Which statement about implant materials is supported by the information?

• A. Titanium and titanium alloys are among the most common
• B. Stainless steel is the most common
• C. Zirconia is the only material used
• D. Copper alloys are common

Answer: (A)

Implant materials are chosen for biocompatibility, resistance to the oral environment, and the ability to bond with bone (osseointegration). Titanium and its alloys stand out because they naturally form a stable, protective oxide layer that resists corrosion in saliva and other body fluids, while offering a favorable strength-to-weight ratio. This combination lets bone tissue attach securely to the implant surface over time, which is essential for long-term stability. Because of these qualities, titanium-based implants have become the standard and are among the most common choices.

Stainless steel, while strong, does not offer the same corrosion resistance and long-term biocompatibility in the chloride-rich oral environment, so it isn’t the most common implant material. Zirconia is used in some cases, particularly for aesthetics or metal-free restorations, but it is not the only material used. Copper alloys are not used for dental implants due to poorer biocompatibility and corrosion concerns.