Conventional composites are characterized by which type of filler particles?

Conventional composites are characterized by the presence of larger filler particles, which contribute to increased strength and durability of the material. These larger particles allow for a more robust composite that can withstand the forces of biting and chewing, making them suitable for posterior restorations where strength is paramount. The size of the filler particles can also affect the physical properties of the composite, including its viscosity and handling characteristics.

While smaller filler particles lead to improved polishability and are often used in different types of composites, it is the larger particles in conventional composites that provide the primary benefit of enhanced strength. The other choices reference types of composites or characteristics that are not representative of conventional composites specifically, thus confirming that larger filler particles are the defining feature for their use in restorative dentistry.