Bone Graft Failure:Sometimes bone graft material does not integrate with existing bone due to poor blood supply.
H/O Repeated Sinusitis:Patients with a repeated history of sinusitis we cannot subject them to this procedure.
Cost Of Sinus Lift:Apart from the surgeons charges , bone graft material is very expensive.
Very Invasive:Patients are often subjected to repeated surgeries.
Time Consuming:Often 6 months to 1 year,if implant is placed along with sinus lift, patient has to wait for 6 months before teeth are fixed. In cases where placement of implant is delayed (alveolar height less than 5 mm) 4 months for bone graft to osseointegrate and 6 months for implant osseointegration.
HOW DO WE MANAGE: by two methods!
1. SINUS BYPASS: With tubero pterygoid implants.
One implant is placed anterior to sinus with distal tilt and one placed posterior to sinus with mesial tilt.
2. TRANS SINUS IMPLANTS:
Basal implants provide simple,less invasive and cost effective alternative to sinus lifts where patients can get fixed, functional permanent teeth in 3 days.