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The article titled "Effectiveness of dental bleaching in its different presentations in smoking patients" presents a study on the effectiveness of dental bleaching in smoking patients. Three methods of dental bleaching were used: in-office, at-home as indicated by the professional, and over-the-counter. Fifteen patients were recorded, and it was observed that the in-office method was the most effective in changing coloration, although hypersensitivity was presented as a disadvantage. In conclusion, in-office dental bleaching is considered the first alternative to improve the appearance of pigmented teeth in smoking patients. [Extracted from the article]