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Objectives: This study aimed to assess the influence of translucent monolithic versus bilayered crowns and whether the use of a CoCr base abutments affects the fatigue and fracture resistance of screwed implant‐supported single crowns with external connections under mechanical cycling. Materials and Methods: Fifty specimens were divided into groups: (1) metal–ceramic (MC) crown, (2) veneered zirconia crown (Zr), (3) veneered zirconia crown with a CoCr base abutment (ZrB), (4) monolithic translucent zirconia crown (MZr), and (5) monolithic translucent zirconia crown with a CoCr base abutment (MZrB). Specimens underwent mechanical cycling (5 × 106 cycles; 150 N) evaluating fatigue resistance (number of failures) and those that failed were subsequently subjected to fractographic analyses (stereomicroscope and scanning electron microscope) to evaluate failure location and area, and maximum fracture load was also measured. Results: The failure‐related survival rate (100%) and maximum fracture resistance of the MZrB were significantly higher than those of MC and Zr (50%; p < 0.05). There were no significant differences in the failure rate and fracture resistance when a CoCr base abutment was used or not in the translucent monolithic Zr groups (p > 0.05;MZrB vs. MZr). Failure location, with MC crowns' fractures, noted at the screw area (p = 0.043), while all‐ceramic crowns were mostly in the cuspid and to failure area, the Zr group had the largest mean (15.55 ± 9.17 mm2) among the groups, significant difference only when compared with MC (1.62 ± 0.81 mm2) (p = 0.025). Conclusions: Translucent monolithic zirconia crowns exhibited significantly higher fatigue and fracture resistance compared with conventional MC and bilayered crowns. Clinical Significance: The appropriate choice of material and manufacturing technique is crucial for predicting the higher clinical performance of single crowns. Enhanced mechanical resistance in terms of fatigue and fracture resistance can be achieved by replacing MC and bilayered restorations with computer‐aided design and computer‐aided manufacturing monolithic zirconia. [ABSTRACT FROM AUTHOR]

Objective: This systematic review investigates the prevalence of erosive tooth wear (ETW) in individuals classified as risk groups (gastroesophageal reflux disease, eating disorders, special diets, acidic beverage, drugs and alcohol, legal drugs and medications, and occupational or sports). Materials and methods: The research was conducted in nine databases (PubMed/MEDLINE, Embase, Cochrane Library, LILACS/BVS, SciELO, Scopus, Science Direct, Open Grey, and Web of Science) up to April 2024 (PROSPERO CRD42021270150), along with a manual search of grey literature. Observational studies involving children and adults from these previously mentioned risk groups, which provided data on ETW prevalence, were included without date or language restrictions. The methodological quality of studies was evaluated using the Joanna Briggs Institute's Prevalence Data Critical Appraisal Tool. General and subgroup data were meta-analyzed using a random-effects model. Results: Overall, 4403 studies were retrieved, out of which 148 met the inclusion criteria. Each risk group showed higher prevalences of ETW in these patients in general and subgroup analysis; although subgroup analysis was not possible for all risk groups due to the heterogeneity of the indices found. Conclusions: The Legal drugs and Medications risk group showed lower overall prevalence values (30%), while the Drugs and Alcohol risk group obtained higher values (67%). Prevalence rates for other groups were: Gastroesophageal reflux disease (54.1%), Eating Disorders (65%), Special Diets (65.9%), Acidic Beverages (40%), Occupational and Sports (51%). Clinical relevance: This systematic review highlights that risk groups are indeed at significant risk for the development of ETW and greater preventive care and dental monitoring are needed. [ABSTRACT FROM AUTHOR]

Objective: This systematic review investigates the prevalence of erosive tooth wear (ETW) in individuals classified as risk groups (gastroesophageal reflux disease, eating disorders, special diets, acidic beverage, drugs and alcohol, legal drugs and medications, and occupational or sports). Materials and methods: The research was conducted in nine databases (PubMed/MEDLINE, Embase, Cochrane Library, LILACS/BVS, SciELO, Scopus, Science Direct, Open Grey, and Web of Science) up to April 2024 (PROSPERO CRD42021270150), along with a manual search of grey literature. Observational studies involving children and adults from these previously mentioned risk groups, which provided data on ETW prevalence, were included without date or language restrictions. The methodological quality of studies was evaluated using the Joanna Briggs Institute's Prevalence Data Critical Appraisal Tool. General and subgroup data were meta-analyzed using a random-effects model. Results: Overall, 4403 studies were retrieved, out of which 148 met the inclusion criteria. Each risk group showed higher prevalences of ETW in these patients in general and subgroup analysis; although subgroup analysis was not possible for all risk groups due to the heterogeneity of the indices found. Conclusions: The Legal drugs and Medications risk group showed lower overall prevalence values (30%), while the Drugs and Alcohol risk group obtained higher values (67%). Prevalence rates for other groups were: Gastroesophageal reflux disease (54.1%), Eating Disorders (65%), Special Diets (65.9%), Acidic Beverages (40%), Occupational and Sports (51%). Clinical relevance: This systematic review highlights that risk groups are indeed at significant risk for the development of ETW and greater preventive care and dental monitoring are needed. [ABSTRACT FROM AUTHOR]

Ectodermal dysplasia is a group of hereditary syndromes that presents defects in the development of one or more tissues of ectodermal origin. This study aimed to describe an oral rehabilitation of a patient with ectodermal dysplasia. Performed with fixed and removable prostheses, it returned the function and aesthetics, raising his self-esteem. Patient went for outpatient treatment at the Hospital for Craniofacial Anomalies in the dental prosthesis sector, complaining of esthetics and impaired masticatory function. On intraoral examination, numerous tooth absences were observed due to agenesis and malformation in the few remaining teeth (teeth region 13, 11, 21 23). After the clinical and radiographic examination, the treatment included the manufacture of total crowns milled in elements 11, 13, 21, and 23 (06 elements), with bilateral fittings in the canine region to receive a removable partial denture (class I of Kennedy), placing teeth on the free ends due to the impossibility of installing implants. In the lower arch, the only teeth the patient had were the canines 33 and 43, with the aggravating factor that they were rotated and malformed. A fixed canine-to-canine denture and a removable partial denture for the posterior region were made. [ABSTRACT FROM AUTHOR]

Dental implants provide a predictable treatment option for partial and complete edentulism via the placement of a fixed permanent artificial root to support prosthetic dental crowns. Despite the high survival rates, long-term dental implant failures are still reported, leading to implant removals and additional financial and health burdens. While extrinsic factors that improve the success rate of implants have been well explored, the impact of genetic factors on this matter is poorly understood. A systematic review and meta-analysis study was conducted to determine whether genetic factors contribute to an increased risk of dental implant failures. A comprehensive search for peer-reviewed articles on dental implants and genetic factors was performed using various literature database libraries. The study design was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines, and the obtained records were registered in the International Prospective Register of Systematic Reviews (PROSPERO) database. According to the exclusion/inclusion criteria, 13 studies were eligible for this study out of 809 articles. The meta-analysis of the combined association studies of DNA variations and dental implants did not indicate an increased risk for implant failure due to DNA variations in IL-1B, IL-10 and TNF-α. This study emphasizes the need for larger randomized controlled clinical trials to inform clinicians and patients about the role of genetic factors on dental implant survival and the success rate in healthy and compromised patients. [ABSTRACT FROM AUTHOR]

Objective: To conduct a systematic review with meta-analysis (PROSPERO: CRD42022313303) to analyze studies that evaluated techniques used to obtain impressions in single cases and dental partial fixed, using the intraoral scanning system (intervention) compared to the conventional molding system for prostheses (comparison). Methods: The PubMed/Medline, Cochrane Collaboration, Web of Science and SciELO databases were analyzed using the keywords: "Dental Impression Technique"; "Computer - Aided Design"; "Dental, Partial, Fixed" and "Digital Workflow". The final sample consisted of 13 studies selected for data synthesis. The collected data were tabulated and organized qualitatively and quantitatively using Comprehensive Meta-Analysis software®. The level of significance considered was p<0.05. Results: The main results indicated there was no significant difference between digital and conventional flow for the items: marginal adaptation of the dental prosthesis, choice of method by the professional, patient's decision, and clinical execution time, p>0.05. However, the digital flow showed a significant reduction in laboratory time. Conclusion: Given the data, the digital scanning method is feasible for making single and multiple fixed prostheses compared to the conventional method, with the benefit of reducing laboratory time for its execution. More clinical studies are necessary to evaluate both methods. [ABSTRACT FROM AUTHOR]

The aim of this study was to analyze the stress distribution of short implants supporting single unit or splinted crowns by the photo-elasticity method. Four photo-elastic models were produced: A (3.75 × 7 mm); B (3.75 × 7 mm, 3.75 × 7 mm and 3.75 × 7 mm); C (3.75 × 10 mm, 3.75 × 7 mm and 3.75 × 7 mm); D (3.75 × 13 mm, 3.75 × 7 mm and 3.75 × 7 mm). The prostheses were made with Ni–Cr alloy. A load of 100 N in the axial and oblique directions was applied, totaling 380 applications, individually capturing their images in each model. The data were randomized and analyzed qualitatively and quantitatively by 2 examiners. The oblique loading was significantly more damaging. The increase in length was favorable for stress distribution ( p < 0.05). The splinting was beneficial for the transmission of stresses mainly ( p < 0.05). The splinting of the crowns, as well as increasing the length of the first implant and axial loading was most beneficial in the stress distribution. Short splinted implants behaved better than single unit implants. Increasing of the length of the first implant significantly improved the stress distribution in all analyzed situations. [ABSTRACT FROM AUTHOR]

Objective: This paper aims to conduct a systematic review (Cochrane model; PRISMA and PROSPERO: CRD42021244736) to study clinical data on different techniques used for the impression of patients in Complete Denture. Methods: The PubMed/Medline, Cochrane Collaboration, Web of Science, and SciELO databases were analyzed using these related keywords: “Complete denture,”; “Impression techniques,”; “material, dental impression.” From an initial sample of 2,167 papers, we selected 12 Randomized Controlled Trials (RCT), which compared different impression techniques. The collected data were tabulated qualitatively and quantitatively using Comprehensive Meta-Analysis software. The significance level considered was P<0.05. Results: In six studies comparing the number of control visits to obtain a complete denture, there was no significant difference between groups (P=0.794), the conventional methods (131 complete dentures) vs. the simplified process (with 136 full dentures). Other five papers, comparing 134 conventional prostheses vs. 144 prostheses obtained by the simplified method and measuring quality of life, indicated no significant difference between the groups compared, P=0.680. Conclusion: According to these data, different clinical methods may be viable to obtain a complete denture, specifically comparing conventional impression methods vs. simplified ones. Simplified techniques for complete dentures can be helpful when effectively used, as they reduce treatment time and financial costs without harming the patient’s quality of life. [ABSTRACT FROM AUTHOR]

Abstract Objectives To follow healing process of augmented maxillary sinus in rabbits analyzing the histological pattern of bone tissue formation, along with the osteogenic activity and vascularization using a bioactive vitroceramic in comparison to deproteinized bovine bone associated or not with autogenous bone graft. Design Forty five male adult New Zealand rabbits, 5 months of age, mean weight of 4 Kg, underwent bilateral sinus augmentation surgeries to be divided in five groups: G – (Control) particulate autogenous bone graft (AG), BO - deproteinized bovine bone, BO+G - deproteinized bovine bone + AG, BSi –vitroceramic, and BSi + G – vitroceramic +AG. After 15, 45 and 90 days, all animals were euthanized for specimen's removal to be analyzed under light microscopy, histomorphometry, and immunohistochemistry for Runx2 and VEGF labeling. Results G, BO and BO+G groups healed uneventfully, allowing the formation of mature remodeling bone at day 90, regarding the association of AG with the biomaterial. On the other hand, BSi and BSi + G groups showed an important cellular reaction and granulation/fibrous tissue formation from the first to the last period of observation. Runx-2 and VEGF immunolabeling were coherent with this result. However, histomorphometry did not reveal significant differences considering new bone formation. Conclusions Reconstructed maxillary sinuses using Biosilicate® permitted satisfactory new bone formation in comparison to the deproteinized bovine bone and AG. However, the presence of granulation/fibrous tissue and inflammatory cells associated to the degrading biomaterial indicate that further studies should be careful performed considering the immunological aspect of this new biomaterial. Graphical abstract Unlabelled Image Highlights • New bioactive vitroceramic used as bone substitute for maxillary sinus augmentation • Physico-chemical properties of different bioceramics • Immunological response requires investigation. [ABSTRACT FROM AUTHOR]

The aim of this study was to evaluate the influence of pontic and cantilever designs (mesial and distal) on 3-unit implant-retained prosthesis at maxillary posterior region verifying stress and strain distributions on bone tissue (cortical and trabecular bones) and stress distribution in abutments, implants and fixation screws, under axial and oblique loadings, by 3D finite element analysis. Each model was composed of a bone block presenting right first premolar to the first molar, with three or two external hexagon implants (4.0 . 10 mm), supporting a 3-unit splinted dental fixed dental prosthesis with the variations: M1 – three implants supporting splinted crowns; M2 – two implants supporting prosthesis with central pontic; M3 – two implants supporting prosthesis with mesial cantilever; M4 – two implants supporting prosthesis with distal cantilever. The applied forces were 400 N axial and 200 N oblique. The von Mises criteria was used to evaluate abutments, implants and fixation screws and maximum principal stress and microstrain criteria were used to evaluate the bone tissue. The decrease of the number of implants caused an unfavorable biomechanical behavior for all structures (M2, M3, M4). For two implant-supported prostheses, the use of the central pontic (M2) showed stress and strain distributions more favorable in the analyzed structures. The use of cantilever showed unfavorable biomechanical behavior (M3 and M4), mainly for distal cantilever (M4). The use of three implants presented lower values of stress and strain on the analyzed structures. Among two implant-supported prostheses, prostheses with cantilever showed unfavorable biomechanical behavior in the analyzed structures, especially for distal cantilever. [ABSTRACT FROM AUTHOR]

Introduction: mechanical hygiene is still the best method for the maintenance of oral health and prevention of biofilm formation. However, mouthrinses have been increasingly used as an adjunct support especially for post-operatory conditions or when periodontal conditions require. In this way, a number of mouthrinses are available, presenting different active ingredients with predominant antimicrobial action. Objectives: the aim of the present study was to evaluate the topical action of a green-tea extract-based mouthwash on gingival tissue. Materials and Methods: a longitudinal double-blind comparison was performed with two groups of patients clinically evaluated and diagnosed as suffering from gingivitis (n= 40). The patients were divided into two groups, according to the mouthrinse used: GT - green tea (concentration of 20mg/ ml), and P - placebo, 0.9% saline solution. Clinical examination of the mucosa, tooth staining, plaque and gingival indices were performed before and 15 days after the continuous use of the products twice a day. Results: no mucosal or tasting alterations were found, neither tooth staining regardless the mouthrinse used. Statistical assessment did not detect differences on gingival indexes between the groups before and after mouthrinses use; however, plaque indexes were significant lower in patients of GT group, compared to the P group. Conclusions: the use of phytotherapic products with active ingredients should be investigated for biofilm control, responsible for the onset and progression of periodontal disease, as well as other various oral pathologies. Considering the period of evaluation proposed in this study, relevant decrease in initial phase of plaque formation could be observed with the green tea mouthrinse. Further long-term evaluation studies should be carried-out in order to elucidate its continuous effects on oral structures. [ABSTRACT FROM AUTHOR]

This article describes a project that aimed to evaluate the volume of searches conducted by Brazilians on the Google platform related to oral health, facial/dental aesthetics, and orofacial pain/health aspects during the period from 2004 to 2022. The quantitative data showed that there was a greater interest in searches related to orofacial pain and general health compared to the other groups. Words like "whitening" and "herpes" were the most searched in groups A and B, respectively, while the phrase "face pain" was the most searched in group C. Overall, Brazilians showed a greater interest in words related to orofacial pain and general health. [Extracted from the article]

This systematic review analyzed the feasibility of digital impression for obtaining fixed dental prosthesis rehabilitations. Thirteen studies comparing the use of intraoral scanning with the conventional method of impression were analyzed. The main results indicated that there was no significant difference between the two methods regarding the marginal adaptation of the prosthesis, the professional's choice of method, the patient's decision, and the clinical execution time. It was concluded that the use of digital scanning is feasible for the fabrication of fixed prostheses, with the advantage of reducing laboratory time. However, further clinical studies are needed to evaluate potential complications and failures. [Extracted from the article]

This article is a systematic review that analyzes the use of digital scanning as a viable alternative for obtaining implant-supported single fixed prostheses. The review included studies that compared intraoral scanning with conventional impression for prosthesis fabrication. The results indicated that digital scanning is feasible and presents advantages such as shorter clinical procedure time, shorter laboratory work time, and higher patient satisfaction. However, no significant differences were identified in terms of complications or prosthesis failures between the conventional and digital workflows. [Extracted from the article]

This article reports a clinical case of integrated oral rehabilitation using a custom abutment in an implant-supported prosthesis in the anterior region. The patient had transparency in the peri-implant mucosa and a history of dental agenesis. The treatment included periodontal plastic surgery, dental restorations with composite resin, osseointegrable implant installation, and prosthetic rehabilitation. The custom zirconia prosthetic abutment was made using CAD/CAM technology, and the covering restoration was made with lithium disilicate ceramic. The clinical case presented favorable results in terms of aesthetics and functionality. [Extracted from the article]

This article describes a clinical case of aesthetic smile rehabilitation in a patient with mild enamel development disorder. The objective of the work was to use digital workflow for the fabrication of lithium disilicate ceramic veneers (E.max - CAD) on the patient's teeth. Dental veneers were used on teeth 12, 13, 22, and 23, with minimally invasive enamel preparation, and veneers on teeth 11 and 21, with more invasive preparations. At the end of the treatment, it was possible to observe the correction of shape, color, and texture, resulting in patient satisfaction. The E.max CAD system proved to be an excellent option for aesthetic smile rehabilitation, demonstrating durability and aesthetics, as well as a high degree of clinical success and patient satisfaction. [Extracted from the article]

A Fibrina Rica em Plaquetas e Leucócitos (L-PRF) é um biomaterial regenerativo utilizado na medicina e odontologia que faz parte da segunda geração de concentrados plaquetários. Essa matriz cicatricial autóloga possui em sua estrutura fibrina, plaquetas, leucócitos, fatores de crescimento e citocinas, que juntos cumprem a função de reproduzir dois fenômenos naturais: a coagulação sanguínea e o reparo tecidual. As plaquetas presentes na estrutura da membrana são degradadas natural e progressivamente no sítio cirúrgico, liberando fatores de crescimento lentamente e auxiliando no processo de cicatrização. Sua vantagem é a facilidade, rapidez e baixo custo para obtenção, além de não ser necessária a adição de anticoagulantes para sua confecção. O objetivo deste trabalho é analisar se o perfil sistêmico e de fatores ambientais relacionados ao paciente tem influência nas dimensões das membranas de Fibrina Rica em Plaquetas e Leucócitos L (PRF) como comprimento e largura, que serão utilizadas em cirurgias odontológicas. Foram selecionados 15 pacientes sendo 9 homens (60%) e 6 mulheres (40%), que realizaram procedimentos cirúrgicos tais como enxertos ósseos, biópsia excisional, frenectomia, recobrimento radicular e que necessitavam do uso de membranas de L (PRF). Os dados obtidos foram analisados adotando-se um nível de significância de 5%. Após análise dos resultados, verificou-se que o tamanho das membranas de L (PRF) não foi significativamente influenciado pelos nove fatores analisados, tanto em relação aos fatores sistêmicos como idade, sexo, peso, altura e antecedentes sistêmicos; como em relação aos fatores ambientais como vício (tabagismo e etilismo), uso de medicamento, prática de atividades físicas e qualidade do sono. Devido a sua grande relevância e importância atual, conclui-se que são necessários estudos futuros traçando novas perspectivas que aprofundem o conhecimento da relação sistêmica do paciente com as dimensões das membranas de L (PRF), assegurando cada vez mais sua viabilidade clínica, previsibilidade cirúrgica e efetividade nos procedimentos. [ABSTRACT FROM AUTHOR]

O sucesso e longevidade dos tratamentos reabilitadores dependem de diversos aspectos, um deles é a qualidade de higiene do paciente pós-instalação da prótese. Um dos tipos de próteses é a protocolo, sendo ela uma prótese total suportada por implantes, ela oferece muita segurança e conforto ao paciente, porém exige visitas periódicas ao dentista para realização de ajustes, manutenção e higiene. Este trabalho relata um caso clinico no qual a paciente fazia uso de próteses protocolos superior e inferior e apresentava dificuldades para realizar a devida higienização. A paciente foi atendida na clínica do projeto de extensão em Implantodontia no Centro Universitário Sagrado Coração (Unisagrado), além da dificuldade de higiene, ela relatou ardência no rebordo superior. As próteses implantossuportadas foram removidas e a limpeza interna dela foi realizada com jato de óxido de alumínio. A fim de melhorar o espaço para que a higienização fosse realizada de modo eficiente, a prótese protocolo superior foi substituída por uma nova, garantindo o espaço adequado para limpeza e desse modo, melhorar a condição de saúde bucal. [ABSTRACT FROM AUTHOR]

As próteses totais imediatas (PTI) representam uma modalidade de tratamento importante na Odontologia oferecendo conforto e estética para os pacientes. Faltam estudos que avaliem as técnicas e protocolos para a execução destas próteses. Assim, há necessidade de uma revisão sistemática a fim de se analisar os protocolos clínicos para indicação deste tipo de reabilitação oral. Portanto, este projeto tem como finalidade conduzir uma revisão sistemática com metanálise a fim de estudar os dados clínicos de diferentes estudos que avaliaram o desempenho de próteses totais imediatas em pacientes submetidos a este tipo de reabilitação oral. Um total de 14 estudos clínicos foram incluídos nesta revisão sistemática, uma taxa de satisfação dos pacientes em relação ao tratamento proposto foi de 82,6%, o qual foi considerada equiparável com outros tipos de próteses realizadas (overdentures e prótese total convencional). Em relação a necessidade de reembasamento das PTIs, um tempo médio de reembasamento até 5,2 meses foi observado nos estudos avaliados, porém existiu divergências nas indicações. As principais conclusões indicaram que há necessidade de adequado protocolo clínico para confecção das PTIs, envolvendo cirurgias minimamente invasivas e acompanhamento dos pacientes, a fim de se reduzir o desconforto e promover manutenção dos aspectos de dimensão vertical, oclusão bilateralmente balanceada e satisfação do paciente em relação ao tratamento. [ABSTRACT FROM AUTHOR]

O edentulismo no Brasil ainda é expressivo, portanto, estudos que avaliem técnicas de confecção de prótese totais (PT) são relevantes. A literatura não é concordante sobre o possível benefício de confecção de próteses totais utilizando tecnologias digitais quando comparada a técnica convencional. Assim, há necessidade de um protocolo clínico para recomendações no uso destas tecnologias para obtenção de PT. Este projeto tem como finalidade conduzir uma revisão sistemática com metanálise (modelo Cochrane; PRISMA e PROSPERO) a fim de estudar os índices de satisfação dos pacientes, dados clínicos de adaptação, taxas de complicações técnicas sobre a confecção de próteses totais utilizando a tecnologia CAD-CAM. As bases de dados PubMed/Medline, Cochrane Collaboration, Web of Science e SciELO foram analisadas utilizando unitermos relacionados: "Complete denture"; "CAD-CAM" e "Computer-Aided Design". Os dados coletados permitiram a obtenção da revisão de literatura e foram tabulados e organizados qualitativamente e quantitativamente utilizando os softwares: Review Manager 5.3 e Comprehensive Meta-Analysis. Os dados coletados foram analisados com o intuito de se responder a hipótese nula desse estudo. Dados finais permitiram constatar a viabilidade da obtenção de próteses totais pelo sistema CAD-CAM, sendo que o sistema permite a reprodutibilidade, boa adaptação das próteses e adequada aceitação dos pacientes. [ABSTRACT FROM AUTHOR]

Este projeto de iniciação científica para uma discente de ensino médio permitiu realizar o treinamento e capacitação de discentes no uso da ferramenta, assim como ofereceu uma avaliação do índice de volume de pesquisas realizadas por brasileiros na plataforma Google relacionado a temas de saúde bucal e estética da face e dente. A aluna de ensino médio foi acompanhada por alunos de graduação na realização de todas as atividades de pesquisa. O treinamento da discente para utilização da base Google Trends®? foi realizado ao longo do período avaliado. Os unitermos de pesquisa relacionados a estética dentária/facial - Grupo A (agrupamento de palavras-chave de temas relacionados a estética dentária e facial) e Grupo B (agrupamento de descritores de temas relacionados a saúde bucal) foram estudados e comparados. Os principais dados quantitativos do índice de volume de pesquisa (IVP) realizada por brasileiros foram tabulados a fim de comparar o perfil do brasileiro, quanto a buscas na base de dados durante o período de 2016 a 2020. Os principais resultados indicaram aumento considerável na busca de termos relacionados a área de estética dentária nos últimos anos. O unitermo "Clareamento dentário" apresentou o maior IVP médio acima de 50% e "harmonização facial" apresentou o maior aumento a partir de 2019. Conclui-se que há uma maior demanda por unitermos relacionados a estética facial/dental em ferramenta de busca Google Trends®? realizado pela população brasileira. [ABSTRACT FROM AUTHOR]

Paciente L.C.N, 70 anos, necessitava de reabilitação dos dentes 14 e 15 onde, por motivos de uma má resolução clínica no passado, apresentavam, respectivamente, tratamento endodôntico insatisfatório e trinca radicular palatina. Devida à complexidade deste caso clínico, seu estudo se mostra extremamente útil como conhecimento para uso clínico diário, tendo como objetivo apresentar a diferença positiva que um bom planejamento abrangendo o paciente como um todo e uma boa avaliação inicial com exames complementares fazem para se obter um andamento e solução do caso de forma segura e bem estruturada. Sendo assim este relato de caso irá indicar uma cronologia de atendimentos com conhecimentos multidisciplinares, dentro da área da odontologia envolvendo endodontia, periodontia, prótese e implantodontia, que solidificam a relevância da integralidade. Como resultado foi obtido um implante na região do dente 15, mais duas coroas unitárias para os elementos 15 e 14, de maneira bem-sucedida, dada não só à maneira que se foi executado, mas principalmente por como foi planejado. Sendo assim é possível afirmar que o desenvolvimento do caso clínico juntamente com a interdisciplinaridade, seguindo uma etapa lógica de procedimentos e realizando todos os exames complementares trouxe uma resolubilidade final bem aceita ao caso. [ABSTRACT FROM AUTHOR]

O objetivo deste estudo foi analisar sistematicamente a literatura sobre o efeito biológico dos cimentos endodônticos bioativos nas células tronco da polpa de dentes decíduos e permanentes. Os critérios de inclusão foram estudos in vitro, laboratoriais, observacionais em células troncos da polpa de dentes decíduos e permanentes, que verificaram o efeito biológico de cimentos endodônticos bioativos. Foram excluídos estudos verificando apenas a viabilidade/proliferação celular e citotoxicidade e estudos em outros tipos de células tronco dentárias. Dois revisores independentemente selecionaram e extraíram os dados dos estudos. A análise de sensibilidade avaliou em cada estudo: randomização, cegamento e qualidade da metodologia. A análise estatística descritiva foi usada para resumir sistematicamente os resultados dos estudos. Os CEBs aumentam a migração, mineralização, atividade da fosfatase alcalina, em SHED. Em DPSCs, a formação de nódulos de mineralização foi maior, enquanto a migração e a atividade da fosfatase alcalina apresentaram grande variação entre os estudos. Uma maior expressão dos genes e proteínas relacionados com a mineralização pelas DPSCs e SHED após o contato com CEBs foi encontrado. Poucos estudos apresentaram baixo risco de viés, portanto, recomenda-se cautela na interpretação dos resultados. Estudos futuros são necessários para avaliar os efeitos biológicos dos CEBs nas SHED e confirmar o efeito na migração e atividade da fosfatase alcalina em DPSCs. [ABSTRACT FROM AUTHOR]

O objetivo desse estudo consiste na avaliação das forças resultantes da distensão inicial de molas fechadas de Níquel titânio e a degradação dessas forças após 28 dias de distensão. Dessa forma, na amostra foram utilizadas 80 molas de níquel titânio da marca Morelli divididas em 4 grupos de 20 de acordo com o comprimento, 7, 9, 12 e 15mm, sendo que 10 molas de cada grupo foram mantidas em dispositivos simulando a distensão em 50 e 100% do seu comprimento original. As forças resultantes foram medidas com tensiômetro e comparadas com a força descrita pelo fabricante na embalagem das molas (200 gramas força). As mensurações foram realizadas logo após a distensão inicial (T1) e após 28 dias de distensão (T2). Os dispositivos foram mantidos em saliva artificial a uma temperatura de 37°C. Para a análise estatística foi utilizado teste t independente para comparação das forças em T1 com o valor do fabricante e o teste t pareado para comparação das forças entre T1 e T2. Em todos os testes estatísticos foi adotado nível de significância de 5%. Em T1, as molas de 9, 12 e 15mm distendidas em 50% apresentaram valores significantemente menores e as molas de 7 e 15mm distendidas em 100% apresentaram valores significante maiores, ambos comparados com o valor do fabricante. Todas os grupos de molas apresentaram degradação significante das forças entre T1 e T2. Portanto, faz-se necessário fazer a mensuração das forças das molas durante o tratamento ortodôntico, visando estabelecer uma força ótima para a movimentação dentária e otimizando assim o tempo total de tratamento. [ABSTRACT FROM AUTHOR]

Os elásticos correntes são usados no fechamento de espaços entre os dentes, por isso devem liberar forças suaves e contínuas para obter um maior controle sobre os movimentos dentários. Apesar da sua grande utilização, existem desvantagens como a degradação da força interferindo na movimentação dentária e na efetividade do tratamento. O objetivo deste projeto é comparar a quantidade de força inicial e sua degradação de 4 diferentes marcas comerciais de elásticos corrente estéticos. Foram avaliados 10 elásticos corrente estético de força média com 6 elos das marcas Morelli, Orthometric, Eurodonto e 3M. Os elásticos foram distendidos o dobro de seu comprimento e submersos em saliva artificial. Dessa forma, foram mensuradas as força com dinamômetro ortodôntico ao início e nos intervalos de 1, 7, 14, 21 e 30 dias após a imersão. A degradação da força foi realizada calculando o percentual de força perdida em relação à força inicial em cada intervalo de tempo, para cada grupo testado separadamente e também entre eles. A avaliação da alteração de cor foi observada por meio de fotografias dos elásticos antes e após o término do experimento. Foi adotado o teste ANOVA de medidas repetidas, tempo e grupos e para as análises de múltiplas comparações utilizou- se o teste de Tukey. Após 7 dias os grupos degradaram em torno de 50% da força inicial. Na avaliação da alteração de cor, os elásticos da marca Eurodonto apresentaram menores alterações de cor. Todas as marcas comerciais apresentaram manchamento, com os melhores resultados para os elásticos da Eurodonto. [ABSTRACT FROM AUTHOR]

Knowledge about the action of immune system in the recognition of biomaterials has been extremely helpful when it comes about understanding host response and biomaterials' fate in human body. This study aimed to investigate inflammatory response and macrophage polarization during bone healing process of rat's calvaria critical defects using different bone materials in order to evaluate their influence on bone repair and on the quality of the newly formed bone tissue. Eighty male albinus Wistar rats underwent surgical procedure for the confectioning of a 5-mm diameter bone defect in their right parietal bone, and divided in four groups (n = 20 each), according the biomaterial: AG – Control, particulate intramembranous autogenous bone graft, HA/TCP – particulate biphasic calcium phosphate with HA/TCP (60/40), DBB – particulate deproteinized bovine bone, VC – particulate bioactive vitroceramic. After 3, 7, 21, and 45 days, the specimens were removed and prepared for microcomputed tomography (microCT), light and polarized microscopy, immunohistochemical analysis, and histomorphometry. No significant differences were detected considering percentage of leukocytes among the groups and periods, as well as in relation to immunolabeling for inflammatory (M1) and reparative (M2) macrophages. However, immunolabeling for bone marker indicated a delayed osteoblast differentiation in VC group, resulting in a decrease in mineralized bone matrix parameters in this group, revealed by microCT. In addition, AG and HA/TCP presented a satisfactory bone collagenous content. Despite the distinct origins and physicochemical properties of the tested biomaterials, they presented similar immune-inflammatory responses in the present experimental model, influencing bone-related proteins and bone quality, which must be considered according to their use. • Biomaterials' physicochemical properties did not lead to significant inflammatory response and macrophage polarization. • Experimental animal model has to be considered when it comes to biomaterial behavior. • Bone formation can be influenced by the type of bone substitute. [ABSTRACT FROM AUTHOR]