RESUMO
CONTEXT: The aims of this study were (i) to evaluate the color stability of two orthodontic adhesives and (ii) to evaluate the color stability of enamel and ceramic brackets bonded with orthodontic adhesives after exposure to different staining agents. MATERIALS AND METHODS: Disks were prepared with two orthodontic adhesives (Transbond and Enlight). Color stability evaluation was performed with a spectrophotometer using CIELab parameters. The specimens were divided into four groups and immersed in the following staining agents (n = 5): distilled water (control), coffee, red wine, and cola soft drink, for 1 h/day for 120 days. Twenty molar crowns were also used. The baseline color of enamel was obtained and ceramic brackets were bonded with the orthodontic adhesives. The enamel specimens were divided into four groups and immersed in the same staining agents. After 120 days, another color reading with the brackets in position was taken. The brackets were then removed and the enamel color was again evaluated. Color difference (ΔE) in different time periods was determined and the data were analyzed by ANOVA and Tukey's test (α = 5%). RESULTS: Transbond showed lower ΔE than Enlight. Water, cola, and coffee had the lowest ΔE values. Immersion in wine showed the highest ΔE values. For time, the lower ΔE values were found for 24 h and 7 days. Storage times of 60, 90, and 120 days showed the highest ΔE values. ΔE for enamel showed significant differences only for time. CONCLUSION: Adhesive, staining agents, and storage time influenced the color stability of orthodontic adhesives.
Assuntos
Cimentos Dentários , Braquetes Ortodônticos , Cor , Esmalte Dentário , Teste de Materiais , Cimentos de Resina , Coloração e Rotulagem , Propriedades de SuperfícieRESUMO
La remodelación cosmética de los dientes naturales es una modalidad de tratamiento con beneficios estéticos que puede ser considerada económica y conservadora. No obstante, demanda del profesional no solo restaurar una sonrisa armoniosa, sino también, al mismo tiempo preocuparse con el aspecto funcional del tratamiento. Además, la remodelación cosmética pude ser relacionada a otros recursos operatorios como los restauradores adhesivos directos, proporcionando resultados aún más satisfactorios a los pacientes. De esta manera, este trabajo tiene por objetivo presentar un caso clínico, en el cual la remodelación cosmética asociada a diferentes recursos operatorios, puede ser empleada como una opción de tratamiento estético conservador.
Cosmetic contouring of natural teeth is a treatment with aesthetic benefits that can be considered economical as well as conservative. The dental professional has however not only to restore the smile harmony, but the functional aspects have to be considered at the same time in the treatment planning. Other treatments such as direct adhesive restorative treatments may additionally be used to provide better outcomes to the patients. The aim of the present work thus is to present a case of cosmetic contouring as a suitable aesthetic treatment option.
RESUMO
En Odontología, un problema observado constantemente en pacientes adultos en este inicio de siglo es sin duda, el desgaste dental patológico. Este tipo de desgaste ocurre cuando existe pérdida acentuada de la estructura dentaria, lo que generalmente ocasiona el compromiso estético de los dientes antero superiores. En consecuencia, la sociedad se está concientizando sobre la importancia de la salud y de la estética, de esta manera, la demanda por tratamientos estéticos rehabilitadores en casos de desgaste dental patológico ha aumentado. La rehabilitación estética puede ser realizada tanto por medio de tratamientos directos como indirectos. Debido a las ventajas de las resinas compuestas, el presente trabajo tiene por finalidad describir la técnica operatoria para el restablecimiento de la guía anterior con resina compuesta, mediante la técnica de estratificación, que permite simular las características ópticas de la estructura dental. Así, con la evolución de los sistemas adhesivos, asociado a las mejoras en las propiedades químicas, mecánicas y estéticas de las resinas compuestas, tratamientos restauradores extensos, como la reconstrucción directa de las guías anteriores en los casos de desgaste dental patológico, se tornan viables.
In Dentistry, a common problem observed in this beginning of century is the pathologic tooth wear. This type of wear occurs when there is accentuated loss of tooth structure, which frequently results in aesthetic compromise of the anterior maxillary teeth. As a result of the societys awareness of the importance of health and aesthetics, the request for reparative aesthetic treatments in cases of pathologic tooth wear has increased. This aesthetic rehabilitation may be achieved either through indirect or direct treatments. Due to the advantages of the resin composites, the aim of the present paper is to show specifically the direct approach throughout the use of a layering technique to simulate the optical characteristics of the tooth structure. Hence with the evolution of the adhesive systems associated with improving in the chemical-mechanical-aesthetical charecterics of the resin composites, extensive restorative treatments as the direct reconstruction of the anterior guidance in cases of pathologic tooth wear are now feasible.