What polishing agent is recommended for hybrid composite and resin restorations?

Aluminum oxide is recommended for polishing hybrid composite and resin restorations because it is a fine abrasive that provides effective polishing without damaging the surface of these materials. Its hardness allows it to remove surface scratches and imperfections while also enhancing the luster of the composite or resin. This makes it ideal for achieving a smooth, glossy finish that can help improve the aesthetic appearance of restorations.

In contrast, other agents have different properties that may not be suitable. Silica gel is often used in other applications but may not provide the same level of efficacy with composites. Calcium carbonate is a gentler abrasive and is primarily used for polishing softer materials, potentially leading to inadequate results on hybrid composites. Baking soda, while a mild abrasive, may not be effective enough for achieving the desired polish on these specific materials. Therefore, aluminum oxide stands out as the most appropriate choice for ensuring the best outcomes in polishing hybrid composite and resin restorations.