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Failure rates of dental implants are significantly increased in patients taking SSRIs due to depression. Careful case analysis and history of depression may minimize the failure rates.

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Chiral imidazolidinone as an organocatalyst was developed by MacMillan and co‐workers in 2000 and they evaluated this organocatalyst originally in the enantioselective Diels‐Alder reaction. Later, this catalyst was used in a number of other asymmetric organic transformations. Chiral organocatalysts are expensive, therefore their recoverability and reusability are highly desirable to make the organic transformation economically viable for industrial application. Hence, the chiral imidazolidinone was modified and attached to different supports for its recoverability and reusability. A number of recoverable imidazolidinones have been reported in asymmetric Diels‐Alder reactions. In this review, we have summarized the reports on reusable and recoverable imidazolidinones (MacMillan catalysts) as organocatalysts in asymmetric organic transformations.magnified image

The bleaching efficacy of 10% hydrogen peroxide gel was more effective than 10% carbamide peroxide and sodium perborate in bleaching the artificially discolored primary teeth.