The original Branemark dental implant was designed as a two-piece implant (TPI) to be used in a 2 stage surgical procedure. One
piece implant (OPI) was introduced to incorporate the transmucosal abutment as an integral part of the implant. The unibody design of
OPI mimics natural tooth with seamless transition of radicular unit to coronal unit. In recent years OPI is becoming more and more
popular because it reduces the requirement of multiple surgical procedures and prosthetic components thereby reducing the inventory
and cost. OPI is generally indicated where bone is insufficient in terms of width and height and also in cases of immediate implant
placement in fresh extraction sockets. This review of literature outlines the indications, advantages, disadvantages, surgical protocols
and prosthetic phase of OPI.