139 139 Braz Dent Sci 2017 Apr/Jun;20(2) CASE REPORT Enamel microabrasion associated with resin infiltration technique: a clinical report Microabrasão do esmalte associada à técnica de infiltração de resina: Relato clínico Alexandra Rubin COCCO 1 , Jean Chaves PEREIRA 1 , Karoline Von Ahn PINTO 1 , Rafael Guerra LUND 1 , Josué MARTOS 1 1 – Department of Dentistry - College of Dentistry - Federal University of Pelotas - RS - Brazil. Resumo A presença generalizada de manchas, particularmente nos dentes anteriores, proporciona uma aparência antiestética com impacto negativo sobre o paciente. O objetivo deste trabalho é relatar um caso clínico de severas alterações cromáticas e tratadas com microabrasão de esmalte associada à infiltração com uma resina de baixa viscosidade. A intensa pigmentação acastanhada e as manchas brancas de fluorose perderam a sua aparência esbranquiçada e se assemelharam ao esmalte sadio. Essa associação de técnicas, que pode ser uma alternativa ao mascaramento em pigmentações intensas, mostrou ótimos resultados estéticos. AbstRAct The generalized presence of stains, particularly on anterior teeth, provides an unaesthetic appearance with a negative impact on the patient. The aim of this paper is to report a case of severe chromatic alterations treated with enamel microabrasion associated with infiltration of low-viscosity resin. The intense brownish pigmentation and white spots of fluorosis lose their whitish appearance and look similar to sound enamel. This association of techniques, which might be an alternative to white-masking of intense pigmentation, showed optimal aesthetic results. KeYWoRDs Aesthetics; Brown pigmentation; Enamel microabrasion; Low-viscosity resin. PAlAvRAs-chAve Estética; Pigmentação marrom; Microabrasão de esmalte; Resina de baixa viscosidade. doi: 10.14295/bds.2017.v20i2.1292 UNIVERSIDADE ESTADUAL PAULISTA “JÚLIO DE MESQUITA FILHO” Instituto de Ciência e Tecnologia Campus de São José dos Campos Ciência Odontológica Brasileira INtRoDuctIoN T he development of hard dental tissue defects disturbs the dental matrices and mineralization during odontogenesis [1]. These defects may compromise the appearance of dental elements, affecting patients’ self- esteem and quality of life. Intrinsic stains are among these factors that compromise the oral appearance, including intrinsic stains [2,3]. Intrinsic stains may be resolved aggressively by the removal of several millimeters of tooth surface to replace with an adequate thickness of direct/indirect material to hide stains and rebuild the tooth [4] However, they may also be removed more conservatively by microabrasion and resin infiltration. Microabrasion is a technique that enables the removal of white, yellow, and brown dental enamel stains of intrinsic character [3], obtaining satisfactory cosmetic results with little dental wear [2,5-7]. In addition to being conservative, this technique offers other advantages, such as simplicity of execution and low cost [8]. Another conservative treatment is low viscosity resin infiltration, which is used as an alternative for the treatment of incipient caries. As a side effect, resin infiltration has been shown to camouflage carious lesions in enamel [9]. Positive aesthetic results were found with Ciência Odontológica Brasileira Benign fibrous histiocytoma of the tongue: a case report