Pesquisa | SciELO

Abstract: Eucalyptus planted forests contribute to maximizing lumber production but problems such as longitudinal growth strain can negatively influence the quality of the products. Knowing dendrometric variables and wood properties can help in the prediction of longitudinal growth strain, mainly with the help of artificial intelligence. Thus, the aim of this research was to evaluate the use of artificial neural networks to predict longitudinal growth strain in Eucalyptus trees based on dendrometric variables, spacing between trees and wood density. The longitudinal growth strain was measured in trees of four Eucalyptus clones planted in three spacings. The diameter and height of each tree were measured. The basic wood density was determined. Artificial neural networks were used to estimate longitudinal growth strain as a function of dendrometric variables, tree spacing and wood density. The results showed that the artificial neural networks presented good results for training and validation, with most of them resulting in high correlation coefficient values. The trained artificial neural networks showed a correlation coefficient above 0,56. Artificial neural networks showed that the variables clone and basic wood density were the ones that most contributed to the prediction of longitudinal growth strain. On the other hand, the spacing between trees, the height of the tree and the diameter at breast height were not relevant to predict growth stresses.

https://doi.org/10.4067/s0718-221x2023000100430

Whole-exome sequencing of oral epithelial dysplasia samples reveals an association with new genes
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ADORNO-FARIAS, Daniela

; SANTOS, Jean Nunes dos

; GONZÁLEZ-ARRIAGADA, Wilfredo

; TARQUINIO, Sandra

; SANTIBÁÑEZ PALOMINOS, Rodrigo Alberto

; MARTÍN MARTÍN, Alberto Jesus

; FERNANDEZ-RAMIRES, Ricardo

Brazilian Oral Research

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2023, Volume 37 elocation e016

Resumo: En | Texto: En | PDF: En

Abstract The genetic basis of oral epithelial (OED) is unknown, and there is no reliable method for evaluating the risk of malignant transformation. Somatic mutations are responsible for the transformation of dysplastic mucosa to invasive cancer. In addition, these genomic variations could represent objective markers of the potential for malignant transformation. We performed whole-exome sequencing of 10 OED samples from Brazilian and Chilean patients. Using public genetic repositories, we identified 41 deleterious variants that could produce high-impact changes in the amino acid structures of 38 genes. In addition, the variants were filtered according to normal skin and Native American genome profiles. Finally, 13 genes harboring 15 variants were found to be exclusively related to OED. High-grade epithelial dysplasia samples showed a tendency to accumulate highly deleterious variants. We observed that 62% of 13 OED genes identified in our study were also found in head and neck squamous cell carcinoma. Among the shared genes, eight were not identified in oral squamous cell carcinoma. To our knowledge, we have described for the first time 13 genes that are found in OED in a Latin American population, of which five genes have already been observed in oral squamous cell carcinoma. Through this study, we identified genes that may be related to basal biological functions in OED.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0016

Acinic cell carcinoma of the oral and maxillofacial region: an international multicenter study
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KIRSCHNICK, Laura Borges

; SILVEIRA, Felipe Martins

; SCHUCH, Lauren Frenzel

; VASCONCELOS, Ana Carolina Uchoa

; GOMES, Ana Paula

; SANTOS, Jean Nunes dos

; SANTANA, Dandara Andrade

; FONSECA, Felipe Paiva

; MESQUITA, Ricardo Alves

; MENDONÇA, Elismauro Francisco de

; SOUSA-NETO, Sebastião Silvério

; PONTES, Hélder Antônio Rebelo

; ROBINSON, Liam

; HEERDEN, Willie van

; CARLOS-BREGNI, Román

; TAGER, Elena María José Román

; SILVA, Luan César da

; ZANELLA, Virgílio Gonzales

; RIVERO, Luis Fernando

; BITTENCOURT, Raquel

; MARTINS, Marco Antonio Trevizani

; LOPES, Márcio Ajudarte

; WAGNER, Vivian Petersen

; VARGAS, Pablo Agustin

; MARTINS, Manoela Domingues

Brazilian Oral Research

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2023, Volume 37 elocation e050

Resumo: En | Texto: En | PDF: En

Abstract The aim of this study was to describe the prevalence, clinicopathological, and prognostic features of acinic cell carcinoma (AciCC) of the oral and maxillofacial region. AciCC cases were retrospectively retrieved from 11 pathology centers of three different countries. Medical records were examined to extract demographic, clinical, pathologic, and follow-up information. A total of 75 cases were included. Females (65.33%) with a mean age of 45.51 years were mostly affected. The lesions usually presented as an asymptomatic (64.28%) nodule (95.66%) in the parotid gland (70.68%). The association of two histopathological patterns was the most common finding (48.93%) and the tumors presented mainly conventional histopathological grades (86.11%). Surgical treatment was performed in the majority of the cases (59.19%). Local recurrence was observed in 20% of the informed cases, regional metastasis in 30.43%, and distant metastasis in 12.50%. The statistical analysis showed that the cases with a solid histopathological pattern (p=0.01), high-grade transformation (p=0.008), recurrence (p=0.007), and regional metastasis (p=0.03) were associated with poor survival. In conclusion, high histopathological transformation, presence of nodal metastasis, and recurrence were prognostic factors for AciCC of the oral and maxillofacial region.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0050

Genetic diversity and importance of agronomic traits in cowpea genotypes in conditions of low technological level in Piaui
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Santos, Jean Lucas Costa dos

; Leite, Wallace de Sousa

; Sousa, Adão Vinicius Abreu Rabelo de

; Lima, Williany Rego

; Diniz, Fabio Oliveira

; Lima, Gustavo Nobre

Revista Ceres

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2023, Volume 70 Nº 6 elocation e70605

Resumo: En | Texto: En | PDF: En

ABSTRACT The aim of the study was to evaluate the genetic diversity, agronomic traits and promising combinations of cowpea genotypes under conditions of low technological level in the region south of Piaui. The experiment was conducted in rainfed condition in the experimental area of the Federal Institute of Piauí, Uruçuí - PI, in DBC with four replications. We used 10 genotypes of commercial cultivars. The following variables were evaluated: Cycle; Number of pods /plants; Number of grains/pods; Weight of 100 grains and yield. The genetic divergence was obtained by Mahalanobis distance and clustering by UPGMA method. The genotypes BRS Tumucumaque, BRS Pajeú and BRS Guariba are promising for cultivation in the first crop under conditions of low technological level in the Cerrado region of Piauí. The combinations of genotypes BRS Tumucumaque and BRS Imponente, BRS Tumucumaque and BRS Aracê, BRS Guariba and BRS Imponente, BRS Guariba and BRS Aracê and BRS Pajeú and BRS Imponente have great potential for use in breeding programs to obtain promising segregating populations for grain yield and other attributes. The traits weight of 100 grains, cycle and number of grains per pod have the greatest contribution to the genetic diversity in the studied population.

https://doi.org/10.1590/0034-737x202370060005

Contribution of public oral pathology services to the diagnosis of oral and oropharyngeal cancer in Brazil
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LOUREDO, Brendo Vinicius Rodrigues

; CURADO, Maria Paula

; PENAFORT, Paulo Victor Mendes

; DE ARRUDA, José Alcides Almeida

; ABREU, Lucas Guimarães

; MESQUITA, Ricardo Alves

; PINTO-JÚNIOR, Décio dos Santos

; ABRAHÃO, Aline Corrêa

; ANDRADE, Bruno Augusto Benevenuto de

; AGOSTINI, Michelle

; MORAES, Renata Mendonça

; ANBINDER, Ana Lia

; DOURADO, Pedro Henrique Silva

; SANTOS, Teresa Cristina Ribeiro Bartholomeu dos

; PIRES, Fábio Ramoa

; BORDIGNON, Natalia Cristina Trentin

; GONDAK, Rogério Oliveira

; DE OLIVEIRA, Marcia Gaiger

; CARRARD, Vinicius Coelho

; MARTINS, Manoela Domingues

; SOUSA-NETO, Sebastião Silvério

; ARANTES, Diego Antônio Costa

; MENDONÇA, Elismauro Francisco

; CIESLAK-SANCHES, Silvia Roberta

; ANTUNES, Daniella Moraes

; AMARAL-SILVA, Gleyson Kleber do

; MANIERI, Patricia Rubia

; RAMALHO, Luciana Maria Pedreira

; DOS SANTOS, Jean Nunes

; LEONEL, Augusto César Leal da Silva

; PEREZ, Danyel Elias da Cruz

; VERHEUL, Hannah Carmem Carlos Ribeiro Silva

; BARROSO, Keila Martha Amorim

; RODRIGUES, Flávia Luiza Santos

; GONZAGA, Amanda Katarinny Goes

; FERNANDES, Romana Renery

; DE SOUZA, Lélia Batista

; SOUZA, Lucas Lacerda de

; PONTES, Flávia Sirotheau Corrêa

; PONTES, Hélder Antônio Rebelo

; SILVA, Caroline Alfaia

; CÂMARA, Jeconias

; LIBÓRIO-KIMURA, Tatiana Nayara

; SANTOS-SILVA, Alan Roger

; LOPES, Márcio Ajudarte

; ALMEIDA, Oslei Paes de

; ROMAÑACH, Mário José

; VARGAS, Pablo Agustin

Brazilian Oral Research

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2023, Volume 37 elocation e126

Resumo: En | Texto: En | PDF: En

Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients’ histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil’s Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0126

Rainfall increases gall morphological metrics in the Brazilian Cerrado
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Campos, Gabriela Bomfim Dias

; Venâncio, Henrique

; Santos, Jean Carlos

; Santos-Silva, Juliana

Acta Botanica Brasilica

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2023, Volume 37 elocation e20230173

Resumo: En | Texto: En | PDF: En

Abstract The shape of the galls can be adjusted by factors such as natural enemies and climatic conditions to which the galls are subjected. Studies that evaluate the climatic regime as a possible driver of the morphology of galls are scarce and do not consider Neotropical systems. To fill this knowledge gap, this study evaluated the influence of seasonality on the morphology of Cecidomyiidae galls induced on Myrcia neoobscura (Myrtaceae) growing in the Cerrado of Bahia. A total of 270 galls were sampled during the dry and rainy seasons. The average monthly precipitation was obtained. The galls were refrigerated, weighed, and measured within 72 h of collection. The average weight of the galls ranged from 0.106 g to 0.780 g; while, the volume ranged from 35.07 mm3 to 726.70 mm3 and the surface area from 20.03 mm2 to 719.57 mm2. The average weight, volume, and surface area of galls were approximately 50% higher during the rainy season than during the dry season. These three variables were also positively related to average precipitation. These results support the hypothesis that seasonality may contribute to the observed variation in the final shape of galls on a local scale.

https://doi.org/10.1590/1677-941x-abb-2023-0173

Survival of young and elderly adults with oral squamous cell carcinoma in a population in northeastern Brazil
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Amorim, Marília de Matos

; Pires, Alessandra Laís Pinho Valente

; Assis, Ana Letícia Marques de Souza

; Silva, Carlos Alberto Lima da

; Santos, Jean Nunes dos

; Freitas, Valéria Souza

Brazilian Journal of Oral Sciences

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2023, Volume 22 elocation e230008

Resumo: En | Texto: En | PDF: En

Aim To compare the profile and overall survival of young adults and elderly people diagnosed with SCC. Methods A retrospective study was carried out at a High Complexity Oncology Unit, between 2010 and 2016. A descriptive analysis, a bivariate analysis using the chi-square and Fisher’s exact test and the Kaplan-Meier estimator were performed. The predictor variables were tested using the log-rank test and those with statistical significance and the literature were maintained for the Cox regression model. Results 282 cases of SCC were recorded, with only 12.4% diagnosed in young adults. The profile was similar between groups, with the majority of cases of the disease occurring in males, smokers and alcohol consumers. The lesions predominantly located on the tongue and were diagnosed in an advanced stage of the disease, resulting in 35.7% of deaths. The median survival time was 30 months in the elderly and 31 months in young people. In the multivariate analysis, age was not statistically significant, only staging and treatment were predictors of reduced overall survival. Conclusion Tumor staging, and treatment were prognostic factors for the disease.

https://doi.org/10.20396/bjos.v22i00.8670008

The use of micronucleus assay in exfoliated oral cells in patients undergoing fixed orthodontic therapy: a systematic review with meta-analysis
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SOUZA, Daniel Vitor de

; TAKESHITA, Wilton Mitsunari

; CASTRO, Glaucia Monteiro de

; RENNO, Ana Claudia Muniz

; SANTOS, Jean Nunes dos

; RIBEIRO, Daniel Araki

Brazilian Oral Research

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2023, Volume 37 elocation e116

Resumo: En | Texto: En | PDF: En

Abstract The aim of this systematic review was to evaluate published papers regarding the micronucleus assay in oral mucosal cells of patients undergoing orthodontic therapy (OT). A search of the scientific literature was made in the PubMed, Scopus, and Web of Science databases for all data published until November, 2021 using the combination of the following keywords: “fixed orthodontic therapy,” “genetic damage”, “DNA damage,” “genotoxicity”, “mutagenicity”, “buccal cells”, “oral mucosa cells,” and “micronucleus assay”. The systematic review was designed according to the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Nine studies were retrieved. Some authors demonstrated that OT induces cytogenetic damage in oral mucosal cells. Out of the nine studies included, two were classified as strong, five as moderate, and two as weak, according to the quality assessment components of the Effective Public Health Practice Project (EPHPP). Meta-analysis data revealed no relationship between mutagenicity in oral cells and OT in different months of treatment. At one month, the SMD = 0.65 and p = 0.08; after three months of OT, the SMD = 1.21 and p = 0.07; and after six months of OT, the SMD = 0.56 and p = 0.11. In the analyzed months of OT, I2 values were >75%, indicating high heterogeneity. In summary, this review was not able to demonstrate that OT induces genetic damage in oral cells. The study is important for the protection of patients undergoing fixed OT, given that mutagenesis participates in the multi-step process of carcinogenesis.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0116

COMO OS TURISTAS PERCEBEM OS ATRIBUTOS DE ATRATIVOS TURÍSTICOS EM BONITO (MS)? UMA ANÁLISE CALCADA EM PRINCÍPIOS DA NETNOGRAFIA
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SILVA, MAURILIO BARBOSA DE OLIVEIRA DA

; MARIANI, MILTON AUGUSTO PASQUOTTO

; SANTOS, JEAN FLÁVIO DA SILVA

; ARRUDA, DYEGO DE OLIVEIRA

Turismo: Visão e Ação

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Jan 2022, Volume 24 Nº 1 Páginas 92 - 111

Resumo: Pt En Es | Texto: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO: O turista baseia cada vez mais suas percepções e decisões sobre um destino turístico através de textos, mapas, imagens e vídeos produzidos principalmente por outros turistas e disponibilizados na internet. Essas informações compõem o electronic word-of-mouth (eWOM) e são o alvo do presente artigo, que tem como objetivo analisar os principais atributos valorizados por turistas que teceram comentários no site TripAdvisor acerca de atrativos turísticos visitados na cidade de Bonito/MS − um relevante destino turístico do Estado de Mato Grosso do Sul e do Brasil. Para atingir tal propósito, conduziu-se uma pesquisa de abordagem qualitativa, com amostragem crítica e calcada em princípios da netnografia, além do uso do software Iramuteq para o processamento de dados. Verificou-se que os turistas valorizam atributos relacionados ao meio ambiente, corroborando a ênfase de Bonito/MS em atividades ligadas ao turismo de natureza e aventura, sobretudo com o elemento água ocupando posição de destaque para atração de turistas. Ademais, investigou-se como a figura do ‘guia’, o ‘preço’ e as atividades de lazer praticadas na região impactaram na avaliação geral dos turistas.

ABSTRACT: The tourist increasingly bases his perceptions and decisions about a tourist destination through texts, maps, images, and videos produced mainly by other tourists and made available on the internet. This information is part of the electronic word-of-mouth (eWOM) and is the target of this article, which aims to analyze the main attributes valued by tourists who commented on the TripAdvisor website about tourist attractions visited in the city of Bonito/MS - a relevant tourist destination in the State of Mato Grosso do Sul and Brazil. To achieve this purpose, qualitative research was conducted, with critical sampling and based on principles of netnography, in addition to the use of the Iramuteq software for data processing. It was found that tourists value attributes related to the environment, corroborating the emphasis of Bonito/MS in activities related to nature and adventure tourism, especially with the water element occupying a prominent position to attract tourists. In addition, it was investigated how the figure of the ‘guide’, ‘price’ and leisure activities practiced in the region impacted the general assessment of tourists.

RESUMEN: Los turistas basan cada vez más sus percepciones y decisiones sobre un destino turístico a través de textos, mapas, imágenes y videos producidos principalmente por otros turistas y disponibles en Internet. Estas informaciones componen el boca a boca electrónico (eWOM) y son el objeto de este artículo, que tiene como objetivo analizar los principales atributos valorados por los turistas que comentaron en el sitio web de TripAdvisor sobre los atractivos turísticos visitados en la ciudad de Bonito/MS - un Destino turístico relevante en el Estado de Mato Grosso do Sul y en Brasil. Para lograr este propósito, se realizó una investigación de enfoque cualitativo, con muestreo crítico y basado en los principios de la netnografía, además del uso del software Iramuteq para el procesamiento de datos. Se encontró que los turistas valoran atributos relacionados con el medio ambiente, corroborando el énfasis de Bonito/MS en las actividades relacionadas con el turismo de naturaleza y aventura, especialmente con el elemento agua ocupando un lugar destacado para la atracción de turistas. Además, se investigó cómo la figura del ‘guía’, el ‘precio’ y las actividades de ocio que se practican en la región impactan en la valoración general de los turistas.

https://doi.org/10.14210/rtva.v24n1.p92-111

10.

Innovation in Pharmaceutical Assistance
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Santos, Jean Leandro Dos

Brazilian Journal of Pharmaceutical Sciences

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2022, Volume 58 elocation e19724

Resumo: En | Texto: En | PDF: En

Abstract Innovation is the driving force that is able to create and transform products, processes, and organization in the health system. Innovation in the field of pharmaceutical assistance covers a wide spectrum of aspects, from drug discovery to pharmaceutical care, contributing to the improvement in treatments through novel drugs or methods. This work will present the major characteristics of innovation with special emphasis on aspects pertaining to pharmaceutical assistance. The types and models of innovation, as well as the interaction between academia and industry, will be presented with examples of successful products and methods. In addition, the challenges and perspectives for innovation in pharmaceutical assistance will be discussed with a focus on drug discovery.

https://doi.org/10.1590/s2175-97902022e19724

11.

Prejudice against sexual and gender diversity and beliefs about sex education among university students
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SANTOS, Jean Jesus

; CERQUEIRA-SANTOS, Elder

Estudos de Psicologia (Campinas)

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2022, Volume 39 elocation e200017

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo A discriminação de minorias sexuais e de gênero é um problema persistente em diversos contextos. Neste artigo buscou-se investigar preconceito contra diversidade sexual e de gênero e crenças sobre educação sexual entre estudantes de cursos de licenciatura de áreas distintas e se há diferenças nas manifestações dessas atitudes e crenças entre ingressantes e concludentes. Participaram deste estudo 580 estudantes universitários e os dados foram coletados através de escalas para medir preconceito sexual e de gênero e crenças sobre educação sexual e de uma ficha de caracterização sociodemográfica. Os resultados mostraram que os índices de preconceito e de crenças variaram por área e foram observadas diferenças nas médias de crenças, mas não nas de preconceito, entre ingressantes e concludentes. Ressalta-se a importância de que haja mais investimentos voltados à conscientização dos estudantes de graduação para que, ao concluírem seus respectivos cursos, apresentem menores níveis desse tipo de preconceito.

Abstract Discrimination against sexual and gender minorities is a persistent problem in several contexts. This article sought to investigate prejudice against sexual and gender diversity and beliefs about sex education among students of licenciatura (Brazilian term for a bachelor of education degree with a specialization) courses from different areas, and whether there are differences in the manifestation of these attitudes and beliefs between freshmen and seniors. Five hundred eighty university students participated in this study and the data was collected through scales to measure sexual and gender prejudice and beliefs about sex education, and through a sociodemographic characterization form. The results showed that prejudice and belief indices varied by area of study and differences were observed in the mean values of beliefs, but not in those of prejudice, between freshmen and seniors. The importance of more investments is emphasized so that undergraduate students present lower levels of this type of prejudice when completing their respective courses.

https://doi.org/10.1590/1982-0275202239e200017

12.

Differential protein expression of osteoclastogenic factors in odontogenic cysts and tumors
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Almeida Junior, Vildeman Rodrigues de

; Leite, Eder Gerardo Santos

; Almeida, Marcus Vinicius

; Castro, Jurema Freire Lisboa de

; Freitas, Roseana de Almeida

; Xavier, Flávia Caló Aquino

; Figueiredo, Andreia Leal

; Santos, Jean Nunes

; Henriques, Águida Cristina Gomes

Brazilian Oral Research

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2022, Volume 36 elocation e072

Resumo: En | Texto: En | PDF: En

Abstract: The osteolytic activity of odontogenic cysts and tumors is directly associated with their growth and aggressiveness. The influence of proteins expressed by epithelial and mesenchymal cells on this biological event differs between indolent cystic lesions, aggressive cystic lesions, and odontogenic tumors. The objective of this study was to compare the immunohistochemical expression of factors that stimulate (receptor activator of nuclear factor kappa-Β ligand – RANKL, cathepsin K – CatK and matrix metallopeptidase 8 – MMP-8) and inhibit (osteoprotegerin – OPG) osteoclastogenesis between dentigerous cyst (DC), glandular odontogenic cyst (GOC), odontogenic keratocyst (OKC), and ameloblastoma (AB). Paraffin-embedded sections of nine DCs, nine GOCs, 20 OKCs, 21 ABs, and four dental follicles (DFs) were subjected to immunohistochemistry. Immunoreactivity was analyzed semiquantitatively and quantitatively in epithelium and connective tissue, respectively. The proteins were immunoexpressed in epithelial and mesenchymal cells of all lesions studied. The expression of RANKL and CatK was higher in OKC, AB, and GOC (p<0.005). Higher expression of OPG was found in DF and DC compared to the other markers (p<0.005). MMP-8 expression was high in GOC and OKC. This study demonstrated the differential expression of factors that inhibit and stimulate bone resorption during the development of DC, GOC, OKC, and AB. Higher expression of RANKL and CatK was observed in more aggressive lesions. OPG appears to be one of the molecules responsible for the slower growth of DC.

https://doi.org/10.1590/1807-3107bor-2022.vol36.0072

13.

Long term dental transversal stability of Class II division 1 treated with cervical headgear
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OLIVEIRA, Márcio Bastos de

; SANTOS, Jean Nunes dos

; LIMA, Vanessa Mascarenhas

; FONTE, Tiago Fonseca Lima da

; ARAUJO, Telma Martins de

; VOGEL, Carlos Jorge

; RÊGO, Emanuel Braga

Dental Press Journal of Orthodontics

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2022, Volume 27 Nº 2 elocation e2220291

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Introdução: Em várias condições, a estabilidade dos resultados é um grande desafio para a Ortodontia. Estudos prévios relataram que a recidiva ocorre, comumente, ao longo dos anos, após o término do tratamento ortodôntico. Objetivo: O objetivo da presente pesquisa foi avaliar as alterações transversais da arcada dentária em longo prazo de pacientes Classe II, divisão 1, tratados com aparelho extrabucal cervical e aparelho fixo. Métodos: Modelos de gesso de 20 pacientes tratados com AEB cervical, sem extrações dentárias, foram escaneados e avaliados em três momentos distintos: inicial (T1), pós-tratamento imediato (T2) e acompanhamento de longo prazo (T3, mínimo de 20 anos). A distância transversal entre os caninos superiores e inferiores, pré-molares e primeiros molares foi medida. Resultados: Foi observado aumento estatisticamente significativo durante o tratamento para todas as distâncias transversais dos dentes superiores (p < 0,05). Por sua vez, foi observada redução significativa em longo prazo (p < 0,05). Para os dentes inferiores, a distância transversal intercaninos apresentou constrição estatisticamente significativa no período de contenção (p < 0,05). A distância dos primeiros molares inferiores aumentou significativamente com o tratamento (p < 0,05) e permaneceu estável em longo prazo. As alterações observadas para os outros dentes ou outros tempos foram consideradas sem significância estatística. Conclusões: Para a amostra estudada, as alterações transversais ocorreram durante as fases de tratamento e contenção em pacientes Classe II, divisão 1, tratados com aparelho extrabucal de tração cervical e aparelho fixo. A recidiva foi considerada estatisticamente significativa, mesmo com a instituição de um protocolo de contenção.

ABSTRACT Introduction: In several conditions, outcome stability is a great challenge for Orthodontics. Previous studies have reported that relapse commonly occurs along the years after orthodontic treatment finishing. Objective: The aim of the present study was to evaluate in the long-term transversal dental arch changes of Class II division 1 patients treated with cervical headgear and fixed appliance. Methods: Plaster study casts of 20 patients treated with cervical headgear without dental extractions were 3D-scanned and evaluated in three distinct times: initial (T1), immediate post-treatment (T2) and long-term retention (T3 - minimum 20 years). Transversal teeth distance of maxillary and mandibular canines, premolars and first molars were measured. Results: A statistically significant increase during treatment was observed for all maxillary teeth transversal distances (p< 0.05). In turn, a significant reduction was observed in the long term (p<0.05). For the mandibular teeth, canine transversal distance presented statistically significant constriction in the retention period (p<0.05). Mandibular first molars distance was significantly expanded by treatment (p<0.05) and remained stable in the long term. The changes observed for the other teeth or other times were considered not statistically relevant. Conclusions: For the accessed sample, transversal changes occurred during treatment and retention phases in Class II division 1 patients treated with cervical headgear and fixed appliance. Relapse was considered statistically relevant, even with the institution of a retention protocol.

https://doi.org/10.1590/2177-6709.27.2.e2220291.oar

14.

Assessment of the relationship between tooth inclination and gingival and alveolar bone dimensions using computed tomography of the maxillary anterior teeth: a cross-sectional study
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MONTANHA-ANDRADE, Katia

; CRUSOÉ-REBELLO, Ieda Margarida

; BARRETO, Mauricio

; NEVES, Frederico Sampaio

; SANTOS, Jean Nunes dos

; CURY, Patricia Ramos

Dental Press Journal of Orthodontics

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2022, Volume 27 Nº 4 elocation e222136

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo: O presente estudo teve como objetivo investigar a relação entre a inclinação dentária e as dimensões ósseas e gengivais em dentes anteriores superiores. Métodos: Esse estudo transversal incluiu imagens de tomografia computadorizada de feixe cônico (TCFC) de 160 dentes anteriores superiores divididos em três grupos (incisivo central, incisivo lateral e canino). Todos os pacientes tinham 18 anos ou mais, não tinham tratamento ortodôntico prévio nem história clínica que pudesse afetar as dimensões ósseas ou gengivais. A inclinação dentária, a espessura do osso e da gengiva e as distâncias da junção cemento-esmalte à crista óssea alveolar e à margem gengival foram medidas na face vestibular. As correlações foram analisadas por meio dos testes de Pearson e de correlação parcial (p≤0,05). Resultados: Nos incisivos centrais, a inclinação dentária foi positiva e significativamente relacionada à espessura do osso apical (R = 0,34, p= 0,001). Nos caninos, a inclinação dentária foi negativa e significativamente relacionada à espessura do osso cervical (R = - 0,34, p= 0,01) e positivamente associada à espessura do osso apical (R = 0,36, p= 0,01) e à distância entre a margem gengival e a junção cemento-esmalte (R = 0,31, p= 0,03). Nos incisivos laterais, a inclinação do dente não foi associada às dimensões do osso ou da gengiva. Conclusões: Nos incisivos centrais, quanto maior a inclinação vestibular do dente, maior a espessura do osso apical. Nos caninos, quanto maior a inclinação vestibular do dente, menor a espessura do osso cervical, maior a espessura do osso apical e maior a margem gengival. As dimensões ósseas e gengivais devem ser avaliadas ao se planejar o tratamento ortodôntico envolvendo a movimentação vestibular dos incisivos centrais e caninos.

ABSTRACT Objective: The present study aimed to investigate the relationship between tooth inclination and gingival and bone dimensions in maxillary anterior teeth. Methods: This cross-sectional study included cone-beam computed tomography (CBCT) images of 160 maxillary anterior teeth (30 individuals). Tooth inclination, gingival and bone thickness, and distances from cementoenamel junction to alveolar bone crest and gingival margin were measured in the labial surface. The correlations were analyzed using Pearson and partial correlation tests (p≤0.05). Results: In the central incisors, tooth inclination was positively and significantly related to apical bone thickness (R = 0.34, p= 0.001). In the canines, tooth inclination was negatively and significantly related to cervical bone thickness (R = - 0.34, p= 0.01) and positively associated to apical bone thickness (R = 0.36, p= 0.01) and to gingival margin-cementoenamel junction distance (R = 0.31, p= 0.03). In the lateral incisors, tooth inclination was not associated with gingival or bone dimensions. Conclusions: In the central incisors, the greater the labial tooth inclination, the greater is the apical bone thickness. In the canines, the greater the labial tooth inclination, the smallest is the cervical bone thickness, the greater is the apical bone thickness, and the greater is the gingival margin. Gingival and bone dimensions should be assessed when planning orthodontic treatment involving buccal movement of central incisors and canines.

https://doi.org/10.1590/2177-6709.27.4.e222136.oar

15.

Dragonflies and Damselflies in a region of the Triângulo Mineiro, Minas Gerais: checklist and taxonomic additions
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Venâncio, Henrique

; Vilela, Diogo Silva

; Barbosa, Marcela Silva

; Santos, Jean Carlos

Biota Neotropica

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2021, Volume 21 Nº 3 elocation e20201182

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo: Os sistemas remanescentes de água doce estão historicamente ameaçados, principalmente devido às atividades humanas, como agricultura e urbanização. As consequências de tais atividades são inúmeras, e entre elas há a diminuição de habitats adequados para a fauna ameaçada. No cerrado brasileiro, a odonatofauna de veredas e matas ripárias ainda são pouco exploradas, fato que dificulta os esforços de conservação do grupo. Assim, realizamos um inventário em diversos pontos urbanos e rurais com essas fitofisionomias em Uberlândia, na região do Triângulo Mineiro, oeste de Minas Gerais. No total, foram encontradas 101 espécies de Odonata, sete famílias e 46 gêneros no município, com 76 e 66 espécies, respectivamente, pertencentes a pontos de veredas e de matas. Dessa diversidade, oito espécies foram os primeiros registros no estado de Minas Gerais: Neuraeschna claviforcipata Martin, 1909, Phyllocycla cf. medusa Belle, 1988, Diastatops intensa Montgomery, 1940, Oligoclada pachystigma Karsch, 1890, O. xanthopleura Borror, 1931, Angelagrion nathaliaeLencioni, 2008, Telebasis sanguinalis Calvert, 1909 e Telebasis simulacrum (Calvert, 1909). Nós também coletamos Erythrodiplax anaGuillermo-Ferreira & Vilela 2016, uma espécie listada como em perigo (EN) pela lista vermelha da IUCN. Além disso, incluímos algumas notas taxonômicas de fêmeas de Forcepsioneura machadorum, uma espécie recém-descoberta na região. Nossos resultados contribuem para o banco de dados Odonata no Brasil e destacam a importância dos inventários em ecossistemas aquáticos pouco explorados.

Abstract: Remaining freshwater systems are historically under threat mainly due to human activities such as agriculture and urbanization. The consequences of such activities are innumerous, and among them there is a decrease of suitable habitats for threatened fauna. In the Brazilian Cerrado, the odonatofauna of palm swamps and riparian forests are still poorly explored, a fact that difficult conservation efforts of the group. Thus, we performed an inventory in several urban and rural sites containing these phytophysiognomies in Uberlândia, Triângulo Mineiro region, western Minas Gerais state. In total, we found 101 Odonata species, seven families and 46 genera in the municipality, with 76 and 66 species, respectively, belonging to palm swamp and forest sites. From this diversity, eight species were first records in the state of Minas Gerais: Neuraeschna claviforcipata Martin, 1909, Phyllocycla cf. medusaBelle, 1988, Diastatops intensa Montgomery, 1940, Oligoclada pachystigma Karsch, 1890, O. xanthopleura Borror, 1931, Angelagrion nathaliaeLencioni, 2008, Telebasis sanguinalis Calvert, 1909 and Telebasis simulacrum (Calvert, 1909). We also sampled Erythrodiplax anaGuillermo-Ferreira & Vilela 2016, a species listed as endangered (EN) by the IUCN red list. Additionally, we include some taxonomic notes of Forcepsioneura machadorum females, a newly discovered species in the region. Our results contribute to the Odonata database in Brazil and highlights the importance inventories in poorly explored aquatic ecosystems.

https://doi.org/10.1590/1676-0611-bn-2020-1182 332 downloads

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