Which term is an inorganic material that adds strength and other characteristics to composite resins?

• A. Filler
• B. Coupling Agent
• C. Gold
• D. Force

Answer: (A)

The key idea here is that fillers are the inorganic material added to composite resins to boost strength and modify other properties. These inorganic particles, often silica or glass, reinforce the resin, reduce polymerization shrinkage, improve wear resistance, and help control handling and radiopacity. The coupling agent is a separate component that bonds the filler to the resin, enhancing stress transfer, but it is not the filler itself. Gold isn’t used as a typical filler in dental composites, and force isn’t a material used for this purpose.