Microfill is a term used in dentistry to describe a type of dental composite material that has very small particle sizes. Some synonyms for microfill include nano-hybrid, micro-hybrid, and nano-filled. Nano-hybrid is often used to describe dental composites with a blend of micro- and nano-sized particles, providing both strength and aesthetics. Micro-hybrid refers to dental composites that contain larger particles to give them improved strength and wear resistance. Lastly, nano-filled composites are composed of nanoparticles that provide excellent polishability and aesthetics. Regardless of the term used, these dental composites offer a range of properties that make them ideal for use in a variety of dental procedures.