Enhancing Bone Volume in the Upper Jaw for Secure Implant Placement
Sinus lifting, also known as sinus augmentation, is a surgical procedure performed to increase bone height in the upper jaw (posterior maxilla) by lifting the sinus membrane and filling the space beneath it with bone graft material. This technique creates a solid foundation for implant placement in areas where the bone is too thin or insufficient due to natural anatomy or previous tooth loss.
Why Sinus Lifting Is Needed
After tooth extraction in the upper posterior region, bone resorption occurs naturally over time, and the maxillary sinus (air cavity above the upper jaw) expands downward.
As a result, the remaining bone height may not be adequate for placing dental implants.
Sinus lifting solves this problem by elevating the sinus membrane and filling the gap with bone graft material to achieve the ideal bone volume for implant stability.
Types of Sinus Lift Procedures
There are two main sinus lift techniques depending on the amount of bone available:
- Open Sinus Lift (Lateral Window Technique): Used when bone height is less than 5 mm. In this technique, a small window is opened on the side of the upper jaw to access the sinus membrane. The membrane is gently lifted, and bone graft material is placed beneath it. This procedure allows for significant bone augmentation and is typically followed by a healing period of 4–6 months before implant placement.
- Closed Sinus Lift (Crestal Approach): Applied when bone height is more than 5 mm but still insufficient for an implant. The sinus membrane is accessed through the implant socket, and a smaller amount of graft material is placed. In most cases, the implant can be placed during the same session. This method is less invasive and has a shorter recovery period.
Procedure Steps
1. Preoperative Assessment
3D tomography or panoramic imaging is used to assess sinus anatomy and bone height. The dentist selects the most suitable technique (open or closed) based on measurements and clinical conditions.
2. Anaesthesia and Access
Local anaesthesia or sedation is administered to ensure patient comfort. The sinus membrane is accessed via a small opening in the bone.
3. Membrane Elevation and Bone Grafting
The sinus membrane is gently lifted, and bone graft material (autogenous, xenograft, or synthetic) is inserted into the created space. The graft stimulates new bone formation over time.
4. Healing Phase
The grafted area is left to heal and integrate with natural bone tissue for 3–6 months (depending on the technique and graft type). After full integration, the implant is placed securely in the regenerated bone.
Benefits of Sinus Lifting
- Enables implant placement in cases with insufficient bone
- Prevents complications caused by low bone density
- Increases the stability and success rate of implants
- Restores the natural shape and contour of the upper jaw
- Provides a long-term, healthy foundation for dental restorations
Sinus lifting is a predictable and safe procedure when performed with advanced imaging, sterile surgical technique, and high-quality graft materials.
Post-Operative Care
- Mild swelling or sinus pressure may occur; this is temporary
- Avoid forceful nose-blowing, sneezing, or air pressure changes for several days
- Use prescribed antibiotics and anti-inflammatory medications as directed
- Maintain oral hygiene carefully without disturbing the surgical area
- Attend all follow-up visits for monitoring and healing assessment
Following these guidelines ensures optimal bone regeneration and implant success.
Frequently Asked Questions
Is the procedure painful?
No. It is performed under local anaesthesia or sedation, and post-operative discomfort is minimal.
How long is the healing period?
Depending on the amount of grafting, it generally takes 3 to 6 months for new bone to form before implant placement.
Can implants be placed during the same session?
Yes. In closed sinus lift procedures with sufficient bone height, the implant can be placed simultaneously.
Is sinus lifting risky?
No. When performed by an experienced oral surgeon using 3D imaging and proper technique, it is a safe and predictable procedure.
Conclusion
Sinus lifting is an essential procedure for ensuring implant success in the upper jaw, especially in cases of bone deficiency due to sinus expansion. By gently lifting the sinus membrane and regenerating bone tissue, it allows for safe, stable, and long-lasting implant placement — restoring both function and aesthetics. With modern surgical methods and biocompatible graft materials, sinus lifting offers predictable, durable, and natural results for patients seeking a permanent smile restoration.