What is platform switching in dental implants?

• A. When the abutment diameter is smaller than the implant diameter
• B. When both abutment and implant diameters are identical
• C. When the implant is placed at an angle
• D. When the implant is larger than the abutment diameter

Answer: (A)

Platform switching in dental implants refers to when the abutment diameter is smaller than the implant diameter. This technique helps in managing soft tissue dimensions and reducing the bone resorption that can occur around dental implants. By utilizing a smaller abutment, the implant's platform is effectively shifted inward, which preserves the marginal bone and can lead to improved aesthetic results and reduced complications such as bone loss.

This approach not only aids in the maintenance of bone levels but also enhances the overall stability of the implant by allowing for a better fit of the restoration while still accommodating the necessary biological width. It is an important consideration in implant design and placement, particularly in areas where esthetics and periodontal health are a concern.