were divided into two subgroups: pin retained and non-pin retained build-ups resulting in four groups (n=24), according the cusps reduction: pin retained/partial, pin retained/complete, non-pin retained/partial, non-pin retained/complete. Occlusal reduction was 3 mm with a semi-lunar retentive shoulder of 3 mm and an axial wall height of 1.5 mm. Groups were restored using a microhybrid, flowable or titanium reinforced resin composite. Modified self-curing acrylic resin provisional crowns were fabricated, cemented with non-eugenol temporary cement and thermal cycled. An instron machine applied tension to the provisional crowns parallel to the long axis of the tooth until dislodgement. A three-way analysis of variance was conducted on the influence of the variables on the retention of the core build-up. Ninety-three build-ups were retained under tensile load, while three core build-ups without pins were dislodged. Three-way analysis of variance showed no statistically significant difference between core build-ups using a retentive shoulder and pin retained core build-ups when tested under tensile load. With the advent of adhesive systems, increased surface area and retentive shoulder design can provide a retentive core foundation to prevent early failures of core build-ups during indirect restoration fabrication which will contribute to the longevity of final restorations.
DOI: 10.6084/m9.figshare.11313335.v4
title: Post-orogenic tectonic evolution of the suture zone between the North China Craton and South China Block: Insights from a petrostructural study of the Late Mesozoic granites, Jiaodong Peninsula, East China

description: Here we present the data of anisotropy of magnetic susceptibility (Table S1) and the plot diagram (Figure S1) for Late Mesozoic plutons submitted to Tectonics.Abstract of the study: The Late Mesozoic tectonics of East China is characterized by widespread magmatism, large-scale thrusting and folding, extensional dome structures, strike-slip faulting and block rotation. As a part of East China, the Sulu orogen is famous for its ultra-high pressure (UHP) metamorphism related to the Triassic continental deep subduction of South China Block (SCB) beneath the North China Craton (NCC), and the post-orogenic tectonics have reactivated major lithospheric structures of the Triassic orogen. Hence, the Late Mesozoic post-orogenic tectonic evolution is essential to understand the architecture of the UHP orogen and tectonic framework of East China. Polyphase deformations and magma emplacement have been recognized within the suture zone between NCC and SCB. Magnetic fabrics and Gravity modeling reveal the Late Jurassic plutons have concentric magnetic foliation pattern, NE–SW trending magnetic lineation, and NW–SE trending feeder zones at the depth. A significant D<sub>1</sub> event with a top-to-the-NE high-temperature shearing, coeval with the emplacement of the Late Jurassic plutons, is recognized. These results support a genetic link between the Late Jurassic pluton emplacement and regional NE–SW extensional tectonics. A compressional deformation (D<sub>2</sub>) is related to the Late Jurassic to Early Cretaceous southeastward thrusting. A subsequent extensional D<sub>3</sub> event with age around 126 Ma is featured by rolling-hinge structure with a top-to-the-WNW ductile shearing, corresponding to the Early Cretaceous NW–SE extensional tectonics. These new data indicate that the post-UHP orogen experienced a complex Late Mesozoic tectonics evolution, and are considered in a geodynamic model of the North China Craton destruction.<br>
DOI: 10.6084/m9.figshare.11313281
title: Physicochemical Properties and Bioactive Potential of a New Epoxy Resin-based Root Canal Sealer

description: Abstract The aim of this study was to evaluate physicochemical properties and bioactive potential of Sealer Plus, in comparison with MTA Fillapex, Sealapex and AH Plus. Setting time, flow, and radiopacity were evaluated based on ISO 6876 Standard. Flow was also assessed in area (mm²). The solubility and volumetric change of the sealers were evaluated after 7 and 30 days of immersion in distilled water. Solubility was evaluated by the difference in mass of materials before and after immersion. Volumetric change was evaluated by using microcomputed tomography (micro-CT). The bioactive potential was observed by Scanning Electron Microscopy (SEM) after immersion in PBS. Data were compared using ANOVA and Tukey tests (α=0.05). Sealer Plus presented the shortest setting time (196 min.) and Sealapex the longest (912 min.) (p&lt;0.05). AH Plus showed the highest radiopacity (9.5 mm Al) and MTA Fillapex the lowest (2.7 mm Al) (p&lt;0.05). All the sealers presented flow in accordance with ISO 6876/2012 (&gt;17 mm). Sealer Plus showed low solubility and volumetric change (&lt;1%), and MTA Fillapex showed the highest solubility (&gt;25%), and volumetric change (&gt;4%) after all time intervals (p&lt;0.05). MTA Fillapex was the only sealer that showed bioactive potential. In conclusion, Sealer Plus presented proper physicochemical properties. However, this sealer did not present a bioactive potential.