Which property generally distinguishes packable composites from hybrid composites?

Packable composites are designed specifically for posterior restorations, where strength and durability under occlusal forces are essential. They contain larger filler particles, which increases their viscosity and makes them thicker, allowing them to withstand the stresses of chewing. However, hybrid composites have a balance of smaller and larger filler particles, leading to a blend of strength and esthetics, which typically results in a higher overall filler content on average compared to packable composites.

The higher filler content in hybrid composites contributes to improved mechanical properties such as strength and resistance to wear, while still allowing for a smoother surface finish and better esthetic qualities. This is particularly advantageous for anterior restorations or areas where visibility is a consideration. The distinctive property that differentiates packable from hybrid composites lies within the balance of their filler particle characteristics, with hybrid composites often achieving a higher level of filler content to optimize performance in various clinical situations.