Dr. Dennis Hartlieb presents a product review on the Kois Universal Polishing System, highlighting in two parts, the system's versatility for polishing porcelain restorations and composite restorations. Overall, Dr. Hartlieb is impressed with the Kois Universal Polishing System and recommends their use in dental practices for better dentistry.

In the first part of this product review, Dr. Hartlieb focuses on the results you can achieve with porcelain restorations. He demonstrates the polishing on different examples, emphasizes the use of specific wheels and polishers at recommended speeds, and gives a few expert tips along the way.

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In the second part of this product review, Dr. Dennis Hartlieb focuses on the results you can achieve with composite restorations when using the Kois Universal Polishing System.

Overall, Dr. Hartlieb is impressed with the results from polishing composites using this system. He notes the featherlight cups and wheels produce a high gloss finish. However, he comments disks may still be needed for polishing embrasures.