Minimum distance from the mental nerve to an implant?

Minimum distance from the mental nerve to an implant?

• A. 1 mm
• B. 3 mm
• C. 5 mm
• D. 7 mm

Answer: (C)

Protecting the mental nerve during mandibular implant placement hinges on keeping a safe buffer between the implant and the nerve pathway. The mental nerve exits the mandible through the mental foramen and supplies sensation to the lower lip and chin, so placing an implant too close can cause numbness or altered sensation. A minimum of 5 millimeters of clearance from the implant surface to the course of the mental nerve is commonly recommended to account for anatomical variation and healing, reducing the risk of nerve contact or compression. If this space isn’t available, consider alternative sites, angled implants, bone augmentation, or nerve repositioning, and use detailed CBCT planning to guide the procedure.

Protecting the mental nerve during mandibular implant placement hinges on keeping a safe buffer between the implant and the nerve pathway. The mental nerve exits the mandible through the mental foramen and supplies sensation to the lower lip and chin, so placing an implant too close can cause numbness or altered sensation. A minimum of 5 millimeters of clearance from the implant surface to the course of the mental nerve is commonly recommended to account for anatomical variation and healing, reducing the risk of nerve contact or compression. If this space isn’t available, consider alternative sites, angled implants, bone augmentation, or nerve repositioning, and use detailed CBCT planning to guide the procedure.