Tratamento de mucocele com a técnica de shira: relato de caso / Treatment of mucocele with shira's technique: case report

O termo mucocele pode ser definido como ''cavidade patológica contendo muco'', sendo este conteúdo proveniente das glândulas salivares menores. Enquadrando-se como um processo patológico destas glândulas. A mucocele pode ser caracterizada pelo fenômeno de extravasamento ou de retenção de muco, dando-se o diagnóstico somente através da análise microscópica. Clinicamente apresenta-se como um nódulo indolor, circunscrito, normocrômico ou azulado e flutuante à palpação, localiza-se predominantemente no lábio inferior. A escolha do tratamento partirá da análise de alguns fatores, como o tamanho da lesão, a sua localização, profundidade e a idade do paciente, sendo a excisão cirúrgica juntamente com as glândulas acessórias da lesão a mais indicada. Há várias técnicas para realização de tal procedimento e a técnica de Shira foi a opção para o referido relato de caso. Esta técnica se dá a partir da injeção cuidadosa de material hidrocolóide irreversível (alginato) dentro da lesão previamente esvaziada de seu conteúdo com o objetivo de delimitar a mesma e facilitar a remoção cirúrgica. Utilizar esta técnica reduz as chances de recidiva da lesão, pois com a utilização do alginato a lesão fica bem delimitada facilitando a excisão cirúrgica, mas mesmo com esta técnica deve-se orientar o paciente para a remoção dos fatores etiológicos envolvidos, pois sua permanência acarretará na recidiva da lesão(AU)

The term mucocele can be defined as a 'pathological cavity containing mucus', and this content comes from the minor salivary glands, fitting in as a pathological process of these glands. Mucocele can be characterized by the mucous extravasation or retention phenomena, giving the diagnosis only through microscopic analysis. Clinically it is presented as a painless, circumscribed, normochromic or bluish nodule floating on palpation. It is predominantly located on the lower lip. The choice of treatment will depend on the analysis of some factors, such as the size of the lesion, its location, depth and the age of the patient. Surgical excision together with the accessory glands of the lesion is the most indicated. There are several techniques for performing such a procedure and the Shira technique was the option for this case report. This technique is based on the careful injection of irreversible hydrocolloid material (alginate) into the lesion previously emptied of its mucoid content in order to delimit it and facilitate surgical removal. Using this technique reduces the chances of recurrence of the lesion, because with the use of alginate the lesion is well delimited facilitating surgical excision, but even with this technique the patient should be guided to remove the etiological factors involved, since its permanence will lead to recurrence of the lesion(AU)

Avaliação da solubilidade e sorção em água de alguns materiais restauradores diretos / Evaluation of solubility and sorption in water of some direct restorative materials

Resumo Introdução A solubilidade e sorção dos materiais restauradores são considerados fatores críticos, pois podem interferir na qualidade e durabilidade das restaurações. Objetivo Avaliar a solubilidade e sorção de água de alguns materiais restauradores. Material e método Foram confeccionados quatorze espécimes de cada um dos seguintes materiais: Equia® Forte, Z100, Fuji IX/ e Vidrion R, os quais foram levados a uma dessecadora e pesados diariamente até estabilização. Em seguida, foram inseridos em recipientes individuais contendo 40 mL de água destilada cada e divididos em dois grupos de acordo com o tempo de armazenagem: 7 ou 30 dias. Ao final de cada período, os espécimes foram retirados da água, pesados, levados à dessecadora e pesados novamente até estabilização. Os resultados foram analisados estatisticamente utilizando os testes ANOVA 2 critérios e Tukey. Resultado Com exceção do Equia® Forte e Z100, os demais materiais, apresentaram uma variação significativa da solubilidade ao longo do tempo. Quanto à sorção, observa-se que apenas o material Z100 não apresentou diferença significativa em relação ao tempo de armazenagem, mas, na comparação entre os materiais, todos apresentaram diferenças significativas em ambos os períodos. Conclusão Após os períodos de armazenagem de 7 e 30 dias em água, os materiais restauradores Equia® Forte e Z100 não apresentam variação significativa da solubilidade, sendo mais estáveis que os materiais Fuji IX e Vidrion R. Os materiais à base de ionômero de vidro, Equia® Forte, Fuji IX e Vidrion R, sofrem mais sorção em água quando comparados ao material Z100 em ambos os períodos.

Abstract Introduction The solubility and sorption parameters of restorative materials are considered critical factors since they may interfere with the quality and durability of restorations. Objective The aim of this study was to evaluate the solubility and water sorption of some restorative materials. Material and method Fourteen specimens were made (10.0 mm x 2.0 mm) of each of the following material: Equia® Forte, Z100, Fuji IX/ e Vidrion R, then taken to a desiccator and weighed daily until stabilized. They were then placed in individual containers with 40mL of distilled water each and divided into two groups according to the storage time: 7 or 30 days. At the end of each period, the specimens were removed from the water, weighed, taken to the desiccator and weighed again until stabilized. The results were analyzed statistically with two-way ANOVA and Tukey. Result Except for Equia® Forte and Z100, the other materials presented a significant variation of solubility over time. As for sorption, it was noticed that only Z100 presented no significant difference in relation to the storage time, but in comparison of the materials, all had significant differences in both 7 and 30 days periods. Conclusion After storage periods of 7 and 30 days in water, the restorative materials Equia® Forte and Z100 do not present significant variation of solubility, being more stable than the materials Fuji IX and Vidrion R. The glass ionomer-based materials, Equia® Forte, Fuji IX and Vidrion R, suffer more sorption in water when compared to Z100 material in both periods.

Dental Environment Stress: Findings among Lusophone Dental Students

Objective: To perform cross-cultural adaptation of the Dental Environment Stress (DES), to test its construct validity and reliability, and to identify the sources of stress among Brazilian dental students. Material and Methods: The DES was transculturally adapted to Portuguese using translation/back-translation, review by an expert bilingual committee and consensus building. The first version was tested in a sample of 42 dental students to check the understanding level of the alternatives. The final version was applied to all the students enrolled in a Brazilian Public Dental School. Construct validity was assessed through factor analysis, performed by principal components analysis and Varimax rotation and reliability by internal Cronbach's alpha coefficient (95% CI). Wilcoxon rank sum was conducted to test for gender and Kruskall-Wallis for year comparison. Multivariate analysis relied on ordinal logistic regression modeling. Results: Factor analysis revealed five factors that possessed eigenvalues greater than 1.5 and together explained 46.88% of the total variance. Internal consistency of each factor was adequate, with Cronbach's alpha ranging from 0.65 to 0.84. 'Examinations and grades' (82.80%) was the highest scored item. Females presented higher rates, as well as second's and fifth's years students. The entering students were generally concerned with factors related to "Academic Performance", whereas clinical year students with "Insecurity Concerning their Professional Future". Conclusion: The Portuguese version of the DES presented good results, thus it could be a valid instrument to assess the factors of perceived stress in Lusophone countries, subsidizing the development of strategies to minimize the stress and optimize school performance.