Atype of implant that is surgically inserted in the inferior border of the mandible is a(n) implant.

Transosteal

Explanation:

One of the ways to get  a missing or broken tooth fixed is through dental implants. It can also be used to fix loose teeth. For this to occur, a tooth root is needed to hold in place the dental prosthesis. Dental implants involve surgically fixing of metal frames (surgical component) into the jawbone beneath the gum to serve as the tooth root. This surgical implant, which now serves as a tooth root, enables the dentist to fix a replacement tooth.

Transosteal implant is a type of dental implant in which the surgical component is a U-shaped metal frame or pins that is inserted into the lower jaw followed by the replacement tooth on top during tooth replacement.