
Sinus Bone Graft Surgery
Sinus bone graft surgery (also called sinus lift or sinus augmentation) is a procedure that adds bone to the upper jaw near the molars and premolars by lifting the sinus membrane and placing bone graft material underneath. This includes both crestal (internal) sinus lifts for minor augmentation and lateral window sinus lifts for significant bone addition, enabling successful dental implant placement in patients with insufficient upper jaw bone.
When the upper jaw lacks sufficient bone height for dental implants, sinus bone graft surgery provides the foundation needed for successful implant placement. Dr. Yoon's expertise in both crestal sinus lifts and advanced lateral window techniques ensures optimal outcomes for patients with varying degrees of bone loss.
Book a ConsultationWhat is Sinus Bone Graft Surgery?
Sinus bone graft surgery encompasses procedures that augment the bone in the upper jaw by lifting the sinus membrane and placing bone graft material in the created space. There are two main approaches: the crestal (internal) technique for minor augmentation performed through the implant site, and the lateral window technique for significant bone addition through a small window in the side of the jaw. Over 4-9 months, this graft integrates with your natural bone, creating sufficient height and density for stable dental implants.
Key Benefits
- Enables implants where bone is insufficient
- High success rate (90-95%)
- Can add 8-12mm of bone height with lateral window
- Crestal technique offers faster recovery for minor cases
- Can be combined with simultaneous implant placement
- Predictable long-term results
- Well-documented techniques with decades of success
- Restores function and aesthetics

How Sinus Bone Graft Surgery Is Performed
3D CT Imaging & Planning
Comprehensive 3D CT scan evaluates sinus anatomy, bone dimensions, and membrane thickness to determine the optimal surgical approach.
Surgical Access
For crestal technique: access through implant site. For lateral window: small rectangular window created in the side wall of the maxillary sinus.
Membrane Elevation
The Schneiderian membrane (sinus lining) is carefully elevated using specialized instruments to create space for the bone graft.
Bone Graft Placement
High-quality bone graft material is packed into the space. For lateral window, a protective membrane covers the access site.
Healing Period
4-6 months for crestal technique, 6-9 months for lateral window to allow complete bone integration.
Implant Placement
Once healed and verified by imaging, dental implants are placed in the newly augmented bone.
Recovery & Aftercare
Recovery varies based on the technique used. Crestal sinus lifts typically have minimal swelling and 3-5 days of recovery. Lateral window procedures involve moderate swelling and bruising for 5-7 days, with most patients returning to work within 2-3 days. Key post-operative instructions include: avoid blowing your nose forcefully for 2 weeks, sneeze with mouth open, don't drink through straws, avoid flying for 1-2 weeks if possible, sleep with head elevated, and take all prescribed medications as directed.
Aftercare Tips
- Apply ice packs to reduce swelling (20 minutes on, 20 minutes off)
- Take prescribed antibiotics to prevent infection
- Use saline nasal spray as directed to keep sinuses moist
- Eat soft foods for the first week
- Avoid smoking which significantly impairs healing
- Attend all follow-up appointments for monitoring
Why Choose BK Dental for Sinus Bone Graft Surgery?
Frequently Asked Questions About Sinus Bone Graft Surgery

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