This study investigated the effects of oxygen inhibition and finishing/polishing procedures on the composite resin properties. One bulk-fill and two conventional composite resins (nanoparticle and microhybrid) were evaluated. Specimens were prepared using 4 surface treatments: control, no treatment; Gly, oxygen inhibition with glycerin; FP, finishing and polishing; Gly + FP, glycerin followed by finishing and polishing. The degree of conversion (DC) was measured using Fourier Transformed Infrared Spectroscopy (FTIR) immediately and after 15 days (n=5). Color stability (ΔEab, and ΔE00) and opacity were evaluated using a spectrophotometer after 15 days of immersion in coffee, using the CIELAB system (n=5). Data were analyzed by two-way ANOVA and Tukey tests (α=0.05) and opacity by two-way repeated-measures ANOVA. Glycerin usage increased significantly the DC however had no influence on the ΔEab, ΔE00 and, opacity values. Finishing and polishing reduced ΔEab and ΔE00 values, regardless of composite resins. Microhybrid showed higher opacity, followed by the nanoparticle and bulk fill, regardless of surface treatment. Post-polymerization polishing procedures resulted in lower conversion than using an oxygen inhibitor agent (Gly condition), but similar staining caused by coffee.
Temporomandibular dysfunction (TMD) is complex and multifactorial. Its etiology involves various factors, such as malocclusion, psychological patterns, parafunctional habits, and the temporomandibular joint anatomy. Symptoms include myofascial pain, joint clicking, mouth opening limitation, headaches, earaches, and neck pain, comprising one of the greatest causes of nondental pain. Acupuncture has been used to treat these conditions by acting locally both in muscle relaxation and pain management as well as reaching physical, mental, and emotional balance. The aim of this study is to present a brief literature review reporting the efficacy of acupuncture on TMDs and a case report in which the painful symptomatology of TMD was treated with a systemic protocol, based on scientific evidence and concepts of traditional Chinese medicine. Acupuncture may be a complementary treatment for TMD, and in this case report, it eliminated the patient’s painful symptomatology.
Introdução: A hiperplasia gengival é comum em pacientes portadores de aparelho ortodôntico fixo que apresentam má higiene bucal. Esse aumento gengival é caracterizado por um desenvolvimento lento, contínuo e por vezes assintomático. Clinicamente a hiperplasia gengival apresenta-se como um contorno irregular e edemaciada, fazendo com que seja adotada uma abordagem cirúrgica para proporcionar contorno regular da margem gengival, devolvendo estética e função ao tecido periodontal. A classificação das hiperplasias são definidas de acordo com o fator causal, nesse caso em questão trata-se de uma hiperplasia causada por trauma ortodôntico associada a deficiente higienização. Objetivo: O objetivo desse trabalho consiste em relatar um caso clínico de uma paciente com hiperplasia gengival, com queixa estética e tratada cirurgicamente por excisão cirúrgica. Relato de caso: Paciente gênero feminino, 22 anos, fazia uso de aparelho ortodôntico e durante exame clínico foi constatado o aumento tecidual gengival e extensão com a sonda periodontal, além da presença de biofilme nos bráquetes e margem gengival. Tratamento de escolha foi a gengivoplastia na qual foi realizada a excisão cirúrgica da gengiva edemaciada, respeitando o espaço biológico de 3mm e sem nenhuma complicação. Foram feitas recomendações pós-operatórias e obteve-se um pós operatório satisfatório alçando os resultados esperados. Conclusão: É necessário que além da cirurgia, o paciente mantenha uma higiene bucal adequada para não haver recidivas da hiperplasia gengival.
Objective: This laboratory randomized study was designed to evaluate the effect of polishing on roughness and color stability of bleached teeth after coffee immersion.Materials and Methods: Ninety bovine crowns were randomly allocated to six groups (n = 15), according to bleaching protocols: At-home: standard protocol using 10% hydrogen peroxide (HP) or In-office: standard protocol using 35% HP; and with polishing protocols: (1) no polishing, (2) bleached enamel polished with #0.5 μm or (3) #2-4 μm diamond particles grit pastes. Samples were daily immersed into coffee solution for 45 min followed by mechanical brushing simulation (30 s) for 30 days.The surface roughness (Ra) and color alteration, expressed by ΔE ab , ΔE 00 , and whitening index (WI) were analyzed at baseline, after bleaching/polishing protocols and after coffee solution staining. The surface from each group was examined using a scanning electron microscope. Data were analyzed by two-way repeated measure analysis of variance followed by the Tukey test (α = 0.05).Results: Staining increases Ra, ΔE ab , ΔE 00 , and decreases WI values. Polishing after bleaching did not prevent staining, however, tooth polished with #0.5 μ-grit polishing paste showed better performance than #2-4 μ-grit (ΔE ab : p = 0.001/ΔE 00 : p = 0.003). Scanning electron microscope revealed a more irregular surface after coffee staining for all groups regardless bleaching/polishing protocols.Conclusions: Using #0.5 μ-grit diamond paste to polish 35%HP in-office bleached enamel reduces the roughness and tooth staining. However, polishing after 10%HP at-home bleached enamel neither affects roughness nor improves tooth color stability after exposure to coffee.Clinical Significance: Polishing after at-home bleaching does not have benefits but after 35% hydrogen peroxide in-office bleaching, the polishing with #0.5 μ-grit polishing paste is indicated to reduce roughness and the tooth staining over time.
Introdução: Acidentes comunicação buco-sinusal refere-se a comunicação de origem iatrogênica entre a cavidade bucal e o seio maxilar (espaço caracterizado como pneumático localizado bilateralmente no osso maxilar), estando essa comunicação associada a extrações de dentes posteriores superiores, podendo ainda ocorrer não somente a descontinuidade na linha radiográfica que limita o assoalho maxilar como também o deslocamento de raízes de dentes superiores causado pelo uso de técnicas inadequadas gerando dessa forma possíveis alterações de natureza inflamatória/infecciosa no paciente. Sua principal forma de tratamento é cirúrgica realizada por retalhos palatino, vestibulares ou rotações de retalho de corpo adiposo. Objetivo: O presente artigo tem por objetivo relatar um caso de deslocamento de raiz de segundo molar superior para o seio maxilar após tentativa de exodontia da unidade dental. Relato de Caso: A paciente P.S.A, do sexo feminino, 35 anos de idade, parda, sem histórico de doenças crônicas, compareceu ao consultório com encaminhamento para avaliação clínica e radiográfica de uma complicação pós-cirúrgica.Após avaliação radiográfica ediagnóstico de deslocamento da raiz para o seio maxilar, a paciente foi submetida a técnica de Caldwell-Luc para retirada da raiz, sutura e proservação. Conclusão: A escolha correta da técnica a ser utilizada associada a uma anamnese minuciosa e exames complementares é indispensável para impedir que iatrogenias possam causar comunicação buco-sinusal.
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