bluuebunny/crossref_metadata_2025 huggingface dataset:
Venture Financing As a Form of Interaction Between Small and Large Businesses
Authors: Smirnova A.
Published: December 2021

The market economy is currently characterized by a high mutual influence of the activities of various business entities on each other. Cooperation between small and large businesses will allow both parties to achieve maximum efficiency. The article is devoted to the consideration of venture financing as a factor in ensuring the growth of the small and medium-sized business sector, particularly in the sector of innovation.
Development of an Approach to the Formation of a Portfolio of Innovative Projects of an Industrial Enterprise
Authors: Domozhirova Irina , Mihaleva E.
Published: December 2021

The article is devoted to the issues of increasing the efficiency of innovative activity of an industrial enterprise, which ensures the implementation of the formed portfolio of innovative projects. Innovative development of economic entities is possible if new requirements to the content, organization, forms and methods of management activity are met [1], which means that tools for monitoring the innovative development of an industrial enterprise, methods for assessing innovative opportunities and the effectiveness of managerial decision-making in innovation are needed [3]. To solve this problem, it is proposed to use the algorithm presented in the article for the formation of a portfolio of innovative projects of an industrial enterprise, including the developed methodology for their selection according to efficiency and feasibility indicators, the use of which in management practice makes it possible to make a reasonable assessment of the possibility of successful implementation of these projects and ensure an increase in the probability of achieving a positive result. The selection of innovative projects according to efficiency and feasibility indicators for PJSC "CADVI" was carried out and a portfolio of innovative projects for this enterprise was formed.
Incentivizing Commuters to Carpool: A Large Field Experiment with Waze
Authors: Cohen Maxime C. , Fiszer Michael-David , Ratzon Avia , Sasson Roy
Published: December 2021

Problem definition: Traffic congestion is a serious global issue. A potential solution, which requires zero investment in infrastructure, is to convince solo car users to carpool. Academic/practical relevance: In this paper, we leverage the Waze Carpool service and run the largest ever digital field experiment to nudge commuters to carpool. Methodology: Our field experiment involves more than half a million users across four U.S. states between June 10 and July 3, 2019. We identify users who can save a significant commute time by carpooling through the use of a high-occupancy vehicle (HOV) lane, users who can still use an HOV lane but have a low time saving, and users who do not have access to an HOV lane on their commute. We send them in-app notifications with different framings: mentioning the HOV lane, highlighting the time saving, emphasizing the monetary welcome bonus (for users who do not have access to an HOV lane), and a generic carpool invitation. Results: We find a strong relationship between the affinity to carpool and the potential time saving through an HOV lane. Managerial implications: Specifically, we estimate that mentioning the HOV lane increases the click-through rate (i.e., proportion of users who clicked on the button inviting them to try the carpool service) and the onboarding rate (i.e., proportion of users who signed up and created an account with the carpool service) by 133%–185% and 64%–141%, respectively, relative to a generic invitation. We conclude by discussing the implications of our findings for carpool platforms and public policy.

History: This paper has been accepted as part of the 2021 Manufacturing & Service Operations Management Practice-Based Research Competition.

Supplemental Material: The online appendix is available at https://doi.org/10.1287/msom.2021.1033 .
Critical thinking and diagnostic reasoning when advanced practitioners assess and treat skin conditions
Authors: McPhillips Hazel , Wood Alison F , Harper-McDonald Bruce
Published: December 2021

Advanced clinical practitioner (ACP) roles require a broad range of knowledge of both medical and surgical medicine and the ability to work autonomously in a variety of settings. Despite around half of the UK adult population presenting with a skin condition requiring attention, this is something many ACPs feel unprepared to be consulted on. However, due to the complexity and large number of potential diagnoses, it is imperative that ACPs develop their confidence and knowledge to diagnosis, request investigations and initiate treatment for a patient with a skin complaint. In the first part of this clinical review the authors presented the key elements of history taking, consultation and assessment of the skin. This second clinical review discusses the main differential diagnoses, mimics, common investigations and treatments. This article is designed to support novice ACPs from acute hospital settings to primary care to develop a foundation of understanding in the main diagnosis and treatment options that should be considered following a clinical assessment of patients’ skin outside the dermatology setting.
Nutrition during the menopause: clinical considerations
Authors: Lynch Jackie
Published: December 2021

Jackie Lynch Registered Nutritional Therapist ( www.well-well-well.co.uk )
Perception of leakage: data from the Ostomy Life Study 2019
Authors: Down Gillian , Vestergaard Martin , Ajslev Teresa Adeltoft , Boisen Esben Bo , Nielsen Lene Feldskov
Published: December 2021

Background:

Leakage is a common problem for people with a stoma.

Aim:

To investigate how people with a stoma and stoma care nurses perceive different patterns of effluent under the baseplate.

Methods:

The Ostomy Life Study 2019 included a user survey and a nurse survey covering experiences of leakage and the perception of leakage.

Findings:

Most people with a stoma perceived effluent reaching outside the baseplate as leakage (88–90%), whereas effluent close to the stoma only was not perceived as leakage by the majority (81–91%). Effluent covering major parts of the baseplate was perceived as leakage by most respondents with a colostomy or ileostomy (83%), whereas fewer respondents with a urostomy perceived this as leakage (57%). Most of the nurses (70%) did not perceive effluent close to the stoma as leakage.

Conclusion:

This study revealed that effluent confined to the area next to the stoma is generally not perceived as leakage.
Pre-Drying Effect and Quality Change of Rough Rice under Hot Air-Assisted Radio Frequency Disinfestation Treatment
Authors: Damayanti Windi , Liao Meiji , Xu Yuanrong , Jing Pu , Jiao Shunshan
Published: December 2021

Highlights

HA-RF disinfestation treatment had better pre-drying effect of rough rice than that of HA treatment

Highest moisture loss (8.7%) was obtained for samples with highest IMC (39.6% d.b.)

Initial moisture content (IMC) correlated negatively with milling quality of rough rice

HA-RF can be used as a pre-drying method to partially reduce the moisture content

Abstract.Hot air-assisted radio frequency (HA-RF) is an environmentally friendly disinfestation method, which can completely control the insects and meanwhile maintain quality of rough rice. In this study, the pre-drying effect of HA-RF disinfestation treatment of rough rice with different initial moisture contents (IMCs) (16.7%, 24.8%, 34.7%, and 39.6% d.b.) was investigated along with associated quality change. HA-RF treatments had better pre-drying effect of rough rice with various IMCs than that of hot air (HA) treatment and larger electrode gap obtained lower moisture removal. IMCs of rough rice also influenced the moisture removal for HA-RF treatments, and the corresponding moisture loss were 4.3%, 5.3%, 6.1%, and 8.7% for the treated rough rice with IMC of 16.7%, 24.8%, 34.7%, and 39.6%, respectively. More quality loss was observed for the rough rice with higher IMC, especially for broken rate, fissure, and water uptake ratio. HA-RF treatment had no influences on total phenolic acids, protein, and fat contents, but amylose and vitamin E contents were affected. Non-milled rice treated by HA-RF had an obvious decrease in the lightness (L*) except for the samples with highest IMC (39.6%). RF disinfestation treatment can be used as a pre-drying method to partially reduce the moisture content (MC) of rough rice. Keywords: Disinfestation, Moisture content, Pre-drying, Quality, Rough rice.
Lensless phase imaging microscopy using multiple intensity diffraction patterns obtained under coherent and partially coherent illumination
Authors: Schiebelbein Antonius , Pedrini Giancarlo
Published: December 2021

In this paper, we show how high-resolution phase imaging is obtained from multiple intensity diffraction patterns. The results of the experiments carried out with different microscopic phase and amplitude samples illuminated with coherent and partially coherent light are presented. A comparison with experimental results obtained by digital holographic microscopy is given, and advantages/disadvantages of the techniques are discussed.
Magia e Superstição no Mediterrâneo Antigo
Authors: Fialho Maria do Céu , Candido Maria Regina , Rodrigues Nuno Simões
Published: December 2021

Este volume nos permitiu reunir especialistas brasileiros, espanhóis, franceses, gregos, italianos e portugueses que pesquisam sobre Magia e Superstição no Mediterrâneo Antigo. O tema circulou em torno da relação entre magia, religião e superstição em diferentes sociedades antigas e com uma acentuada bibliografia atualizada, que nos leva a refletir sobre a relação entre os homens e os deuses e as suas diferentes manifestações mágico?religiosas.
Selena MILLARES (ed.). La vanguardia y su huella. Madrid-Frankfurt am Main: Iberoamericana-Vervuert, 2020
Authors: Rico Alonso Sonia
Published: December 2021

Reseña de Sonia Rico Alonso sobre La Vanguardia y su huella. (Iberoamericana, 2020) de Selena Millares (ed.). 432p. ISBN: 978-84-9192-135-6.
COMPREHENSIVE GERIATRIC CARE VERSUS STANDARD CARE FOR ELDERLY REFERRED TO A REHABILITATION UNIT – A RANDOMIZED CONTROLLED TRIAL
Authors: Zintchouk D. , Lauritzen T. , Damsgaard E.M.
Published: December 2021

Objective: To investigate the effect of comprehensive geriatric care (CGC) in elderly referred to a rehabilitation unit. This article describes the considerations behind the study. Design: Participants were randomized to either CGC or standard care. Setting: Participants were recruited from two community care rehabilitation units in Aarhus Municipality, Denmark, in the period between 2012 and 2015. Participants: Inclusion: Elderly patients aged 65 and older admitted from home or hospital. Exclusion: Persons receiving palliative care or assessed by a geriatrician during the past month. Intervention: Medical history, physical examination, blood tests, medication adjustment and follow-up by a geriatrician. The control group received standard care with the general practitioners (GPs) as back-up. Outcomes: Primary outcome: Hospital contacts drawn from national registers. Secondary outcomes: GPs contacts, institutionalization, medication status and mortality collected from national registers, activities of daily living (ADL), physical and cognitive function and quality of life measures collected by a blinded occupational therapist. All outcomes were assessed at day 10, 30 and 90 after arrival at the rehabilitation unit. Conclusion: A new model of care for elderly referred to community rehabilitation was developed and implemented. The potential benefits of this model were compared with usual care in a community rehabilitation unit in a pragmatic randomized clinical trial. We hypothesized that the geriatrician-performed CGC in elderly referred to a rehabilitation unit will reduce the hospital contacts by 25 % without increase in mortality and in contacts to GPs and home care services. We expect that this model will prevent deterioration in ADL, physical and cognitive functioning, and reduce the risk of institutionalization. If the results are positive, community rehabilitation services should be encouraged to change their routines for treatment of this population accordingly.
IDEAL REDUCTION OF CALORIES FOR GREATEST REDUCTION OF BODY FAT AND MAINTENANCE OF LEAN BODY MASS
Authors: Lombardo M. , Magarotto R. , Marinelli F. , Padua E. , Caprio M. , Annino G. , Bellia A. , Iellamo F.
Published: December 2021

Objectives: This retrospective clinical study was intended to assess the ideal number of calories in the Mediterranean-style diet (MD) required for maximum weight reduction through a greater decrease in fat mass (FM) and maintenance of fat-free mass (FFM). Methods: We analysed the data of 90 non-smoking subjects (56 females, age = 32.5 ± 9.6 years, BMI = 28.3 ± 5.4 kg/m2, data as mean ± SD). The participants underwent two-month individualised MDs with similar macronutrient composition (55% carbohydrate, 30% fat, 15% protein and fibre > 30 g) but different amounts of energy, which varied daily from 374 kcal to 1305 kcal compared with the total energy expenditure measured by metabolic Holter. The sample was divided into nine groups of 10 subjects in order to establish the amount of energy restriction that was most effective in terms of achieving fat loss and maintaining muscle mass. Results: All subject groups had significant improvements in body composition parameters (weight loss = 2.7 ± 1.8 kg, FM loss = 2.2 ± 1.2 kg and FFM loss = 0.5 ± 1.3 kg). Differences between the nine groups were not significant but higher FM loss was observed in groups one, three, six and eight. Groups one and four had the highest FFM increase and groups two, three and eight had the highest FFM loss. Conclusions: These data suggest that increasing the amount of energy restriction in a low-calorie MD might be useless in terms of obtaining a higher FM loss but a lower restriction could be more effective for maintaining FFM.
THE POTENTIAL ROLE OF DIETARY FACTORS ON URINARY INCONTINENCE IN THE ELDERLY
Authors: Cherniack E.P. , Lee H.F.
Published: December 2021

Maintenance of urinary continence is a complex physiological process. Multiple morbidities can alter this process including polypharmacy, and age-related loss of physiological function. An increasing body of evidence suggests the importance of dietary factors and ingested substances. Modification of nutrients and ingested substances might prove beneficial adjunctive therapies in the treatment of incontinence, but remain unproven. Extrapolation of the results of epidemiologic studies of the relationship of excess caloric intake to continence, from the general adult population, suggests trials of weight loss might help. Population studies of vitamin D supplementation and continence also suggest an association, but prospective experimental trials involving vitamin D supplementation have yet to be done. A potential but far more equivocally documented relationship exists for vitamin B12 and continence. Surprisingly little evidence exists for other potential risk factors for incontinence such alcohol and sweeteners, natural or artificial. Future research should involve prospective trials of weight loss and vitamin D, and exploration of the relationship between other dietary factors and continence.
SARCOPENIA AND SARCOPENIC OBESITY IN OLDER COMMUNITY-DWELLING ADULTS WITH FAVORABLE HEALTH CONDITIONS
Authors: Ramírez-García E. , Moreno-Tamayo K. , Briseño-Fabian S.C. , Sánchez-García S.
Published: December 2021

Objective: Determine the prevalence of sarcopenia and sarcopenic obesity in community-dwelling older adults with favorable health conditions using the diagnostic criteria from the European Working Group on Sarcopenia in Older People (EWGSOP). Design: Cross-sectional study. Setting/Participants: Including 197 older adults representing a population-based sample (n = 1,252) from baseline (year 2014) of the Cohort of Obesity, Sarcopenia and Frailty of Older Mexican Adults (COSFOMA). Measurements: Anthropometric and body composition measurements were performed using bioelectric impedance analysis (BIA). Walking speed was determined with walking time of 4.5 m (<0.8 m/s), grip strength with dynamometer (women <20 kg and men <30 kg) and muscle mass using BIA (muscle mass index: women <6.1 kg/m2 and men <8.5 kg/m2). The cutoff point for low muscle mass was set at 2 SD below average for a group of young adults. For obesity, body fat percentage >60th percentile was considered (38.4% female and 26.7% male). A p value <0.050 was considered statistically significant. Results: Mean age of the 197 older adults (44.2% female and 55.8% male) was 66.4 years (5.6): women 66.6 years (5.6) and men 66.4 years (5.8). The prevalence of sarcopenia was 7.1% (women 6.9% and men 7.2%). The presence of sarcopenic obesity was 2.5% (women 1.1% and men 3.6%). Conclusion: The magnitude of sarcopenia in older adults is important despite the absence of adverse health effects. This finding provides a reference point for future studies.
EFFECTIVENESS OF PILATES AND CAMELLIA SINENSIS SUPPLEMENTATION ON CARDIOMETABOLIC RISK FACTORS AND REDOX MARKERS IN POSTMENOPAUSAL WOMEN: A PLACEBO-CONTROLLED, RANDOMIZED TRIAL
Authors: Junges S. , Dias Molina R. , Bittencourt Jacondino C. , Lopes Da Poian M. , Tatsch E. , Noal Moresco R. , Valle Gottlieb M.G.
Published: December 2021

Objective: To verify the effectiveness of Pilates and Camellia sinensis extract (CSE) supplementation on cardiometabolic risk factors and redox markers in postmenopausal women. Design: A placebo-controlled, randomized trial. Setting: community-dwelling postmenopausal women without disability. Participants: fifty postmenopausal women volunteers with cardiometabolic risk factors (high waist circumference, triglycerides, HDL-c, glucose and blood pressure). The volunteers participants were randomized in four groups: Pilates+CSE (14); Pilates+Placebo (11); CSE (11); and Placebo (14). Intervention: the CSE and Pilates+CSE intervention groups consumed one 500mg CSE capsule with excipient per day for 24 weeks. The Placebo group consumed one capsule with a placebo excipient per day for 24 weeks. Pilates training was performed twice weekly for 60 minutes each time, over 24 weeks. Measurements: cardiometabolic risk factors (glucose, waist circumference (WC), systolic blood pressure (SBP), diastolic blood pressure (DBP), triglycerides, high-density lipoproteins-HDL-c) and oxidative metabolism markers (advanced oxidation protein products (AOPP), ferric-reducing ability of plasma (FRAP), nitrosative stress marker (NOx), ischemia modified albumin (IMA). Results: When baseline variables were adjusted, the WC of the Pilates + CSE was significantly lower than that of the CSE and Placebo groups after the intervention (p<0,001).The triglycerides levels of the Pilates + CSE and Pilates + Placebo groups were significantly lower than those of the Placebo group (p= 0,010) . The glucose levels of the Pilates + CSE group were significantly lower than those of the Placebo group (p= 0,041). Whitin-group pre and post intervention comparison showed that Pilates+CSE group presented the best effect in some cardiometabolic risk factors, with significant reductions in tree cardiometabolic risk factor: waist circumference, triglycerides, glucose and FRAP (P=0.003, P<0.001, P=0.021 and P=0.041, respectively). The Pilates+Placebo group was found to be effective in reducing triglycerides (P=0.002), while the CSE group presented increased post-intervention NOx levels (p= 0.009). Conclusion: Our results suggest that Pilates and Camellia sinensis extract intervention may help to reduce some cardiometabolic risk factors in postmenopausal women.
Avaliação da superfície dental após procedimentos de raspagem e aplainamento radicular: estudo in vitro
Authors: Lara Paulo G. L. , Salgado Fernando D. , Aquino Davi R. , Pallos Débora , Ferreira Marco Aurélio , Cortelli José Roberto
Published: December 2021

O objetivo deste estudo in vitro foi avaliar a superfície dental por meio de microscopia eletrônica de varredura quanto a presença de cálculo e cemento residual, após a realização de raspagem e aplainamento radicular (RAR) variando força e movimento. Para tanto, foram utilizados 12 dentes unirradiculares, com cálculo aderido à superfície radicular e 12 curetas Gracey 5-6 (Hu-Friedy®) adaptadas a um Dispositivo de Tração Controlada (DTC) que simula a RAR. O DTC permitiu o controle da força (3, 8 e 13N) e do número de movimentos (cinco, dez, 15 e vinte) aplicados durante a instrumentação radicular. A componente Força foi avaliada estatisticamente por ANOVA e t de Student (p<0,05), enquanto o número de movimentos foi comparado entre grupos por Wilcoxon (p<0,05). Os resultados mostraram que quanto maior a força Aplicada menor a quantidade de cálculo e cemento residual (3/8N: p=0,0001) e (8/13N: p=0,0021), todavia, 15 e vinte Movimentos mostraram diferença marginalmente significativa (p=0,0679). Estes movimentos removeram maiores quantidades de cálculo e cemento em relação a cinco e dez movimentos (p=0,0001). A partir do presente estudo pode-se concluir que quanto maior a força aplicada maior a quantidade de cálculo e cemento removida. Por outro lado, a partir de determinado número de repetições (n=15), o aumento destas não trouxe benefícios adicionais quanto à remoção de cálculo e cemento radicular.
Prevalência de cárie e necessidades de tratamento em pré-escolares e escolares de Rafard – SP – Brasil
Authors: Do Amaral Regiane Cristina , H. Schlittler Hoffmann Rosana , Cypriano Silvia , Rosário de Sousa Maria da Luz , Zeppelini Silva Ângelo Alberto
Published: December 2021

Este estudo teve como objetivo conhecer a prevalência e severidade da cárie dentária, além de verificar as necessidades de tratamento odontológico em pré-escolares e escolares do município de Rafard-SP. A amostra foi composta por 128 crianças, sendo 71 pré-escolares de 5 anos e 57 escolares de 12 anos de idade. O índice ceo-d encontrado aos 5 anos foi igual a 2,45 (dp=3,45), e a porcentagem de crianças livres de cárie nesta idade de 49,3%. Aos 12 anos, o CPO-D foi de 2,47 (dp=2,52) enquanto que 31,6% das crianças estavam livres de cárie. Dentre as necessidades de tratamento, a porcentagem encontrada para restauração de uma e duas superfícies entre os escolares de 12 anos foi de 43,5% e 39,1% respectivamente, seguida pela extração (17,4%). Em relação ao CPO-D, o componente obturado apresentou a maior porcentagem (86,5%), seguido do cariado (12,1%) e perdido (1,42%). Nos pré-escolares (5 anos) , a necessidade de restauração de uma e de duas superfícies foi de 65,9% e 22,5% respectivamente, encontrando-se também 10,9% de necessidade de extração. Ainda em relação ao índice ceo-d, o componente cariado foi o mais preponderante (87,9%), seguido do obturado (11,5%) e perdidos (0,6%). Pode-se sugerir que os serviços odontológicos deste município sejam reorientados, com o intuito de se obter uma maior cobertura populacional e benefícios no controle da cárie dentária, ressaltando a necessidade de ações mais direcionadas às práticas de promoção de saúde.
Capacidade de ação solvente do eucaliptol e xilol sobre diferentes cimentos endodônticos
Authors: Tanomaru Filho Mário , Gouveia Jorge Érica , Guerreiro Tanomaru Juliane Maria
Published: December 2021

A remoção de material obturador durante o retratamento endodônico pode dificultar a limpeza dos canais radiculares. Este estudo teve como objetivo a avaliação da capacidade solvente do eucaliptol e xilol sobre cinco cimentos obturadores. Os materiais avaliados foram: AH Plus, Intrafill e os novos cimentos Roeko Seal (à base de silicone), Epiphany e Endo-Rez (à base de resina). Foram confeccionados corpos-de-prova circulares com 10 mm de diâmetro e 1 mm de espessura para cada cimento, os quais foram mantidos em estufa a 37oC por 48 h e depois divididos em 4 partes. Cada corpo-de-prova foi mantido em estufa e pesado em balança de precisão a cada 24 h até a estabilização da massa, quando a massa inicial foi determinada. Em seguida, os corpos-de-prova (n=8) foram imersos por 10 minutos nas soluções solventes avaliadas (eucaliptol e xilol). Depois de 48 h em estufa a 37ºC, foram realizadas novas pesagens a cada 24 h, até a estabilização (massa final). A diferença das massas final e inicial determinou a capacidade solvente sobre cada material. Os dados obtidos foram submetidos à análise de variância (????=0,05) demonstrando maior ação solvente do eucaliptol sobre o Intrafill, seguido pelo Epiphany e menor atuação sobre o AH Plus e Endo-Rez (p<0,05). O xilol apresentou maior ação solvente sobre o Intrafill e menor atuação sobre o AH Plus e o Endo-Rez (p<0,05). Conclui-se que os solventes eucaliptol e xilol apresentam pouca ação sobre os cimentos AH Plus e Endo-Rez, sendo mais efetivos sobre o cimento Intrafill.
Mechanical properties and microstructural analysis of an AgPd alloy cast under different temperatures
Authors: Olivieri Karina Andrea Novaes , Neisser Maximiliano Piero , Bottino Marco Antônio , Miranda Milton Edson , Wernek Rafael Dario
Published: December 2021

The metal restorations are used in Dentistry a long time ago. Nowadays we have resources that can get casting more accurate, with new material and equipments and techniques more precise. The purpose of this study was to evaluate the metallurgical and mechanical aspects of the AgPd dental alloy when it was submitted to different casting temperatures. It was used 30 specimens, divided in three groups (n=10): a) control group (no cast); b) casting temperature in accordance with the manufactures’ instructions (T1); b) casting temperature above manufactures´ instructions (like a torch) (T2). It was evaluated chemical and metallographic aspects, mechanical properties and Vickers hardness. The results showed a microstructure similar to T1 and T2 conditions, but with greater amount of light phase and particles in this last one. It was observed that the rupture tensile strength for the T1 condition was greater than the T2. The alloy in the no cast condition presented greater hardness but there was no statistically significant difference between T1 and T2. Supporting by the metallographic and mechanical results, it may predict that when elevated temperatures was used, above manufacture´s recommendations, it can occur failures in the prosthesis, like porosities, fissures or cracks.
Selamento apical em obturações retrógradas. Estudo em dentes bovinos empregando solução corante Rodamina B
Authors: Araújo Gustavo S. , Bortoluzzi Eduardo A. , Tanomaru Juliane Maria G. , Berbert Fábio Luiz C. V. , Filho Mário T.
Published: December 2021

A capacidade de selamento de materiais utilizados em endodontia tem sido avaliada por testes de infiltração com corantes. A proposta deste estudo foi avaliar o selamento apical de materiais utilizados em obturações retrógradas empregando modelo experimental com dentes bovinos. Quarenta incisivos bovinos recém extraídos, com raízes retas tiveram seus canais radiculares instrumentados e obturados. Após a secção da porção apical, cavidades retrógradas foram preparadas com pontas de retropreparo ultra-sônico e os dentes divididos aleatoriamente em três grupos experimentais (n=12) e quatro controles (n=4). Foram utilizados os materiais: Grupo I - MTA Angelus Cinza; Grupo II - Cimento de Óxido Zinco e Eugenol; Grupo III - Sealer 26. Em seguida, os dentes foram imersos em solução de Rodamina B a 0,2 % por 48 horas em ambiente com vácuo. Decorrido este período, os dentes foram seccionados longitudinalmente e as imagens digitalizadas analisadas por meio do programa Image Tool. Grupos controle positivo e negativo apresentaram infiltração máxima ou zero, respectivamente. Os resultados obtidos foram submetidos ao teste ANOVA e de Tukey demonstrando menor infiltração apical para o Sealer 26 (p<0,05). MTA e OZE apresentaram infiltração apical semelhante (p>0,05). Conclui-se que o cimento Sealer 26 proporciona selamento apical superior ao MTA e OZE, sendo o modelo experimental com dentes bovinos viável para a avaliação do selamento apical em obturações retrógradas.
Avaliação da aderência microbiana e rugosidade superficial de resina acrílica quimicamente ativada após ciclagem com diferentes soluções desinfetantes
Authors: Oliveira Jane R. , Paradella Thaís C. , Rego Marcos Augusto , Koga-Ito Cristiane Y. , Jorge Antonio Olavo C.
Published: December 2021

O objetivo do estudo foi analisar a rugosidade superficial e a aderência de Staphylococcus aureus (ATCC 6538) e Candida albicans (F-72) em placas de resina acrílica quimicamente ativada antes e após ciclagem com diferentes soluções desinfetantes. Para isso, quarenta corpos-de-prova de resina acrílica de 4 mm2 foram confeccionados utilizando uma matriz metálica. Os corpos-de-prova receberam polimento químico, tiveram a rugosidade superficial mensurada, foram esterilizados e a seguir imersos em caldo infusão cérebro-coração (BHI) para S. aureus e caldo Sabouraud para C. albicans, juntamente com suspensão padronizada (106 células/mL) de cada microrganismo. Após 24h/37°C, os microrganismos aderidos aos corpos-de-prova foram dispersos, diluídos e semeados em meio de cultura para determinar o número de unidades formadoras de colônias (UFC/mL). Em seguida, cada corpo-de-prova foi ciclado nas seguintes soluções por 28 dias: água destilada (grupo controle), gluconato de clorexidina a 0,12% (grupo clorexidina), vinagre (grupo vinagre) e cloreto de cetilpiridínio (grupo cloreto). Após ciclagem, o teste de aderência e o teste de rugosidade foram repetidos. Os resultados foram analisados estatisticamente pelo teste t de Student ao nível de significância de 5% e somente o grupo clorexidina apresentou diferença estatística significante, com a diminuição nos valores de aderência em relação aos demais grupos após a ciclagem. Em relação à rugosidade, nenhum grupo apresentou alteração significativa após a ciclagem. Concluiu-se que o gluconato de clorexidina a 0,12% alterou a aderência de S. aureus e C. albicans à resina acrílica, porém sem afetar sua rugosidade superficial.
Avaliação do contato de dois materiais retrobturadores na densidade óptica de corantes tamponados e não tamponados
Authors: Assis Neuza Maria S. P. , Gomes Ana Paula M. , Kubo Claudio H. , Mancini Maria Nadir G.
Published: December 2021

O objetivo deste trabalho foi avaliar a densidade óptica das soluções corantes azul de metileno 2% tamponada e não tamponada, rodamina B 2% tamponada e não tamponada, antes e após a imersão de dois materiais retrobturadores por diferentes períodos de tempo. As soluções corantes, sem a imersão dos espécimes, foram analisadas nos períodos de 0, 12, 24, 48 e 72 horas. Foram preparados oitenta espécimes de cimento Sealer 26 e oitenta de cimento de Portland, os quais foram imersos em 0,7 ml de cada uma das soluções corantes e avaliados nos períodos de tempo de 12, 24, 48 e 72 horas. A densidade óptica foi avaliada em espectrofotômetro ajustado em 596nm para o azul de metileno e 566nm para a rodamina B. Os dados obtidos foram analisados através dos testes ANOVA (3 fatores) e Tukey 5%. Os resultados mostraram que houve diferença estatisticamente significativa nos valores da densidade óptica do azul de metileno 2% tamponado após a imersão do Sealer 26 nos períodos de 24, 48 e 72 horas em relação ao tempo de 12 horas. Houve diferença estatisticamente significativa nos valores da densidade óptica da rodamina B 2% tamponada após a imersão do cimento de Portland nos períodos de 12, 24 e 48 horas em relação ao tempo de 72 horas. Pôde-se verificar que as soluções corantes não tamponadas apresentaram valores menores de densidade óptica. Dentre as soluções corantes analisadas, a rodamina B 2% tamponada apresentou comportamento mais estável quanto aos valores de densidade óptica até o período de avaliação de 48 horas.
Marginal leakage in permanent teeth after dentin treatment with air abrasion and adhesive systems
Authors: Zuanon Angela C. C. , Capote Ticiana S. O.
Published: December 2021

Due to doubts related to the application and association of techniques for appropriate adhesion, as the air abrasion system and last generation adhesive systems, the objective of this study was to evaluate the marginal leakage in Class V composite restorations in permanent teeth prepared with rotating instruments and then submitted to air abrasion and adhesive systems. Cavities were prepared with burs in high speed in facial and lingual surfaces of 25 human third molars. The specimens were divided into 5 groups of 10 preparations each: G1 (air abrasion and Scotchbond Multi Purpose), G2 (phosphoric acid and Scotchbond MP), G3 (Clearfil SE Bond self-etching system), G4 (air abrasion, phosphoric acid and Scotchbond MP) G5 (air abrasion and Clearfil SE Bond). All groups were restored with Z100 composite resin. The teeth were subjected to thermal cycling and immerged in 50% silver nitrate solution. After sectioning, the specimens were analyzed with a stereomicroscope for assessment of microleakage according to the degree of dye penetration. The Kruskal-Wallis test followed by Dunn Multiple Comparison test were performed in order to evaluate the differences among the experimental groups. Air abrasion groups demonstrated the greatest leakage. Scotchbond MP with phosphoric acid produced the least leakage, with greater leakage in gingival margins than occlusal margins in all experimental groups. It was concluded that dentin treatment with air abrasion should not be used in permanent teeth to reduce the marginal leakage.
Saúde bucal no psf, da inclusão ao momento atual: percepções de cirurgiões-dentistas e auxiliares no contexto de um município
Authors: Barbosa Aldenísia A. A. , Brito Ewerton W. G. , Costa Iris C. C.
Published: December 2021

O presente trabalho caracteriza-se como uma pesquisa-ação, com enfoque qualitativo. Refere-se especificamente às Equipes de Saúde Bucal (ESB) que foram inseridas no Programa Saúde da Família (PSF) implantadas no ano de 2001no município de São Gonçalo do Amarante – RN. Tem como objetivo descrever este processo de implantação, identificando a percepção dos profissionais de saúde bucal com relação às atividades desenvolvidas, ao processo de trabalho e à expectativa de melhoria das condições de saúde bucal das famílias adscritas. A coleta de dados foi realizada através de uma entrevista semi-estruturada onde os sujeitos de pesquisa eram os cirurgiões-dentistas e auxiliares de consultórios dentários das sete ESB, sendo entrevistados 92,85% do total destes profissionais. Os principais resultados encontrados foram os anseios de mudanças das práticas realizadas no modelo tradicional, bem como, a interação dos profissionais que compõem as ESB, na perspectiva de propiciar aos usuários do serviço uma assistência integral e resolutiva. Destaca-se também a necessidade da valorização dos profissionais como parte integrante das Equipes de Saúde da Família. Conclui-se que a mudança do quadro epidemiológico em saúde bucal a partir da inclusão das ESB no PSF é uma das metas a ser alcançada, bem como a melhoria do acesso dos usuários, à medida que esta estratégia possibilitará oferecer uma assistência à saúde universal e igualitária.
Avaliação do Ph de várias substâncias utilizadas no clareamento intracoronário
Authors: Sá Patrícia M. , Yui Karen Cristina K. , Gomes Ana Paula M.
Published: December 2021

O objetivo desta pesquisa foi avaliar, in vitro, dentro de um período de 7 dias, os valores do pH de 4 substâncias utilizadas no clareamento intracoronário. O pH foi avaliado em cinco amostras (quatro soluções clareadoras e uma solução controle). As amostras de cada grupo foram assim constituídas: a) Grupo 1: 15ml de água destilada; b) Grupo 2: 10g de perborato de sódio (Byofórmula – Farmácia de manipulação) com 5ml de água destilada; c) Grupo 3: 10g de perborato de sódio com 5ml de peróxido de carbamida 10% (Byofórmula – Farmácia de manipulação); d) Grupo 4: 10g de perborato de sódio com 5ml de peróxido de hidrogênio 30% (Byofórmula – Farmácia de manipulação); e) Grupo 5: 15ml de peróxido de hidrogênio 30%. Os materiais foram acondicionados em frascos plásticos (FujiFilm) e o valor do pH foi estabelecido com um aparelho pH-metro (Digimed DM-20), logo após a manipulação e também após 1h, 24h e 7 dias. Os resultados mostraram que os valores do pH das associações do perborato de sódio mantiveram-se praticamente constantes, com exceção da associação com o peróxido de hidrogênio, onde ocorreu um aumento gradativo do pH no decorrer dos períodos avaliados. O pH do peróxido de hidrogênio também apresentou-se constante, mantendo-se ácido durante todo o experimento. Das quatro soluções analisadas, apenas o peróxido de hidrogênio apresentou um pH ácido, que assim se manteve em todos os períodos avaliados.
Shear bond strength of resin composite to enamel treated with Er:Y AG laser and phosphoric acid
Authors: Svizero Nádia R. , Carvalho Renato S. , Domingues Lucirene A. , Pegorado Carolina N. , Francischone Carlos Henrique , Rocha Maíra Cristina A.
Published: December 2021

The purpose of this work was to evaluate the shear bond strength of resin composite to enamel treated with Er:YAG laser. It was used 33 human third molars. After the dental crowns cutting, the mesial and distal surfaces were embedded perpendicularly to the PVC cylinders long axis. Enamel was ground and the samples were randomly divided into 6 groups: G1- phosphoric acid (control), G2- Er:YAG laser (60mJ/10Hz), G3- Er:YAG (100mJ/10Hz), G4- Er:YAG (60mJ/10Hz + acid), G5- Er:YAG (100mJ/ 10Hz + acid), G6- Er:YAG (80mJ/2Hz). In all groups, Single Bond was used and resin composite cylinders (Z100) were prepared. The samples were stored in distilled water at 37oC for 24 hours and submitted to shearing test. G1 presented bond strength values significantly higher than G2, G3 and G6. The groups irradiated only with Er:YAG laser, in different intensities and frequencies, were equivalent as for the bond strength values. The groups treated with laser + acid presented strength values statistically equal to those of the control group. The enamel treatment with phosphoric acid, or its association with laser, is important to obtain good bond. The use of Er: YAG laser alone is not recommended, considering the conditions tested in this study.
Knowledge about composite restorations repair vs replacement- a survey among a subpopulation of saudi dental students
Authors: Alqarni Mohammed , Khalil Shamsun Nahar , Obied Eman Saeed Saeed , Alshehri Maha M , Assiri Manar Ali Abdulgader , Mualwi Sara Abdullah Muhammed , Thabet Sultanah Mohammed Saeed , Khateeb Shafait Ullah
Published: December 2021

Objectives: the purpose of this study was to evaluate the knowledge among dental students at King Khalid University, Jazan University, and Najran University in the kingdom of Saudi Arabia about when to repair or replace defective direct composite restoration. Materials and Methods: A questionnaire-based survey was formulated, pursuing the information about management (repair/replacement) of defective composite restorations and distributed among 200 dental students of three universities in the southern region of the kingdom of Saudi Arabia.The data were collected with the help of an online questionnaire. Data entry and the analysis were done using the statistical software package SPSS version 20.0. It was presented using descriptive statistics in the form of frequencies and percentages for qualitative variables, and range means and standard deviations for age, quantitative variable. Analytic statistics ere done using Chi-Square tests (x2) to test the significant difference between categorical variables. The level of significance, the p-value was 0.01 (p < 0.01). Results: The decision to choose between composite repair or replacement was influenced by whether this topic was taught to them at various undergraduate levels during Bachelor of Dental Surgery. The reason associated with the decision to repair defective composite restorations, 76% reported as cost-effective followed by Increased longevity (71%), the permanent filling (70%), patient’s preference for repair (65%), and least time consuming (50%). 67% participants preferred significantly (p<0.001) repair due to secondary caries in the previously restored tooth with composite, followed by the small surface defect in a composite restoration (65%), risk of pulpal damage significantly (p<0.001) in a defective composite restoration (62.5%) and more invasive and destructive treatment option (35%). More than half of respondents 123 (61.5%) reported that they were not taught about composite repair during the Bachelor of Dental Surgery. Conclusion: It is suggested with the help of our study that didactic and clinical training components regarding composite repair should be seriously included in the teaching curriculum of dental institutions as it is in the best interest of the patient. Dental students should be provided with clinical training on this topic so that they can follow proper decision-making protocols available during repair or replacement of defective resin composite restorations. Other researches in the future can be carried out for refining the guidelines and techniques utilized for composite repair.
KEYWORDS
Composite restoration; Discoloration; Polymerization shrinkage; Secondary caries.
Preface
Authors: Zoghlami Naouel , Brudermann Cédric , Sarré Cédric , Grosbois Muriel
Published: December 2021

The 2021 EUROCALL conference was held in Paris on 26-27 August 2021 as a
fully online event hosted by Cnam Paris. It was preceded by an online
project event, the CATAPULT Symposium on 25 August 2021 hosted by Sorbonne
Université. The conference theme was CALL and
Professionalisation...
Using virtual reality and peer feedback to reduce L2 speaking anxiety: an
exploratory study
Authors: Godefridi Isabelle , Suñer Ferran , Leblanc Cécile , Meunier Fanny
Published: December 2021

The present study explored whether the use of Virtual Reality (VR)
technology can help lower public speaking anxiety in the L2. To this end, we
conducted an exploratory effect-of-instruction study using a one-group
pre-test/post-test design with nine learners of English as an L2. The
results from the post-test show that using VR in combination with peer
feedback offers an interesting gateway to reducing public speaking
anxiety.
Experiences of using Unicam for asynchronous video assessment of the
Irish language
Authors: Lowney Rob , Uí Laighléis Gearóidín , Mac Risteaird Seán , Ní Mhuircheartaigh Éadaoin
Published: December 2021

Video is used widely in language education as a learning tool and a
production tool for students to demonstrate oral competence. In response to
the Covid-19 pandemic, Irish language lecturers at Dublin City University
(DCU) set asynchronous video assessment tasks for students on teacher
education programmes. Tasks were completed using the web-based Unicam
platform, which streamlines video creation and submission, allowing students
to focus on their task and not technical affairs. Students’ and the teaching
team’s Unicam experiences were evaluated through anonymous surveys drawing
on the Unified Theory of Acceptance and Use of Technology. Both parties were
neutral to slightly positive in their attitudes towards the Unicam
tool.
Inventario de Ansiedad de Beck: validez estructural y fiabilidad a través de distintos métodos de estimación en población argentina
Authors: Vizioli Nicolás Alejandro , Pagan Alejandro Emilio
Published: December 2021

La validez y fiabilidad como propiedades psicométricas consisten en complejos procesos que deben ser revisados constantemente para garantizar la correcta utilización de un instrumento de medición. Por tanto, en el presente estudio se indagó respecto a la validez estructural, la validez factorial y la fiabilidad del Inventario de Ansiedad de Beck (BAI) en su adaptación argentina, a partir de diferentes métodos en una muestra de 746 participantes (Medad = 33.49, DE = 10.55) pertenecientes a la ciudad de Buenos Aires y al conurbano Bonaerense, en Argentina. Específicamente, se realizaron análisis factoriales confirmatorios para probar los modelos de una, dos y cuatro dimensiones, utilizando los métodos de estimación de mínimos cuadrados no ponderados, máxima verosimilitud robusto, mínimos cuadrados ponderados diagonales, y mínimos cuadrados generalizados robusto. Adicional a esto, se indagó respecto a la fiabilidad de la prueba mediante el alfa, omega, glb algebraico y factorial, H, beta, y theta. Los resultados indican que el modelo unidimensional mostró mejores índices de bondad de ajuste independientemente del método de estimación; y que todos los índices de fiabilidad obtenidos fueron aceptables. Esta investigación aporta sólidas evidencias sobre la validez estructural y la fiabilidad del BAI.
Una aproximación al significado del amor en una población infantil en Lima, Perú
Authors: Ventura León José Luis , Sánchez Villena Andy Rick , Barboza Palomino Miguel , Curahua Guillén Karen , Oros Laura Beatriz
Published: December 2021

El presente estudio tuvo como objetivo aproximarse al significado del amor, a través de su expresión escrita, en una muestra de niños y niñas de Lima Metropolitana de Perú, y examinar sus diferencias según sexo y edad. En total, se contó con la participación de 289 individuos divididos en dos muestras: una muestra exploratoria (n = 50) y otra de confirmación (n = 239). El estudio siguió una metodología mixta, a partir del análisis temático como técnica cualitativa para identificar códigos subyacentes a la definición de amor de los niños, y del análisis clúster jerárquico como técnica cuantitativa para generar un dendrograma. Los resultados revelaron la presencia de seis categorías centrales: relación con otros significativos cercanos, romanticismo y amor propio, relación característica entre adultos, estado positivo, afectividad, y apoyo incondicional. A partir de ello, se concluye que el concepto de amor durante la niñez integra tres categorías del esquema interpretativo de las emociones: contextual o elicitador, experiencia subjetiva, y tendencia expresiva/motivacional.
Wielkopolskie Słowniki Regionalne – założenia leksykograficzne serii
Authors: Sierociuk Jerzy
Published: December 2021

Gwary wielkopolskie są najsłabiej udokumentowane leksykograficznie, toteż proponowana seria Wielkopolskie Słowniki Regionalne jest próbą nadrobienia tych zaległości. Ze względu na ograniczoną liczebność zespołu dialektologów (tylko 3 osoby) zdecydowano, że współpracować będziemy z różnymi środowiskami lokalnymi, szczególnie ze szkołami. Eksploracja terenowa o wyraźnym założeniu leksykograficznym zawężona jest do wybranego pola tematycznego, a specjalny kwestionariusz zawiera 600–800 specjalnie skonstruowanych pytań prowokujących rozmówców do dłuższych wypowiedzi; pożądane też są fotografie omawianych desygnatów. Identyczne tematycznie słowniki mają być przygotowane dla kilku regionów Wielkopolski – w zamierzeniu ma ich być 4–5 – co w dalszej perspektywie stwarza możliwości analiz komparatystycznych. Dopuszczamy ponadto możliwość zestawiania podobnych słowników także z różnych dialektów polskich jak i w kontekście slawistycznym. Słowniki mają mieć charakter popularnonaukowy, przez co rezygnujemy z zamieszczania informacji gramatycznych, etymologii itp. Wartość naukową dodatkowo akcentuje obecność jednostek leksykalnych istotnych w badaniach lingwistycznych, zarówno dotyczących języka polskiego jak i niektórych zależności slawistycznych. Przestrzegana jest zasada synchronii – podajemy datę rejestracji materiału w terenie, charakterystykę współczesnego stanu gwary oraz szkic o historii terenu i współpracującej szkoły.