What is the minimum bone thickness required for immediate implant placement during sinus lift surgery?

The minimum bone thickness required for immediate implant placement during sinus lift surgery is generally considered to be 4-5 mm. This thickness is important to provide adequate stability and support for the implant. The surrounding bone needs to be both sufficient in quantity and quality to ensure the implant can achieve osseointegration effectively.

When performing a sinus lift, the goal is to create enough space for bone grafting material and simultaneously place an implant that can engage the existing bone. If the bone is less than 4 mm thick, there is a risk of inadequate support for the implant, which may increase the likelihood of implant failure or complications during healing. This range allows for the necessary bone height that can accept an implant while also ensuring there is adequate bone for the graft material used in the sinus lift procedure.

In surgical practice, adhering to this minimum thickness helps optimize the success rate of the implants placed during or following sinus augmentation procedures.