ABSTRACT
Aim: this study assessed the patients' perception of the outcomes of prosthetic treatment in a University of Southern Brazil. Methods: patients seeking for prosthetic treatment were invited to answer a questionnaire with 41 items about the potential risks, benefits, and consequences of no treatment. Answers were obtained according to a five-item Likert-scale varying from 1 (completely disagree) to 5 (completely agree). Sociodemographic data was included in the comparison. Mann-Whitney or Kruskal-Wallis (95%) compared data depending on the variable. Results: two-hundred twenty-five patients answered the questionnaire. Median age of participants was 45-54 years. The potential benefits were similar among participants irrespective of the variable adopted. The perception of risks was significant influenced by variables gender, age, education level, type of edentulous space, prior treatment with prosthodontics, type of prosthodontics, and prosthodontics usage in years. Consequences of no treatment were affected by age, prior treatment with prosthodontics, and prosthodontics usage in years. Conclusions: the study showed the fundamental importance of correct elucidation about the potential risks (negative perception) in the initial appointment for the studied population. Elucidation about the consequences of no treatment are relevant because some differences were seen into the variables. Prosthodontics patients from the city of Passo Fundo seem well informed about the benefits of the prosthetic treatment, besides the significant influence of some sociodemographic and prosthetic conditions
Subject(s)
Humans , Male , Female , Self Concept , Dental Prosthesis , Education, Dental , Surveys and QuestionnairesABSTRACT
Introdução: a doença periodontal representa um fator de risco para o câncer bucal, uma vez que resulta no aumento na produção de espécies oxigênio-reativas, devido ao processo inflamatório em nível local e sistêmico. Essas substâncias interferem na estabilidade celular, podendo resultar no aumento da frequência de micronúcleos, que podem atuar como marcadores biológicos. Objetivo: buscar evidências científicas que demonstrem a relação entre a doença periodontal e a frequência elevada de micronúcleos. Métodos: a pesquisa foi realizada por meio de uma revisão sistemática da literatura em bases de dados científicas, utilizando os seguintes descritores: a) na Bireme: doença periodontal e micronúcleos; doença periodontal e análise citogenética; b) na PubMed: periodontal disease and micronuclei; periodontal disease and cytogenetic analysis. Resultados: a busca nas bases de dados totalizou 96 artigos. Desses, foram encontrados 3 na Bireme e 93 na PubMed. Dos 96 artigos encontrados, somente 4 responderam a questão norteadora. Desses, somente dois estudaram a relação entre a doença periodontal e outros fatores com a produção de micronúcleos. Os outros dois estudaram essa relação de forma isolada. Apenas em um artigo não foi observada significância estatística para a relação entre a frequência elevada de micronúcleos em sujeitos com a doença periodontal, quando comparados com sujeitos sem a doença. Em três dos quatro trabalhos, foi observada significância estatística entre esses fatores. Conclusão: sendo assim, destaca-se a importância em desenvolver estudos posteriores visando fortalecer essas evidências científicas, para que, futuramente, a análise de micronúcleos possa ser utilizada como um critério de controle prévio da carcinogênese.
ABSTRACT
Abstract The influence of inorganic filler content of resin-based luting agents (RBLAs) on color change (ΔE00), CIEL*a*b* (individual color coordinates), and translucency parameters (TP) of simulated ceramic laminate veneer (CLV) was investigated. RBLAs with low, intermediate, and high inorganic filler content (55%, 65%, and 75% mass fractions, respectively) were prepared. Feldspar ceramic (Vitablocs Mark II) specimens (1.2 mm × 0.8 mm, A1C shade) were bonded to simulated composite resin substrates (1.6 mm × 1.2 mm, A2D shade) using three experimental and a commercial (RelyX Veneer) RBLA (translucent shade). The ΔE00 was calculated by CIEDE2000 color difference metric under three conditions (before, immediately after, and 24 h after luting). The TP was calculated using CIEL*a*b* color coordinates measured over white and black backgrounds. Surface morphology of the RBLAs was analyzed. One-way and two-way analyses of variance with a post-hoc Tukey's test were used respectively to calculate TP, CIEL*a*b* coordinates, and ΔE00 (α= 0.05). Overall, the tested RBLAs presented clinically visible ∆E00 values under the three conditions evaluated. For all RBLAs, higher ∆E00 values were observed between measurements obtained before and immediately after luting. Different inorganic filler content did not significantly increase the opacity of the ceramic-luting agents-resin composite set. The variation in inorganic filler content did not influence significantly the TP of simulated CLV; although all of the experimental RBLAs tested yielded ∆E00 above the perceptibility threshold. The L*, a*, and b* individual color coordinates were cementation-dependent.
Subject(s)
Prosthesis Coloring/methods , Resin Cements/chemistry , Dental Veneers , Reference Values , Surface Properties , Time Factors , Materials Testing , Microscopy, Electron, Scanning , Ceramics/chemistry , Reproducibility of Results , Color , Colorimetry , Statistics, NonparametricABSTRACT
A adequada estética do sorriso é cada vez mais almejada pelo paciente e pelo profissional. Dentes escurecidos e com lesões de abfração, causadas por excessiva carga oclusal, desfavorecem o agradável aspecto dos dentes e a estética facial como um todo. Este caso clínico relatou o procedimento restaurador de dentes anteriores superiores que apresentavam cor e forma inadequadas. Foram confeccionadas facetas e coroas com cerâmica termoprensada reforçada por dissilicato de lítio (IPS e.max Press, Ivoclar), que tem sido frequentemente utilizada na confecção de restaurações em dentes anteriores e posteriores por apresentar propriedades estéticas e mecânicas satisfatórias. Após a reabilitação, pôde-se perceber que o detalhado planejamento do tratamento e a correta escolha do material restaurador resultaram no restabelecimento funcional e estético. Foi possível concluir que restaurações obtidas a partir da cerâmica de dissilicato de lítio mostraram ser uma ótima alternativa para a confecção de facetas e coroas, considerando que houve perfeita concordância de cor entre ambas as restaurações, resultando no sucesso do tratamento e satisfação do paciente.
Adequate aesthetic appearance of the smile is increasingly desired by patient and professional. Darkened teeth and abfraction injuries caused by excessive occlusal load jeopardizes the appearance of the teeth, and the facial aesthetics as a whole. This case describes the restorative treatment of upper anterior teeth that presented inadequate color and form. Crowns and laminate veneers were made with lithium disilicate ceramic, which has often been used in the fabrication of anterior tooth restorations because it presents satisfactory aesthetic and mechanical properties. After the restorative process, it can be concluded that the detailed treatment planning and the correct choice of restorative material result in the reestablishment of function and aesthetics. It was concluded that the lithium disilicate ceramic showed to be an excellent alternative for making laminate veneers and adjacent crowns, considering that there was perfect color matching between both restorations, resulting in the success of treatment and patient satisfaction.