Evaluation of characteristics of periodontal probes

Aim: This study aimed to evaluate the millimeter distances and active tip diameters of different periodontal probes. Methods: Two types of periodontal probes were analyzed (North Carolina (15-UNC) and PCP-12). Two manufacturers were selected for each probe type. Digital images of the probes were obtained and the distances were measured using a software program. The diameter of the active tip was measured using a digital caliper. Both variables were measured by two trained and calibrated examiners. The data were analyzed using the Bland-Altman method and two-way ANOVA with Tukey's post-hoc test. Statistical significance was set at p<0.05. Results: A comparison of measurements between the 15UNC and PCP-12 probes showed a significant difference in all millimeter markings. The 15-UNC probe showed differences between the 3 and 12 mm markings. The PCP-12 probe only showed differences between the marks at the 12 mm mark. The 15-UNC probe had a similar active tip diameter between the two manufacturers. The PCP-12 probe showed a significant difference between the two manufacturers. Both types of probes had similar active tip diameters when compared by the two manufacturers. Conclusion: There was no standardization in relation to millimeter marks and tip diameters of the two types of periodontal probes produced by the two different manufacturers. The probe types exhibited little variability

Covid-19: um resgate bibliográfico sobre práticas exitosas na prevenção de lesões por pressão / COVID-19: A Bibliography Review on Successful Practices in Pressure Injuries Prevention / COVID-19: Un Rescate Bibliográfico sobre PrácticasExitosas en la Prevención de Lesiones por Presión

Introdução:Em dezembro de 2019 na China, o SARS-CoV-2 foi identificado e declaradocomopandemiapelaOrganização Mundial da Saúde.Suatransmissibilidade entrehumanos e evoluçãocomestabilidade clínicaehemodinâmica, aumentam o risco dodesenvolvimento delesões por pressãonos pacientes mais críticos.Objetivo:Identificar os principais cuidados hospitalares para manter a integridade da pele nos pacientes com COVID-19propensos a lesão por pressão. Metodologia:Estudo descritivo do tipo revisão integrativa realizado nas bases: Literatura Latino-Americana de Ciências da Saúde, Base de Dados de Enfermagem,Scientific Eletronic Library OnlineeBiblioteca Nacional de Medicina dos Estados Unidoscom osdescritores COVID-19, Lesão por pressão, Assistência ao pacienteePadrões de referência. Os critérios de inclusãoforamtextos completosdisponíveis gratuitamente, publicados entre 2019 e2021, que compartilhassem da temáticaem adultos e/ou idosos.Foramexcluídos artigos incompletos,plataformas pagas, cartae notas editor, reflexões e os artigos duplicados foram contabilizados uma vez, o idioma de origem não foi fator excludente.Resultados:Foram identificados 398 artigos potencialmente relevantes e 7 foram selecionados. As principais práticas relacionadas a prevenção de lesões por pressão em pacientes com COVID-19 apontamintervenções como o uso de checklist, avaliação periódica da pele,definiçãodo risco de desenvolvimento de lesão por pressão, mudança de decúbito conforme tolerância do paciente, uso de superfície para redistribuição de peso, cobertura profilática multicamadase controle da umidade da pele. Conclusões:As principais práticasparaevitar aslesões por pressãonos pacientes com COVID-19 no ambiente hospitalarestãoassociadas como cuidado direto ou indiretamente ligados a pele,adoção de medidas preventivas e sistemáticas dentro da realidade clínica e hemodinâmica dos pacientes (AU).

Introduction:In December 2019, in China, SARS-CoV-2 virus was identified and a pandemic was declared by the World Health Organization. Its transmissibility among humans and evolution with clinical and hemodynamic stability increases the risk of developingpressure injuries in the most critical patients.Objective:To identify the main hospital care to maintain skin integrity in COVID-19patients prone to pressure injuries.Methodology:A descriptive study of integrative review carried out in the following bases: Latin-American Health Sciences Literature, Nursing Database, Scientific Electronic Library Online and the National Library of Medicine of the United States, with the descriptors COVID-19, Pressure Injuries, Patient Care and Benchmarks. Inclusion criteria were full texts available for free, published between 2019 and 2021, which shared the subject matter in adults and/or elderly people. Incomplete articles, paid platforms, editor'sletter and notes, and reflections were excluded; duplicate articles were counted once. The source language was not an excluding factor.Results:398 potentially relevant articles were identified, 7 were selected. The main practices related to the prevention of pressure injuries in patients with COVID-19 point to interventions such as the use of checklists, periodic skin assessment, definition of the risk of developing pressure injuries, change of decubitus according to the patient's tolerance, use of surface for weight redistribution, multi-layer prophylactic coverage and skin moisture management.Conclusions:The main practices to avoid pressure injuries in patients with COVID-19in the hospital environment are associated with care directly or indirectly linked to the skin, adoption of preventive and systematic measures within the clinical and hemodynamic reality of patients (AU).

Introducción: Endiciembre de 2019, en China, el SARS-CoV-2 fue identificado y declarado pandemia por laOrganización Mundial de la Salud. Su transmisibilidad entre humanos y la evolución conestabilidad clínica yhemodinámica aumentan el riesgo de desarrollar lesiones por presión en lospacientes más críticos. Objetivo:Identificar los principales cuidados hospitalarios para mantener la integridad de la piel en pacientes con COVID-19propensos a lesiones por presión. Metodología:Estudio descriptivo del tipo "revisiónintegradora" realizado em las bases de datos: Literatura Latinoamericana de Ciencias de la Salud, Base de Datos de Enfermería, ScientificEletronic Library Online (Biblioteca Electrónica Científica en Línea) y Biblioteca Nacional de Medicina de los EstadosUnidos con los identificadores COVID-19, Lesión por Presión, Atención al Paciente y Estándares de Referencia. Loscriterios de inclusión fueron textos completos disponiblesde forma gratuita, publicados entre el 2019 y 2021, quecompartieron el tema en adultos y/o ancianos.Se excluyeronlos artículos incompletos, las plataformas pagadas,las cartas y las notas del editor y las reflexiones. Los artículos duplicados se contaron una vez. El idioma de origenno fue un factor de exclusión. Resultados:Se identificaron un total de 398 artículos potencialmente relevantes, 7fueron seleccionados. Las principales prácticasrelacionadas con la prevención de lesiones por presión em pacientes con COVID-19 apuntan a intervenciones como el uso de checklist, evaluación periódica de la piel,riesgo de lesión por presión, cambio de decúbito según tolerancia del paciente, uso desuperficie para redistribución de peso, cobertura profiláctica multicapa y control de la humedad de la piel.Conclusiones:Lasprincipales prácticas para evitar lesiones por presión en pacientes con COVID-19 en el ámbitohospitalario se asocian con cuidados directa o indirectamente vinculados a la piel, adopción de medidaspreventivas y sistemáticas dentro de la realidad clínica y hemodinámica de los pacientes (AU).

Morphometric evaluation of multirooted artificial teeth used for endodontic training / Avaliação morfométrica de dentes artificiais polirradiculares utilizados para treinamento endodôntico

Introduction Dental practice professionals encounter several urgency cases, mainly related to endodontic problems. To attend to these, professionals need extensive prior preclinical training, being one of the main difficulties the search for models that simulate dental morphology. Aim To compare the external morphometry of multirooted artificial teeth to literature. Material and method The artificial teeth (Upper First Premolar, Upper First Molar and Lower First Molar) were donated by the manufacturers: Fábrica de Sorrisos (FS) and IM do Brasil LTDA (IM), totaling 30 teeth. The total length of the tooth and root, height and buccal-palatal and mesial-distal dimensions of the crown were measured with a digital pachymeter. The data were placed in a spreadsheet and the statistical analysis was performed [ANOVA or Kruskal-Wallis and then, Dunnett's test (α=5%)]. Result The Upper Molar samples of the company Fábrica de Sorrisos presented all variables within the morphometric patterns described in the literature. The other dental groups presented statistically significant differences, maintaining or not a certain proportionality. Conclusion Of all the dental groups analyzed, the upper molar from the company Fábrica de Sorrisos was the only one that presented all the external morphometric aspects according to literature.

Introdução Dentro da prática odontológica, os profissionais podem receber diversos casos de urgência, principalmente relacionados a problemas endodônticos e, para atendê-los, há a necessidade de um extenso treinamento pré-clínico prévio, sendo uma das principais dificuldades a busca por modelos que simulem a morfologia dentária. Objetivo Comparar a morfometria de dentes artificiais polirradiculares à literatura. Material e método Os dentes artificiais (Primeiro Pré-molar Superior, Primeiro Molar Superior e Primeiro Molar Inferior) foram doados pelos fabricantes: Fábrica de Sorrisos (FS) e IM do Brasil Ltda. (IM), totalizando 30 dentes. Foi realizada mensuração do comprimento total do dente e o da raiz, da altura e das dimensões vestíbulo-palatina e mésio-distal da coroa, com paquímetro digital. Os dados foram dispostos em uma planilha de cálculo e realizou-se a análise estatística [ANOVA ou Kruskal-Wallis e, após, teste de Dunnett (α=5%)]. Resultado A amostra de molares superiores da empresa FS apresentou todas as variáveis dentro dos padrões morfométricos descritos na literatura. Os demais grupos dentários apresentaram diferenças estatisticamente significantes, mantendo ou não certa proporcionalidade. Conclusão De todos os grupos dentários pesquisados o molar superior da empresa FS foi o único que apresentou todos os aspectos morfométricos externos de acordo com os dados da literatura.

Age estimation in Brazilian adults by Kvaals and Camerieres methods

Abstract The aim of this study was to verify the precision and applicability of two methods of age estimation, Kvaal's and Cameriere's methods, among Brazilian adults. A sample composed of periapical radiographs of canine teeth belonging to 320 Brazilian adults was analyzed, divided into groups according to sex (male and female) and age group (20-29 years, 30-39 years, 40-49 years and 50-59 years). Kvaal's method presented better results when compared to the results of Cameriere's method in the general evaluation of each canine tooth, except for the upper left canine (tooth 23), which presented a mean error (ME) with no statistically significant difference between the methods (Kvaal: ME = 7.43, p = 0.4991, Cameriere: ME = 7.55, p = 0.6982). In the evaluation by age groups, Kvaal's method presented a lower variation between the real age and estimated age when applied to the age groups of 20-29 years and 30-39 years compared to the results provided by Cameriere's method. With respect to the groups aged 40 to 49 years and 50 to 59 years, Cameriere's method presented better performance than the results provided by Kvaal's method. The methods of estimating age proposed by Kvaal and Cameriere are simple and nondestructive and have demonstrated reproducibility and reliability. The Kvaal method was more accurate for the age groups of 20-29 and 30-39 years, and for those over 40 years, the Cameriere method was the most accurate.

International classification of functioning in professional rehabilitation: instruments for assessing work disability / Classificação internacional de funcionalidade na reabilitação profissional: instrumentos de avaliação da incapacidade laboral

ABSTRACT OBJECTIVE To review the main instruments of functional assessment and health status cited in the literature to evaluate Brazilian workers and verify the compatibility of their items with the core set for professional rehabilitation. METHODS A review of the literature was conducted in the main databases in search of articles that used assessment instruments in populations of workers between 2007 and 2017. Subsequently, the contents of the identified instruments were retrieved, and two evaluators analyzed their items to verify the compatibility with the categories of the core set of the International Classification of Functioning for professional rehabilitation. Cohen's kappa coefficient was used to evaluate the agreement between the evaluators. RESULTS Five specific and eight generic instruments were selected to evaluate the functioning of workers. The analysis of the items of the total instruments allowed the definition of 58 categories (64.5%) of the core set with minimal overlap: 13 (76.5%) of the body functions component, 29 (72.5%) of the activities and participation component and 16 (49%) environmental factors. CONCLUSIONS The association of several instruments requires time and makes it difficult to use the classification. The development of instruments with direct association with its categories is essential to operationalize it.

RESUMO OBJETIVO Revisar os principais instrumentos de avaliação funcional e situação de saúde citados na literatura para avaliar trabalhadores brasileiros e verificar a compatibilidade de seus itens com o core set para reabilitação profissional. MÉTODOS Foi realizada uma revisão da literatura nas principais bases de dados em busca de artigos que utilizaram instrumentos de avaliação em populações de trabalhadores entre 2007 e 2017. Posteriormente foram recuperados os conteúdos dos instrumentos identificados e dois avaliadores analisaram seus itens para verificar a compatibilidade com as categorias do core set da Classificação Internacional de Funcionalidade para reabilitação profissional. O coeficiente kappa de Cohen foi utilizado para avaliar a concordância entre os avaliadores. RESULTADOS Foram selecionados cinco instrumentos específicos e oito genéricos que avaliaram a funcionalidade de trabalhadores. A análise dos itens do total de instrumentos permitiu o preenchimento de 58 categorias (64,5%) do core set com o mínimo de sobreposição: 13 (76,5%) do componente funções corporais, 29 (72,5%) do componente de atividades e participação e 16 (49%) de fatores ambientais. CONCLUSÕES A associação de vários instrumentos requer tempo e dificulta o uso da classificação. A elaboração de instrumentos com associação direta às suas categorias se faz essencial para operacionalizá-la.

Estudo queiloscópico em graduandos da Faculdade de Odontologia de Pernambuco: estudo-piloto / Study cheiloscopy in undergraduate of the Faculdade de Odontologia de Pernambuco: pilot study

Esse estudo teve como objetivo identificar e classificar os sulcos das impressões labiais obtidas, e estabelecer relação entre os tipos de sulcos presentes nas impressões labiais e o fenótipo cor da pele e o sexo. A amostra foi composta por 60 estudantes de graduação do curso de Odontologia, de ambos os sexos. Para determinação e classificação dos sulcos labiais (Tipos I, I', II, III, IV e V), fez-se uso de amostras individuais de batons para tomada das impressões em suporte de cartolina branca. O sulco labial mais comum encontrado foi o Tipo I, seguido pelo Tipo II e pelo Tipo I'. Nos sexos feminino e masculino, o Tipo I e Tipo II foram os padrões dominantes. Os sulcos do Tipo II e I` foram predominantes em melanodermas; nos faiodermas e leucoderma, no entanto, os padrões predominantes foram os Tipos I e II. Pode-se concluir que a análise da impressão labial tem o potencial para o reconhecimento do gênero de um indivíduo, embora requeira um estudo detalhado para a realização correta do queilograma... (AU)

The aim of this study was to identify and classify the grooves of lip prints obtained, and establish a relationship between the types of labial grooves present on the prints and the phenotype of skin color and gender. The sample consisted of 60 graduate students, of both sexes. For determination and classification of lip grooves (Types I, I', II, III, IV and V), individual lip printing taken from lipsticks on white cardboard were used. The most common labial groove found, according to the classification proposed by Suzuky and Tsuchihaschi (1970), was type I, followed by Type II and Type I'. In females and in males, Type I and II were the dominant patterns. The grooves of the type II and I' were prevalent in melanoderm, in faioderm and in Caucasian the predominants patterns were types I and II. It can be concluded that lip print analysis has the potential for the recognition of the gender of an individual, but requires a detailed study to correctly perform the cheilogram... (AU)

Plasma rico em plaquetas de ratos wistar / Platelet-rich plasma of wistar rats

Uma das biotecnologias com propósito relevante à saúde humana é o plasma rico em plaquetas (PRP) o qual, não há registro protocolar padronizado para Rattus novergicus (Wistar). De fato, a falta de padronização do método leva pesquisadores à dúvida sob qual protocolo seguir para os melhores resultados referente as concentrações e mudanças morfológicas plaquetárias. Tal indeterminação promove morosidade nas pesquisas científicas. Frente a conjectura, usou-se o mínimo de animais possíveis em experimentação duplo-cego, retirando-se 3,2 mL de sangue de cada animal por pulsão cardíaca o qual posteriormente, foi testado em três protocolos distintos. Cada protocolo foi designado como P1; P2; P3 e o grupo controle designado PSP. Desta forma, i. P1 foi submetido a uma única centrifugação de 160G por 6min resultando em 100 µL de PRP; ii. P2 foi resignado a dupla centrifugação sendo a primeira etapa 160G por 20min e a segunda etapa 400G por 15 min, resultando em 100 µL de PRP e iii. P3 destinado a dupla centrifugação sendo a primeira etapa 300G por 10 min e a segunda etapa 640G por 10 min, resultando em 100 µL de PRP. Obtivemos maiores concentrações plaquetárias dos protocolos P2 e P3 com concentrações superiores a 519%. Quanto a visualização morfológica plaquetária por esfregaço, os três protocolos apresentaram boa visualização, no entanto P3 sobressaiu-se aos demais quanto ao tempo global de preparo e menor inclusão eritrocitária. Assim, padronizamos um modelo animal in vivo para futuras investigações científicas interessadas na utilização do PRP de Rattus novergicus (Wistar)(AU)

One of the biotechnologies with a relevant human health purpose is platelet rich plasma (PRP), which has no standardized protocol record for Rattus novergicus (Wistar). In fact, the lack of standardization of the method leads researchers to doubt which protocol to follow for the best results regarding platelet concentrations and morphological changes. Such indeterminacy promotes slowness in scientific research. In view of the conjecture, how few animals were used in a double-blind experiment and 3.2 mL of blood was drawn from each animal by heartbeat and subsequently tested in three separate protocols. Each protocol was designated as P1; P2; P3 is the control group designated PSP. i. P1 was subjected to a single 160G centrifugation for 6min resulting in 100 µL of PRP, ii. P2 was resigned to double centrifugation with the first stage 160G for 20min and the second stage for 400G for 15 min, resulting in 100 µL of PRP and iii. P3 intended for double centrifugation with the first stage of 300G for 10 min and the second stage of 640G for 10 min, resulting in 100 µL of PRP. We obtained higher platelet concentrations of protocols P2 and P3 with concentrations higher than 519%. Regarding the morphological visualization of platelet smears, the three protocols presented good visualization, but P3 stood out for the others in terms of total preparation time and less erythrocyte invasion. Thus, we standardized an in vivo animal model for future scientific investigations interested in the use of PRP Rattus novergicus (Wistar)(AU)

Challenges in measuring angles between craniofacial structures

Abstract Objective: Three-dimensional (3D) angular measurements between craniofacial planes pose challenges to quantify maxillary and mandibular skeletal discrepancies in surgical treatment planning. This study aims to compare the reproducibility and reliability of two modules to measure angles between planes or lines in 3D virtual surface models. Methodology: Twenty oriented 3D virtual surface models de-identified and constructed from CBCT scans were randomly selected. Three observers placed landmarks and oriented planes to determine angular measurements of pitch, roll and yaw using (1) 3D pre-existing planes, (2) 3D planes created from landmarks and (3) lines created from landmarks. Inter- and intra-observer reproducibility and repeatability were examined using the Intra-Class Correlation (ICC) test. One observer repeated the measurements with an interval of 15 days. ANOVA was applied to compare the 3 methods. Results: The three methods tested provided statistically similar, reproducible and reliable angular measurements of the facial structures. A strong ICC varying from 0.92 to 1.00 was found for the intra-observer agreement. The inter-observer ICC varied from 0.84 to 1.00. Conclusion: Measurements of 3D angles between facial planes in a common coordinate system are reproducible and repeatable either using 3D pre-existing planes, created based on landmarks or angles between lines created from landmarks.

Avaliação quantitativa da cobertura assistencial médica básica e especializada no município de Caratinga ­ MG / Quantitative assessment of basic and specialized medical assistance coverage in the city of Caratinga -MG

Avaliou-se o quantitativo inerente à cobertura assistencial médica, básica e especializada do município de Caratinga-MG, no período de setembro de 2014 a agosto de 2015. Estudo observacional transversal. Os elementos referenciados foram avaliados por meio de dados secundários do sistema de informação ambulatorial SIA/SUS, referente às 23 equipes da Estratégia Saúde da Família, agregados no seguinte perfil de pacientes: menores de 01 ano, 01 a 04, 05 a 14, 15 a 44, 45 a 59 anos e de 60 anos ou mais. Posteriormente foram avaliados os encaminhamentos aos atendimentos especializados, sendo submetidos a uma análise de parâmetros, de acordo com a Portaria 1101/02 do Ministério da Saúde. Os dados foram calculados através das frequências absolutas e relativas, média e desvio-padrão. Na avaliação para a média e desvio-padrão os resultados apontaram para um superávit nas consultas médicas básicas para os pacientes acima de 60 anos (m=905,4 e dp=347,4), e um déficit no cumprimento dos parâmetros nas consultas médicas básicas das demais faixas etárias: menores de 01 ano (m=101,4 e dp=50,4), 01 a 04 anos (m=191,4 e dp=54,3), 05 a 14 anos (m=375,8 e dp=93,7) e 15 a 59 anos (m=2.200 e dp=533,7). Os encaminhamentos aos atendimentos especializados também apresentaram déficit (m=380,2 e dp=234,2). A cobertura assistencial de consulta médica básica e de encaminhamento ao atendimento especializado no município de Caratinga-MG apresentou um percentual inferior aos parâmetros preconizados pelo Ministério da Saúde, com atendimento em apenas uma faixa etária.

The quantitative of medical, basic and specialized health care coverage was evaluated in the city of Caratinga-MG from September 2014 to August 2015. It is an observational research. The referenced elements were evaluated through secondary data from the outpatient information system - SIA / SUS referring to the 23 teams of the Family Health Strategy, aggregated in the following patients profile: under 1 year, from 01 to 04 years, from 05 to 14 years, 15 to 44 years, 45 to 59 years and 60 years or more. Subsequently, the referrals to the specialized services were evaluated, being submitted to a parameter analysis, in accordance with Ministry of Health Ordinance 1101/02. Data were calculated through the absolute and relative frequencies, mean and standard deviation. In the evaluation for the mean and standard deviation the results pointed to a surplus in basic medical appointments for patients over 60 years (m = 905.4 and dp = 347.4), and a deficit in compliance with the parameters in the basic medical visits (M = 101.4 and dp = 50.4), 01 to 04 years (m = 191.4 and dp = 54.3), 05 to 14 years (m = 375, 8 and dp = 93.7) and 15 to 59 years (m = 2,200 and dp = 533.7). Referrals to specialized care also presented a deficit of (m = 380.2 and dp = 234.2). The assistance coverage of basic medical consultation and referral to specialized care in the city of Caratinga-MG presented a percentage lower than the parameters recommended by the Ministry of Health.

Standardization of a protocol for shotgun proteomic analysis of saliva

Abstract Saliva contains numerous proteins and peptides, each of them carries a number of biological functions that are very important in maintaining the oral cavity health and also yields information about both local and systemic diseases. Currently, proteomic analysis is the basis for large-scale identification of these proteins and discovery of new biomarkers for distinct diseases. Objective This study compared methodologies to extract salivary proteins for proteomic analysis. Material and Methods Saliva samples were collected from 10 healthy volunteers. In the first test, the necessity for using an albumin and IgG depletion column was evaluated, employing pooled samples from the 10 volunteers. In the second test, the analysis of the pooled samples was compared with individual analysis of one sample. Salivary proteins were extracted and processed for analysis by LC-ESI-MS/MS. Results In the first test, we identified only 35 proteins using the albumin and IgG depletion column, while we identified 248 proteins without using the column. In the second test, the pooled sample identified 212 proteins, such as carbonic anhydrase 6, cystatin isoforms, histatins 1 and 3, lysozyme C, mucin 7, protein S100A8 and S100A9, and statherin, while individual analysis identified 239 proteins, among which are carbonic anhydrase 6, cystatin isoforms, histatin 1 and 3, lactotransferrin, lyzozyme C, mucin 7, protein S100A8 and S100A9, serotransferrin, and statherin. Conclusions The standardization of protocol for salivary proteomic analysis was satisfactory, since the identification detected typical salivary proteins, among others. The results indicate that using the column for depletion of albumin and IgG is not necessary and that performing individual analysis of saliva samples is possible.

Reliability of light microscopy and a computer-assisted replica measurement technique for evaluating the fit of dental copings

Abstract The aim of this in vitro study was to assess the reliability of two measurement systems for evaluating the marginal and internal fit of dental copings. Material and Methods: Sixteen CAD/CAM titanium copings were produced for a prepared maxillary canine. To modify the CAD surface model using different parameters (data density; enlargement in different directions), varying fit was created. Five light-body silicone replicas representing the gap between the canine and the coping were made for each coping and for each measurement method: (1) light microscopy measurements (LMMs); and (2) computer-assisted measurements (CASMs) using an optical digitizing system. Two investigators independently measured the marginal and internal fit using both methods. The inter-rater reliability [intraclass correlation coefficient (ICC)] and agreement [Bland-Altman (bias) analyses]: mean of the differences (bias) between two measurements [the closer to zero the mean (bias) is, the higher the agreement between the two measurements] were calculated for several measurement points (marginal-distal, marginal-buccal, axial-buccal, incisal). For the LMM technique, one investigator repeated the measurements to determine repeatability (intra-rater reliability and agreement). Results: For inter-rater reliability, the ICC was 0.848-0.998 for LMMs and 0.945-0.999 for CASMs, depending on the measurement point. Bland-Altman bias was −15.7 to 3.5 μm for LMMs and −3.0 to 1.9 μm for CASMs. For LMMs, the marginal-distal and marginal-buccal measurement points showed the lowest ICC (0.848/0.978) and the highest bias (-15.7 μm/-7.6 μm). With the intra-rater reliability and agreement (repeatability) for LMMs, the ICC was 0.970-0.998 and bias was −1.3 to 2.3 μm. Conclusion: LMMs showed lower interrater reliability and agreement at the marginal measurement points than CASMs, which indicates a more subjective influence with LMMs at these measurement points. The values, however, were still clinically acceptable. LMMs showed very high intra-rater reliability and agreement for all measurement points, indicating high repeatability.

Influence of remaining coronal thickness and height on biomechanical behavior of endodontically treated teeth: survival rates, load to fracture and finite element analysis

Abstract Objective To evaluate the effect of restorative strategy (fiber post vs cast post and core), coronal height (0 mm vs 2 mm) and thickness (higher than 1 mm vs lower than 1 mm) on survival rate, fracture resistance and stress distribution. Material and Methods Seventy-two bovine teeth were cleaned and allocated in six groups (n = 12). Twenty-four teeth were sectioned at 13 mm length (no remaining coronal structure) and forty-eight were sectioned at 15 mm (2 mm remaining coronal structure). Half of the forty-eight had remaining coronal thickness lower than 1 mm and the other half had thickness higher than 1 mm. All root canals were prepared at 10 mm (luting length), fiber posts were cemented in thirty-six specimens and cast post and core in other thirty-six. All teeth were restored with metallic crowns. Specimens were submitted to 1.5 million cycles (100 N, 45°, 10 Hz at 2 mm below incisal edge) and evaluated at each 500,000 cycles to detect failures. Specimens that survived were submitted to load to fracture test. Bidimensional (Rhinoceros® 4.0) models were obteined survival data submitted to Kaplan-Meier (α=0.05) analysis and load to fracture values submitted to ANOVA and Tukey tests (α=0.05). Results Groups without remaining coronal structure showed survival rates lower than other groups (p=0.001). ANOVA showed higher values of load to fracture for groups with coronal thickness higher than 1 mm (p=0.0043). Finite element analysis showed better stress distribution in groups with remaining coronal structure and restored with fiber post. Conclusion Specimens without remaining coronal structure have lower survival rates. Specimens with remaining structure lower than 1 mm and without coronal structure support the same load to fracture value independently of the restorative strategy.

Assessment of the accuracy of portable monitors for halitosis evaluation in subjects without malodor complaint. Are they reliable for clinical practice?

Abstract Halitosis is defined as a foul odor emanated from the oral cavity, with great impact in quality of life and social restraints. Recently, the use of Breath Alert™ in research increased significantly. Halimeter™, another portable device, is often used in clinical practice. Nevertheless, not many studies have verified the accuracy and compared the results of both devices simultaneously. Objective: To verify the accuracy of Breath Alert™ and Halimeter™ in patients without chief complaint of halitosis, using the organoleptic test (OT) as "gold standard." The second aim was to verify whether their concomitant use could enhance the diagnostic accuracy of halitosis. Material and Methods: A cross-sectional analytical study was performed. The quality of expired air of 34 subjects without chief complaint of halitosis was assessed. Two experienced examiners carried out the OT. Afterward, a third blinded examiner performed Halimeter™ (HT) and Breath Alert™ (BA) tests. Results: The OT identified halitosis in 21 subjects (62%). The area under the ROC curve (95% confidence interval) was 0.67 (0.48-0.85) and 0.54 (0.34-0.75) for HT and BA, respectively. The accuracy for HT and BA was 59% and 47%, respectively. The combined usage of HT and BA provided 11 positive results, being 9 subjects (43%) out of the total of 21 positive cases. Conclusions: Halimeter™ and Breath Alert™ were not able to diagnose halitosis in non-complainer subjects at the same level as the organoleptic examination, since their accuracy were low. Our results suggest that such portable devices are not reliable tools to assess halitosis and may neglect or misdiagnose a considerable number of patients in clinical practice.

Two-point discrimination values vary depending on test site, sex and test modality in the orofacial region: a preliminary study

Abstract The two-point discrimination (TPD) test is one of the most commonly used neurosensory tests to assess mechanoperception in the clinical settings. While there have been numerous studies of functional sensibility of the hand using TPD test, there have been relatively not enough reports on TPD in the orofacial region. Objective The aims of the present study were to determine the normal values of TPD in the six trigeminal sites (the forehead, cheek, mentum, upper lip, lower lip, and the tongue tip) and to investigate the effect of the site, sex, and test modality on the TPD perception. Material and Methods Forty healthy volunteers consisting of age-matched men (20) and women (20) with a mean age of 27.1 years were recruited. One examiner performed the TPD test using a simple hand-operated device, i.e., by drawing compass with a blunt or sharp-pointed tip. The static TPD with a blunt-pointed tip (STPDB), moving TPD with a blunt-pointed tip (MTPDB), and static TPD with a sharp-pointed tip (STPDS) were measured. The predictors were the site, sex, and test modality, and the outcome variable was the TPD value. Three-way ANOVA was used for statistics. Results The analysis showed a significant effect of the site, sex and test modality on the TPD values. Significant differences between the test sites were observed with the descending order from the forehead and cheek>mentum>upper lip and lower lip>tongue tip and index finger. Women showed lower TPD values than those of men. The STPDS measurements were consistently lower than those of the STPDB and MTPDB. Conclusions The normal values of TPD in this study suggest that the cheek and forehead were less sensitive than other regions evaluated and women were more sensitive than men. The STPDS was the most sensitive test modality.

Análise da distribuição das tensões em maxila submetida à expansão cirurgicamente assistida com aparelho ósseo-suportado / Analysis of the distribution of maxillary stresses submitted to surgically assisted maxillary expansion with a bone-supported device

A expansão de maxila cirurgicamente assistida (EMCA) é a modalidade de tratamento que tem como objetivo romper as regiões de reforço maxilar permitindo seu movimento expansivo gradativamente. Tal movimento pode ser realizado às custas de aparelhos dento-suportado, dento-muco-suportado, implanto-suportados ou ósseo-suportado. Os efeitos produzidos pelo tratamento vão desde alterações esqueléticas (aumento da base, cavidade e do espaço aéreo nasais) até inclinações dentárias (principalmente nos dentes de suporte do aparelho expansor), dentre outras. O objetivo desta pesquisa foi avaliar, por meio do Método de Elementos Finitos (MEF), a distribuição das tensões produzidas pela EMCA nas estruturas maxilares utilizando-se aparelho expansor ósseo-suportado. Material e métodos: Foi confeccionado um modelo tridimensional de maxila para simulação da EMCA com osteotomia tipo LeFort I descendente sem degrau, com disjunção pterigomaxilar utilizando um modelo de aparelho ósseo-suportado para o teste com a simulação de abertura de 1mm. Os resultados mostraram maior abertura da maxila na região anterior de incisivos a pré-molar (1 mm) e em menor quantidade (0,6mm) na região de molares. A tensão máxima principal (TMXP) mostrou a concentração de tensões principalmente em toda face palatina da maxila de pré-molar ao túber maxilar. Pela face lateral, ficou mais evidente a TMXP nas região de osso alveolar posterior ao pré-molar, molares e túber, assim como na região de pilar zigomático acima da osteotomia. Pelo plano transversal foi possível observar a transmissão de tensões ao longo das estruturas ósseas mostrando pouca dissipação para as raízes do molar. Enquanto que as forças de compressão (Tensão Mínima Principal), evidenciadas pela tensão mínima principal, se manifestaram nas áreas de pilar zigomático e adjacentes as osteotomias, assim como na áreas de contato do apoio do aparelho com o osso palatino. Tensões de tração e compressão também foram evidenciadas na região de processo pterigoide. A análise de tensão de Von Mises mostrou que a parte que mais sofre estresse é a haste que liga o módulo do aparelho com a plataforma de apoio. Conclusão: Houve maior abertura da maxila na região anterior e as tensões resultantes de forças transmitidas ao osso alveolar dos dentes adjacentes ao aparelho, parecem não ser suficientes para deslocar os dentes.(AU)

Surgically assisted maxillary expansion (SARME) is the modality of treatment that aims to weaken the points of maxillary reinforcement allowing its gradual expansion. Such movement can be performed at the expense of dento-supported, dento-muco-supported, implanto-supported or bony-backed devices. The effects produced by the treatment range from skeletal changes (increase of nasal base, cavity and nasal air space) to dental inclinations (mainly in the supporting teeth of the expander apparatus), among others. The objective of the present research was to evaluate the distribution of stress produced by SARME in the maxillary structures using the bone-supported expander apparatus by the Finite Element Method (FEM). Material and methods: A three-dimensional hemi-maxilla model was simulated for SARME with a non-step descending LeFort I osteotomy with pterygomaxillary disjunction using a bone-supported device model for the 1mm aperture simulation test. The results showed a greater opening of the maxilla in the anterior region of the incisors to the premolar (1 mm) and smaller (0.6 mm) in the molar region. The principal maximal stress (TMXP) showed the concentration of the tension forces mainly in all the palatine face of the pre-molar maxilla to the maxillary tuft. Due to the lateral aspect, the TMXP was more evident in the posterior alveolar bone region, the molars and tuber, as well as in the epilating zygomatic region above the osteotomy. From the transversal plane, it was possible to observe the transmission of stress along the bony structures showing little dissipation for the roots of the molar. Meanwhile, the forces of compression (Principal Minimum Tension) evidenced by the principal minimal stress, were manifested in the areas of the zygomatic pillar adjacent to the osteotomies, as well as in the areas of contact of the support of the apparatus with the palatine bone. Tension and compression forces were also evidenced in the pterygoid process region. Von Mises' stress analysis showed that the most stressed part is the rod connecting the device module to the support platform. Conclusion: There was a greater opening of the maxilla in the anterior region and the resulting forces of tension transmitted to the alveolar bone of the teeth adjacent to the appliance did not seem to be sufficient to displace the teeth.(AU)

Avaliação da mineralização dos segundos molares inferiores como parâmetro para a classificação da idade biológica / Evaluation of the mineralization of permanent second molars as a parameter to classify the biological age of the individual

O presente trabalho teve como objetivo avaliar se a mineralização dos segundos molares inferiores permanentes pode ser usado como parâmetro para classificar a idade biológica do indivíduo. A amostra foi constituída por 129 radiografias panorâmicas, sendo 71 indivíduos do sexo feminino e 58 indivíduos do sexo masculino, na faixa etária de 7 anos à 12 anos e 1 mês. Para a análise da mineralização dental foi utilizada a tabela proposta por Nolla (1960). Os resultados da análise foram documentados numa planilha do programa Microsoft Excel 2010 contendo o nome completo, data de nascimento, data da tomada radiográfica, idade em anos e meses, número do prontuário, estágio de Nolla (1960) lado direito e lado esquerdo. Foi realizada a análise estatística (Mann-Whitney, Wilcoxon e correlação de Spearman) e pôde-se concluir que na amostra estudada não foi encontrado dimorfismo sexual, que a mineralização dentária ocorre de forma similar do lado direito e esquerdo, e que a mineralização dos segundos molares inferiores permanentes podem ser usadas como parâmetro para estimar a idade biológica e cronológica de um indivíduo.(AU)

This paper aimed to evaluate if the mineralization of permanent second molars can be used as a parameter to classify the biological age of the individual. The sample was composed of 129 panoramic radiographs, being 71 females and 58 males, aged 7 years and 12 years and 1 month. For the analysis of dental mineralization it was used a table proposed by Nolla (1960) with X-rays on the negatoscope (light box). The analysis results were documented in a Excel spreadsheet containing the full name, date of birth, date of the radiographic procedure, age in years and months, medical record number, stage of Nolla (1960) right and left side. Performed a statistical analysis, we concluded in our survey that the tooth mineralization occurs similarly in the right and left side, there is a certain precocity when compared to chronological age and the stage of mineralization in females compared to males. We also conclude that within the same chronological age, girls and boys have different mineralization stages, indicating that the dental mineralization can be used to identify the biological age, and the same is poorly correlated with chronological age.(AU)

Effect of software version and parameter settings on the marginal and internal adaptation of crowns fabricated with the CAD/CAM system

Objective This study investigated the marginal and internal adaptation of individual dental crowns fabricated using a CAD/CAM system (Sirona’s BlueCam), also evaluating the effect of the software version used, and the specific parameter settings in the adaptation of crowns.Material and Methods Forty digital impressions of a master model previously prepared were acquired using an intraoral scanner and divided into four groups based on the software version and on the spacer settings used. The versions 3.8 and 4.2 of the software were used, and the spacer parameter was set at either 40 μm or 80 μm. The marginal and internal fit of the crowns were measured using the replica technique, which uses a low viscosity silicone material that simulates the thickness of the cement layer. The data were analyzed using a Friedman two-way analysis of variance (ANOVA) and paired t-tests with significance level set at p<0.05.Results The two-way ANOVA analysis showed the software version (p<0.05) and the spacer parameter (p<0.05) significantly affected the crown adaptation. The crowns designed with the version 4.2 of the software showed a better fit than those designed with the version 3.8, particularly in the axial wall and in the inner margin. The spacer parameter was more accurately represented in the version 4.2 of the software than in the version 3.8. In addition, the use of the version 4.2 of the software combined with the spacer parameter set at 80 μm showed the least variation. On the other hand, the outer margin was not affected by the variables.Conclusion Compared to the version 3.8 of the software, the version 4.2 can be recommended for the fabrication of well-fitting crown restorations, and for the appropriate regulation of the spacer parameter.

Parametrização de procedimentos e de cobertura nas áreas de endodontia, periodontia e exodontia para as populações adolescente, adulta e idosa de Minas Gerais / Parameterization of procedures and coverage in endodontics, periodontics and surgery in adolescents, adults and elderly people in Minas Gerais, Brazil

A melhoria nas condições econômicas e sociais alcançadas nestes últimos anos no Brasil e a implantação do Programa Brasil Sorridente trouxeram um avanço significativo das condições de saúde bucal em todas as faixas etárias da população brasileira. Entretanto os agravos em saúde bucal continuam com prevalência acima do preconizado pela Organização Mundial da Saúde. Para um constante avanço da saúde bucal é necessário o conhecimento da realidade epidemiológica localmente para subsidiar o planejamento e melhorar a vigilância em saúde. O emprego de indicadores e parâmetros é fundamental para alcançarmos as metas propostas, o aperfeiçoamento do processo de gestão e consequentemente a melhoria na prestação dos serviços em saúde bucal. O processo de pactuação de metas e os parâmetros propostos são frágeis e de pouca confiabilidade. Necessitando de serem revistos e redimensionados, tanto na atenção básica quanto na atenção especializada. Este estudo propõe o redimensionamento dos parâmetros de cobertura e produção nas áreas de endodontia, periodontia e exodontia nas faixas etárias de 15 a 19, 35 a 44 e 65 a 74 anos da população do Estado de Minas Gerais. Trata-se de um estudo exploratório, quantitativo e descritivo. Os parâmetros foram calculados tendo como base as necessidades da população encontradas no levantamento epidemiológico SB-Minas Gerais e os dados de produtividade encontrados no SIA/SUS, entre os anos de 2010 e 2013. Este estudo identificou que os parâmetros de cobertura e produtividade mais altos foram identificados para as exodontias, exceto entre os adolescentes para os quais os parâmetros de endodontia obtiveram valores mais altos. Menores valores dos parâmetros foram identificados entre idosos nas áreas de endodontia e exodontias. Portanto o presente estudo vem reafirmar a importância de se ter como referência, dados epidemiológicos de origem local, como forma de se conferir maior adequação a este processo de parametrização

The improvement in economic and social conditions achieved in recent years in Brazil and the Smiling Brazil Program deployment, there was a significant advance oral health conditions in all age groups of the population. However the aggravations in oral health continue with high prevalence and with targets above the recommended by the World Health Organization. For a constant advancement of oral health knowledge is required of the epidemiological reality locally to support the planning and improve health surveillance. The use of indicators and parameters is essential to achieve the proposed goals, to improve the management process and consequently the improvement in the provision of oral health services. The process of determining goals and parameters proposed are fragile and unreliable. Need to be reviewed and resized, both in the basic attention and specialized attention. This study proposes the resizing of the parameters and production in the fields of Endodontics, Periodontics and dental extraction in the age group of 15 to 19, 35 to 44 and 65 to 74 years the population of the State of Minas Gerais. It is a exploratory study, quantitative and descriptive. The parameters were calculated based on the needs of production and coverage found in the epidemiological survey SB-Minas Gerais and productivity data found in the SIA/SUS, between 2010 and 2013. This study identified that the parameters of coverage and higher productivity were identified for the dental extractions, except among teenagers for which the parameters of Endodontics have obtained higher values. Smaller values of the parameters were identified among the elderly in the areas of Endodontics and dental extractions. Therefore this study comes to reaffirm the importance of having as a reference, epidemiological data of local origin, as a way to confer greater fitness for this parameterization process

Estudo por meio de microtomografia da qualidade, morfologia óssea, volume da cabeça da mandíbula e volume da fossa articular em ratos (Rattus norvegicus, albinos, Wistar) submetidos a remoção do disco articular e cartilagem articular / Evaluation of Bone quality, morphology and volume of the condyle and volume of articular fossa from Wistar rats after remotion of articular disc and cartilage

Diante da escassez de estudos que correlacionem a remoção do disco ou da cartilagem articular do côndilo, sobretudo, na análise de parâmetros morfométricos, o presente estudo objetivou analisar, por meio de microtomografia, alterações da estrutura e qualidade óssea em ratos (Rattus norvegicus, albinos, Wistar). Os espécimes foram divididos em três grupos experimentais e a cirurgia ocorreu, em todos os grupos, do lado direito. No grupo experimental (RDC), deu-se a remoção do disco articular e remoção da cartilagem articular do lado direito; no grupo experimental (RD), somente remoção do disco articular do lado direito; no grupo experimental (SHAM), apenas acesso cirúrgico e posterior sutura sem danos ao disco articular ou cartilagem. Os côndilos foram analisados por microtomografia e executou-se comparação entre os lados de cada grupo e entre os grupos do lado direito e esquerdo. Os parâmetros morfométricos apontaram para um declínio da estrutura e qualidade óssea, sucessivamente, em ordem crescente, no lado operado dos grupos SHAM, RD e RDC.

Considering that only few studies on the correlation between temporomandibular joint (TMJ) disk removal and conditions of the cartilage of the condyle, especially in the analysis of morphometric parameters, this study aimed to analyze changes in the bone structure and quality in rats (Rattus norvegicus, albino Wistar) with micro-computed tomography. The specimens were divided into three groups that underwent surgery in the right TMJ. In the first experimental group, surgical procedures included both disk and joint cartilage removal (DCR). In the second experimental group, only the disk was removed during surgeries (DR), whereas in the control group (SHAM) only surgical access and subsequent suture without damaging the disc or joint cartilage was performed. The condyles were analyzed by micro-computed tomography and inter-group and intra-group side (left and right) comparisons were carried out. The morphometric parameters indicated a decline in bone structure and quality successively in the groups in ascending order of TMJ surgical damage (control group, SHAM, and the two experimental groups, DR and DCR).

Shaping ability of Reciproc and TF Adaptive systems in severely curved canals of rapid microCT-based prototyping molar replicas

Objective: To evaluate the shaping ability of Reciproc and Twisted-File Adaptive systems in rapid prototyping replicas. Material and Methods: Two mandibular molars showing S-shaped and 62-degree curvatures in the mesial root were scanned by using a microcomputed tomography (μCT) system. The data were exported in the stereolitograhic format and 20 samples of each molar were printed at 16 µm resolution. The mesial canals of 10 replicas of each specimen were prepared with each system. Transportation was measured by overlapping radiographs taken before and after preparation and resin thickness after instrumentation was measured by μCT. Results: Both systems maintained the original shape of the apical third in both anatomies (P>0.05). Overall, considering the resin thickness in the 62-degree replicas, no statistical difference was found between the systems (P>0.05). In the S-shaped curvature replica, Reciproc significantly decreased the thickness of the resin walls in comparison with TF Adaptive. Conclusions: The evaluated systems were able to maintain the original shape at the apical third of severely curved mesial canals of molar replicas. .