cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7131527.v1
title: Accumulated knowledge and prevention practices in oral health

description: This text begins by reflecting on health promotion and equity/ inequity. In health, inequity is understood as a political concept that has moral implications and that is committed to social justice. A discussion follows on some issues regarding the risk and prevention of diseases, still considered a hegemonic practice, and lack of experience in oral health-care, bearing in mind the concept of vulnerability. The risk is probabilistic and involves the mathematical chances of acquiring a disease in a certain group, whereas vulnerability addresses the potential of acquiring or not acquiring a disease in a certain environment. The need for systematic studies on determinants is stressed, with the ultimate goal of improving health and reducing inequities, and with the concern and political intention of including health equity in governmental policies.
DOI: 10.6084/m9.figshare.7131533.v1
title: Diagnosing non-cavitated lesions in epidemiological studies: practical and scientific considerations

description: Over the last decade, there has been growing interest in diagnosing non-cavitated lesions in epidemiological studies involving large numbers of preschool children, schoolchildren and young adults. In this context, assessment of lesions characteristics indicating whether or not there is ongoing mineral loss is also considered relevant. The reasoning sustained by these studies is that diagnosis of the caries process limited to the cavitated level is no longer in accordance with current state-of-the-art knowledge in cariology. This paper highlights one topic of the lecture entitled "Caries Process: Evolving Evidence and Understanding," presented at the 18th Congress of the Brazilian Association for Oral Health Promotion (Associação Brasileira de Odontologia de Promoção de Saúde - ABOPREV) in April 2013. In the framework of epidemiological studies, the interest in diagnosing active and inactive non-cavitated lesions was elucidated. However, relevant questions associated with the diagnosis of non-cavitated lesions that might raise concerns among researchers and health administrators were not addressed. The present paper aims to bring these questions into discussion. The contribution of this discussion in terms of developing the understanding of caries decline is analyzed by using data from a caries trends study of Brazilian preschool children residing in the Federal District of Brazil as an example. The inclusion of active and inactive non-cavitated lesions in the diagnosis of the caries process allowed us to demonstrate that, in Brazilian 1- to 5-year-old children, caries prevalence decreased significantly from 1996 to 2006, simultaneously with a reduction in the rate of caries progression.
DOI: 10.6084/m9.figshare.7131521
title: CT study of the performance of reciprocating and oscillatory motions in flattened root canal areas

description: Root canal preparation is an important step in endodontic treatment. The anatomical complexity of the middle third of the root compromises the effective cleaning of this area. Thus, advances have been made in instrumentation techniques and instruments for this purpose. The aim of this study was to evaluate the effects of three different instrumentation systems on the enlargement of the middle thirds of root canals in mandibular incisors. The preparation methods used were the reciprocating systems Reciproc (Group I) and WaveOne (Group II) and the oscillatory system Tilos (Group III). Comparisons were made by three-dimensional image reconstruction with cone-beam computed tomography before and after instrumentation. Changes in area, perimeter, centering ability, and pattern of preparation were analyzed. The results were subjected to ANOVA complemented by the Tukey’s test. Changes in area, perimeter, and tendency of transportation showed similar results among groups. The transportation index of the Tilos system was significantly lower than that of the other groups. Qualitative analysis of the preparation pattern showed that the Tilos system had a more uniform preparation, although Reciproc and WaveOne preparations appeared more rounded, incompatible with the original canal anatomy. There was similarity in the systems’ performance on flattened areas, although the Tilos system presented a better pattern of root canal preparation and a lower index of transportation.
DOI: 10.6084/m9.figshare.7131524
title: Negative self-perceived health associated with school violence in adolescents

description: Abstract Objective To verify the association between negative self-perception of health and school violence in adolescent students of the Municipality of Olinda (PE), Brazil. Methods This is a cross-sectional, analytical and school-based study with a sample consisting of 2,614 adolescents selected through a strategy of random sampling in conglomerates. The information was obtained through the questionnaire “Youth Risk Behavior Survey” from which the issues of violence and self-perceived health were retrieved. Data were tabulated by Epi-data version 3.1 program and transcribed for SPSS version 22. The Chi-square test and the stepwise binary logistic regression model were used for data analysis. Results We observed that 26.7% of adolescents had a negative self-perception of health, and this was greater among girls. Concerning school violence, negative self-perception was associated with feelings of sadness, suicidal thoughts, bullying at school, robbery at school and safety at school. Gender and age were also associated (p &lt; 0.05). Conclusion We reinforce the need for culture and peace actions in adolescence, involving the school environment to reflect on poor health assessed by adolescents and reduce the rate of violence.
DOI: 10.7284/132604
title: Fluorometer data collected during research cruise WS18008 using a Turner Cyclops-7 instrument system onboard the platform RV F.G. Walton Smith

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7131521.v1
title: CT study of the performance of reciprocating and oscillatory motions in flattened root canal areas

description: Root canal preparation is an important step in endodontic treatment. The anatomical complexity of the middle third of the root compromises the effective cleaning of this area. Thus, advances have been made in instrumentation techniques and instruments for this purpose. The aim of this study was to evaluate the effects of three different instrumentation systems on the enlargement of the middle thirds of root canals in mandibular incisors. The preparation methods used were the reciprocating systems Reciproc (Group I) and WaveOne (Group II) and the oscillatory system Tilos (Group III). Comparisons were made by three-dimensional image reconstruction with cone-beam computed tomography before and after instrumentation. Changes in area, perimeter, centering ability, and pattern of preparation were analyzed. The results were subjected to ANOVA complemented by the Tukey’s test. Changes in area, perimeter, and tendency of transportation showed similar results among groups. The transportation index of the Tilos system was significantly lower than that of the other groups. Qualitative analysis of the preparation pattern showed that the Tilos system had a more uniform preparation, although Reciproc and WaveOne preparations appeared more rounded, incompatible with the original canal anatomy. There was similarity in the systems’ performance on flattened areas, although the Tilos system presented a better pattern of root canal preparation and a lower index of transportation.
DOI: 10.6084/m9.figshare.7131524.v1
title: Negative self-perceived health associated with school violence in adolescents

description: Abstract Objective To verify the association between negative self-perception of health and school violence in adolescent students of the Municipality of Olinda (PE), Brazil. Methods This is a cross-sectional, analytical and school-based study with a sample consisting of 2,614 adolescents selected through a strategy of random sampling in conglomerates. The information was obtained through the questionnaire “Youth Risk Behavior Survey” from which the issues of violence and self-perceived health were retrieved. Data were tabulated by Epi-data version 3.1 program and transcribed for SPSS version 22. The Chi-square test and the stepwise binary logistic regression model were used for data analysis. Results We observed that 26.7% of adolescents had a negative self-perception of health, and this was greater among girls. Concerning school violence, negative self-perception was associated with feelings of sadness, suicidal thoughts, bullying at school, robbery at school and safety at school. Gender and age were also associated (p &lt; 0.05). Conclusion We reinforce the need for culture and peace actions in adolescence, involving the school environment to reflect on poor health assessed by adolescents and reduce the rate of violence.
DOI: 10.6084/m9.figshare.7131515
title: Oral cancer from a health promotion perspective: experience of a diagnosis network in Ceará

description: The aim of this study is to share the experience of implementing a network for the diagnosis of oral cancer by integrating primary, secondary, and tertiary oral health care centers and identifying the possible weaknesses of the process. The study also investigated the risks of exposure to the main risk factors for oral and lip cancer and their most common potentially malignant lesions (PML). A quantitative cross-sectional study was conducted in two different regions, with patients seen at a primary health care facility from August 2010 to July 2011. Patients with oral lesions were referred to dental specialty centers for biopsy. Patients with PML were treated in dental specialty centers, and patients with squamous cell carcinoma (SCC) were referred to tertiary health care facilities. The dentists' knowledge of PML and SCC was assessed by an objective questionnaire. A total of 3,965 individuals were examined, 296 lesions were found, and 73 biopsies were performed, of which 13.7% were diagnosed as PML and 9.6% as SCC. Tobacco use and sunlight exposure were associated with SCC (85.7%) and PML (80%), respectively. In total, 55 dentists were assessed. The lesions most commonly recognized as PML were leukoplakia (74%), erythroplakia (57%), and actinic cheilosis (56%). Most dentists (74%) felt incapable of performing biopsies, most likely because of an anxiety towards oral cancer, and 57% had never performed one. The integration of primary and secondary health care enables the diagnosis of PML and SCC and establishes a diagnosis network. However, the inability of most primary care dentists to identify PML and perform biopsies is a weakness of the diagnostic process.
DOI: 10.6084/m9.figshare.7131515.v1
title: Oral cancer from a health promotion perspective: experience of a diagnosis network in Ceará

description: The aim of this study is to share the experience of implementing a network for the diagnosis of oral cancer by integrating primary, secondary, and tertiary oral health care centers and identifying the possible weaknesses of the process. The study also investigated the risks of exposure to the main risk factors for oral and lip cancer and their most common potentially malignant lesions (PML). A quantitative cross-sectional study was conducted in two different regions, with patients seen at a primary health care facility from August 2010 to July 2011. Patients with oral lesions were referred to dental specialty centers for biopsy. Patients with PML were treated in dental specialty centers, and patients with squamous cell carcinoma (SCC) were referred to tertiary health care facilities. The dentists' knowledge of PML and SCC was assessed by an objective questionnaire. A total of 3,965 individuals were examined, 296 lesions were found, and 73 biopsies were performed, of which 13.7% were diagnosed as PML and 9.6% as SCC. Tobacco use and sunlight exposure were associated with SCC (85.7%) and PML (80%), respectively. In total, 55 dentists were assessed. The lesions most commonly recognized as PML were leukoplakia (74%), erythroplakia (57%), and actinic cheilosis (56%). Most dentists (74%) felt incapable of performing biopsies, most likely because of an anxiety towards oral cancer, and 57% had never performed one. The integration of primary and secondary health care enables the diagnosis of PML and SCC and establishes a diagnosis network. However, the inability of most primary care dentists to identify PML and perform biopsies is a weakness of the diagnostic process.
DOI: 10.6084/m9.figshare.7131518
title: Photoelastic stress analysis in mandibular bone surrounding bar-clip overdenture implants

description: The aim of this in vitro study was to evaluate, using the photoelastic analysis method, the stress distribution in mandibular bone surrounding a bar-clip overdenture when 2 implant angulations were simulated. Two mandibular photoelastic models were manufactured, with 2 implants embedded in the interforaminal region: model 1 - PAPI, a photoelastic analysis model with parallel implants; and model 2 - PAAI, a photoelastic analysis model with angled implants. A bar-clip retention system and an overdenture were positioned over the implants, and loads of 1.0, 2.0 and 3.0 bars were applied. The resultant stresses that developed in the supporting structure were photoelastically monitored and were recorded photographically. The results showed that there were no similarities in the areas of stress among the photoelastic resin models when the angulation of the implants was evaluated. Model 1 - PAPI presented a higher stress concentration at the implant apex, while in model 2 - PAAI, there were higher stress concentrations on the mesial and distal implant faces. Within the limitations of this study, it was concluded that the PAPI photoelastic model demonstrated better stress transfer compared to the PAAI model, since the forces oriented along the axis were better absorbed by the bone.
DOI: 10.7284/132594
title: GNSS (Global Navigation Satellite System) data collected during research cruise WS18008 using a Raytheon 300 WAAS instrument system onboard the platform RV F.G. Walton Smith

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7131512
title: Penetration of a resin-based filling material into lateral root canals and quality of obturation by different techniques

description: The aim of this study was to evaluate the penetration of a resin/polyester polymer-based material (Resilon Real Seal; SybronEndo Corp., Orange, USA) into simulated lateral canals, and the quality of obturations by different techniques. A total of 30 standardized simulated canals were divided into three groups according to the technique of obturation used: MS (McSpadden), SB (SystemB/Obtura II), and LC (Lateral Condensation). To analyze the penetration of the filling material, the simulated canals were digitalized and the images were analyzed using the Leica QWIN Pro v2.3 software. The data of the middle and apical thirds were separately submitted to analysis of variance (ANOVA), followed by the Tukey’s test for the comparison of the techniques. Results showed a significant difference (p &lt; 0.05) between groups (LC &lt; SB) in the middle third, and a significant difference (p &lt; 0.05) between groups (LC &lt; SB and MS &lt; SB) in the apical third. To analyze the quality of the obturations, the canals were radiographed and evaluated by three examiners. The Kappa test on interexaminer agreement and the nonparametric Kruskal-Wallis test indicated no significant difference between filling techniques. It was concluded that Resilon achieves greater levels of penetration when associated with thermoplastic obturation techniques.
DOI: 10.6084/m9.figshare.7131518.v1
title: Photoelastic stress analysis in mandibular bone surrounding bar-clip overdenture implants

description: The aim of this in vitro study was to evaluate, using the photoelastic analysis method, the stress distribution in mandibular bone surrounding a bar-clip overdenture when 2 implant angulations were simulated. Two mandibular photoelastic models were manufactured, with 2 implants embedded in the interforaminal region: model 1 - PAPI, a photoelastic analysis model with parallel implants; and model 2 - PAAI, a photoelastic analysis model with angled implants. A bar-clip retention system and an overdenture were positioned over the implants, and loads of 1.0, 2.0 and 3.0 bars were applied. The resultant stresses that developed in the supporting structure were photoelastically monitored and were recorded photographically. The results showed that there were no similarities in the areas of stress among the photoelastic resin models when the angulation of the implants was evaluated. Model 1 - PAPI presented a higher stress concentration at the implant apex, while in model 2 - PAAI, there were higher stress concentrations on the mesial and distal implant faces. Within the limitations of this study, it was concluded that the PAPI photoelastic model demonstrated better stress transfer compared to the PAAI model, since the forces oriented along the axis were better absorbed by the bone.
DOI: 10.6084/m9.figshare.7131512.v1
title: Penetration of a resin-based filling material into lateral root canals and quality of obturation by different techniques

description: The aim of this study was to evaluate the penetration of a resin/polyester polymer-based material (Resilon Real Seal; SybronEndo Corp., Orange, USA) into simulated lateral canals, and the quality of obturations by different techniques. A total of 30 standardized simulated canals were divided into three groups according to the technique of obturation used: MS (McSpadden), SB (SystemB/Obtura II), and LC (Lateral Condensation). To analyze the penetration of the filling material, the simulated canals were digitalized and the images were analyzed using the Leica QWIN Pro v2.3 software. The data of the middle and apical thirds were separately submitted to analysis of variance (ANOVA), followed by the Tukey’s test for the comparison of the techniques. Results showed a significant difference (p &lt; 0.05) between groups (LC &lt; SB) in the middle third, and a significant difference (p &lt; 0.05) between groups (LC &lt; SB and MS &lt; SB) in the apical third. To analyze the quality of the obturations, the canals were radiographed and evaluated by three examiners. The Kappa test on interexaminer agreement and the nonparametric Kruskal-Wallis test indicated no significant difference between filling techniques. It was concluded that Resilon achieves greater levels of penetration when associated with thermoplastic obturation techniques.
DOI: 10.7284/132595
title: GNSS (Global Navigation Satellite System) data collected during research cruise WS18008 using a Raytheon 320 WAAS instrument system onboard the platform RV F.G. Walton Smith

description: Original (unprocessed) data collected during a Field_expedition
DOI: 10.6084/m9.figshare.7131506
title: Activity limitation in elderly people in the European context of gender inequality: a multilevel approach

description: Abstract The objective of the present study was to examine the magnitude of gender differences in activity limitations among the elderly, and the effect of the health and social individual factors and the context of social gender inequality in Europe. Cross-sectional design was performed. The study population included residents aged 60 years or over from 17 countries that participated in the Survey of Health, Ageing and Retirement in Europe conducted in 2010-13 (n = 49,685). Gender differences in activity limitation in each country was estimated. For multilevel analysis adjusted linear mixed effect models were used, where the intercept and ‘sex’ were considered random effects, with the 95% confidence intervals. The activity limitation index was created from a two parameter logistic combined models of item response theory. The average activity limitation index was significantly higher in women, (g10 = b1j = 0.36, p &lt; 0.001), and was then controlled by individual and contextual factors, while the extent of these differences varied among countries. The European countries with the greatest gender differences in activity limitations were those with the greatest social gender inequalities, with women presenting a significant disadvantage.
DOI: 10.6084/m9.figshare.7131506.v1
title: Activity limitation in elderly people in the European context of gender inequality: a multilevel approach

description: Abstract The objective of the present study was to examine the magnitude of gender differences in activity limitations among the elderly, and the effect of the health and social individual factors and the context of social gender inequality in Europe. Cross-sectional design was performed. The study population included residents aged 60 years or over from 17 countries that participated in the Survey of Health, Ageing and Retirement in Europe conducted in 2010-13 (n = 49,685). Gender differences in activity limitation in each country was estimated. For multilevel analysis adjusted linear mixed effect models were used, where the intercept and ‘sex’ were considered random effects, with the 95% confidence intervals. The activity limitation index was created from a two parameter logistic combined models of item response theory. The average activity limitation index was significantly higher in women, (g10 = b1j = 0.36, p &lt; 0.001), and was then controlled by individual and contextual factors, while the extent of these differences varied among countries. The European countries with the greatest gender differences in activity limitations were those with the greatest social gender inequalities, with women presenting a significant disadvantage.
DOI: 10.6084/m9.figshare.7131500
title: Preference for using posts to restore endodontically treated teeth: findings from a survey with dentists

description: The aim of this study was to evaluate if clinical experience, whether in relation to length of practice time and/or level of specialization influences the dentist’s preference for using posts to restore endodontically treated teeth. A cross sectional study was carried out using a questionnaire with dentists (n = 276) in Pelotas, southern Brazil. Data were collected regarding clinical experience, post-graduate training, and variables related to restorations (posts/cements and use of rubber dam) for endodontically treated teeth. The data were submitted to a descriptive analysis and associations were tested. The response rate was 68%. Cast metal posts (24.53%), glass fiber posts (20.75%) and resin cement (66.67%) were the most commonly selected materials. In relation to rubber dams, 93.05% of the dentists were found not use them to lute posts. There was a significant association between the level of training of post-graduate dentists and the type of post used (p = 0.027), in that dentists without post-graduate training used cast metal posts more frequently, whereas dentists with post-graduate training reported glass fiber posts as their first choice. The results of the study showed that dentists preferred cast metal posts, glass fiber posts and resin cement. Continuing education influenced the decision of the dentists on their choice of dental posts.