The Gold Standard for Major Sinus Augmentation
The lateral window sinus lift is the technique of choice when the upper posterior jaw lacks the bone height needed for standard implant placement and the deficiency is too great for a crestal approach. When CBCT imaging shows less than 4-5mm of residual bone below the maxillary sinus floor, the lateral approach is necessary — it provides direct visualization of the sinus membrane, allows for substantial augmentation (up to 12-15mm of height gain), and accommodates large volumes of graft material with predictable outcomes.
The procedure begins with a mucoperiosteal flap improved on the lateral wall of the maxilla, above the premolar and molar roots. A window is outlined in the lateral wall using a piezoelectric tip or round diamond bur — instruments chosen specifically because they cut bone without damaging the underlying Schneiderian membrane. The bone window is either hinged inward (trap-door technique) or removed entirely. The membrane is then improved with specialized curettes, peeling it away from the sinus floor and walls in all directions. Dr. Walied Eldomiaty verifies membrane integrity at every step — a perforation discovered early is repaired with a collagen membrane before grafting proceeds.
Once the membrane is improved to the desired height, the created space is packed with bone graft material — typically a mixture of allograft and xenograft combined with PRF. The PRF serves dual purposes: it accelerates angiogenesis within the graft and provides a sticky matrix that helps particulate graft material stay in place. A collagen membrane covers the lateral window, the flap is repositioned and sutured, and the site heals for 6-9 months before implant placement. In some cases where at least 4-5mm of native bone exists, implants are placed simultaneously through the bone floor into the graft, combining the two procedures and reducing total treatment time.
Serving Beaverton, Aloha, Hillsboro & Washington County
Aloha Dental Specialty Center is located at 18455 SW Alexander St, Suite B, in Beaverton, Or Oregon. We serve patients from across the Tualatin Valley and greater Portland metro, including Aloha, Hillsboro, Tigard, Lake Oswego, and Tualatin. Our Beaverton office is a 5-minute drive from Aloha, 10 minutes from Hillsboro, and 15 minutes from Tigard via SW 185th Avenue.
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Intel Campuses (Ronler Acres & Jones Farm)
10 to 15 minutes via NW 185th Ave. We accommodate the schedules of tech professionals who need efficient, high-quality specialty care.
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Nike World Headquarters
About 8 minutes via SW Baseline Rd. We frequently see patients from the Nike campus for surgical and implant procedures with sedation options.
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Streets of Tanasbourne & Orenco Station
Easily accessible via US-26 and NW 185th. Local general dentists in these communities regularly refer patients to us for specialty procedures.
Why Local Dentists Refer to Us
We work as a trusted partner to general dentists throughout the Tualatin Valley. When cases require CBCT-guided planning, IV sedation, bone grafting, or other advanced procedures, local providers refer to Dr. Ostovar for his experience with implant procedures and predictable results.
We handle the procedures within our scope and coordinate closely with your general dentist for smooth continuity of care from start to finish.
Office hours: Mon–Fri 8 AM–5 PM (Thu & Fri until 6 PM), Sat 8 AM–2 PM
Understanding Your Investment
At Aloha Dental Specialty Center, we provide transparent pricing before any treatment begins. The cost of your procedure depends on clinical complexity, materials used, and sedation requirements. We walk you through every line item during your consultation so there are no surprises.
What Affects Cost:
- Clinical Complexity: Bone loss, sinus proximity, nerve involvement, or the need for grafting affects treatment planning and surgical time.
- Materials: We use research-backed implant systems, purified bone graft matrices, and high-strength ceramics from established manufacturers.
- Sedation: Options range from local anesthesia to IV sedation, each with different associated costs. We discuss the best option for your comfort and procedure.
Insurance & Financing
We accept most major dental insurance plans and file claims on your behalf. Our team verifies your benefits before treatment and submits pre-treatment estimates with clinical documentation to maximize coverage.
For out-of-pocket costs, we partner with CareCredit and Cherry for flexible payment plans. We also offer our ADSC Dental Savings Plan for patients without insurance.
Recovery & Healing Timeline
Understanding the healing process helps you plan ahead and follow post-operative instructions for the best possible outcome.
First 48 Hours
Mild swelling and tenderness are normal. Apply ice packs in 20-minute intervals and take prescribed or over-the-counter anti-inflammatory medication. Eat soft foods and avoid the surgical site when chewing.
Days 3 to 7
Swelling peaks around day three and then improves. The tissue begins closing over the surgical site. Continue with soft foods and use any prescribed antimicrobial rinse. Most patients return to normal activities during this phase.
Long-Term Healing
Surface tissue heals within two to three weeks. Bone integration and deep healing continue for three to six months. Avoid smoking, follow up as scheduled, and maintain good oral hygiene throughout recovery.
Questions during recovery? Call us at (503) 822-0096. We are available for post-operative concerns.
Graft Integration in the Sinus Environment
The sinus provides a unique environment for bone grafting. The improved Schneiderian membrane acts as a biological tent, contributing osteogenic cells from its deep surface while containing the graft in a defined space. The native bone floor provides osteoblasts from below, and the lateral walls contribute from the sides — creating a "three-wall" bone formation pattern. Research using histomorphometric analysis of sinus graft biopsies at 6-9 months shows approximately 25-40% new vital bone, 25-35% residual graft particles, and 25-40% marrow space — indicating active bone formation and integration. The xenograft component resorbs very slowly (over years), maintaining volume while the allograft and native bone formation provide the living tissue.
Why Choose ADSC?
The lateral window sinus lift is a procedure where membrane management makes or breaks the outcome. The Schneiderian membrane is thin (0.3-0.8mm), adherent to the bone, and has a reported perforation rate of 7-35% depending on surgeon experience. Septa (bony ridges within the sinus) can tear the membrane during elevation if not identified on CBCT and navigated carefully. The use of piezoelectric instruments — which Dr. Walied Eldomiaty employs specifically for sinus work — reduces perforation risk by cutting bone ultrasonically without engaging soft tissue. Combined with a high-volume sinus lift practice and meticulous membrane handling technique, this keeps perforation rates well below published averages.
Your Sinus Lift Lateral Window Treatment Steps
- Consultation & Exam: Comprehensive sinus lift lateral window evaluation with CBCT 3D imaging at our Beaverton office.
- Treatment Plan: Our experienced dental team discusses your sinus lift lateral window options, timeline, and costs. We use advanced 3D imaging and evidence-based protocols across general dentistry, endodontics, and pediatric care.
- Treatment: Procedure performed with comfort options including sedation if needed.
- Follow-Up: Post-treatment monitoring and care coordination for best healing.
Schedule Your Appointment Today
Book a consultation with our team at Aloha Dental Specialty Center in Beaverton, OR. Call (503) 822-0096 Office hours: Monday through Friday 8 AM to 5 PM (until 6 PM Thursday and Friday), Saturday 8 AM to 2 PM. or request an appointment online.
Related Services at Aloha Dental Specialty Center:
Dental Implants · Oral Surgery · Root Canal · Invisalign · Periodontics · Pediatric · TMJ Treatment · Sedation · Cosmetic · Emergency · Sleep Apnea
A Note from Your Dental Team
In my experience, the patients who get the best results from sinus lift lateral window are those who come in with realistic expectations and follow their post-treatment instructions carefully. I’d rather spend extra time explaining what to expect than have a patient be surprised later.
“Every patient I see has a different story, a different set of concerns, and a different definition of what ‘success’ looks like. That’s why I don’t believe in one-size-fits-all treatment plans. When you come in for a consultation, I’ll listen first, examine second, and recommend third.
I also won’t recommend a procedure you don’t need. If your tooth can be saved with a filling instead of a crown, I’ll tell you that. If watchful waiting is appropriate, I’ll explain why. My job isn’t to sell treatment — it’s to give you my honest clinical judgment so you can make an informed decision.
If you have questions about whether this treatment is right for you, or if you’ve been told you need this procedure by another dentist and want a second opinion, call us at (503) 822-0096. We’re happy to take the time to explain everything — no rush, no pressure.”
— Aloha Dental Specialty Center, Beaverton, OR
I know many patients feel anxious about dental procedures — you’re not alone in that. What I hear most often after treatment is: “That was so much easier than I expected.” We’re here to make this as comfortable as possible for you.
Are You a Candidate for Sinus Lift Lateral Window?
Most patients in good general health are candidates for sinus lift lateral window. However, certain factors may affect your eligibility or require modifications to the treatment plan:
- Medical conditions: Uncontrolled diabetes, autoimmune disorders, or blood-thinning medications may require coordination with your physician before treatment.
- Bone quality: For sinus lift lateral window involving the jawbone, adequate bone density is essential. A CBCT 3D scan during your consultation determines this precisely.
- Smoking: Tobacco use significantly impairs healing. We strongly recommend quitting 2-4 weeks before and after any surgical procedure.
- Age: There is generally no upper age limit. What matters is your overall health, not your age. We have successfully treated patients in their 80s and 90s.
The only way to know for certain is a consultation with our team with a board-certified endodontist. Call (503) 822-0096 to schedule your evaluation — we’ll tell you honestly whether this is the right treatment for your situation.
Typical Healing Timeline:
Days 1-3: Initial healing, mild swelling managed with ice and medication. Days 4-7: Swelling subsides, gradual return to normal diet. Weeks 2-4: Soft tissue heals completely. Months 2-6: Bone remodeling and full integration (for surgical procedures). Individual recovery varies — we provide detailed post-op instructions specific to your procedure.
For additional clinical information, visit the American Dental Association (ADA).
Reviewed by Dr. Walied Eldomiaty, DDS, Periodontist — March 2026. Clinical information on this page reflects current evidence-based dental practices.
Related Dental Services
Frequently Asked Questions
Most patients report less pain than expected. The procedure is done under IV sedation — you have no memory of the surgery. Post-operative discomfort is managed with ibuprofen and prescribed medication for 3-5 days. Swelling and minor bruising peak at day 2-3 and resolve over the following week. Avoid nose blowing for two weeks.
A lateral approach is needed when the residual bone below the sinus floor is less than 4-5mm — insufficient for a crestal approach. It is also preferred when large amounts of augmentation (greater than 5mm of height gain) are needed, when multiple implants are planned in the posterior maxilla, or when the sinus anatomy (septa, thick membrane) makes a crestal approach risky.
A unilateral (one side) lateral sinus lift takes 60-90 minutes. Bilateral cases (both sides) take approximately 2-2.5 hours. If implants are being placed simultaneously, additional time is needed. IV sedation is standard for these procedures.
Patients consistently report less pain than expected. The maxillary bone has fewer nerve endings than the mandible, so post-operative pain is typically moderate — more pressure and stuffiness than sharp pain. Ibuprofen is usually sufficient by day 2-3. The most common complaint is nasal congestion for the first week.
Mild to moderate swelling for 3-5 days. Nasal congestion and a feeling of fullness for 1-2 weeks. No nose blowing for 2-3 weeks. No flying for 1-2 weeks. Soft diet for one week. Return to normal activity in 3-5 days for most patients. The graft matures over 6-9 months before implant placement.
Small perforations (under 5mm) are repaired with a collagen membrane patch and the procedure continues. Medium perforations (5-10mm) require more extensive repair. Large perforations or tears that cannot be repaired may require aborting the graft and allowing the membrane to heal for 3-6 months before reattempting.
We typically use a combination of allograft (human bone) and xenograft (bovine bone), mixed with PRF. The allograft provides osteoinductive growth factors. The xenograft is slow-resorbing, maintaining volume long-term. PRF accelerates healing and vascularization. The specific ratio is adjusted based on the augmentation volume needed.
Yes, if at least 4-5mm of native bone exists below the sinus floor to provide initial implant stability. The implant is placed through the bone floor and into the graft, integrating as the graft matures. This combines two procedures and reduces total treatment time. If less than 4mm of bone exists, a staged approach (graft first, implants later) is recommended.
Sinus septa are bony ridges inside the maxillary sinus that divide it into compartments. They are present in approximately 30-35% of patients. During membrane elevation, septa can catch and tear the membrane. CBCT identifies septa before surgery, allowing Dr. Walied Eldomiaty to plan the window position and membrane elevation technique to navigate around them safely.
No. The maxillary sinus is much larger than the space occupied by the graft. You may experience temporary congestion for 1-2 weeks due to mild sinus inflammation from the surgery, but this resolves as healing progresses. Long-term sinus function is unaffected.
A CBCT scan taken at 6-9 months after the procedure shows the augmented bone height, volume, and density. If the bone meets the requirements for your planned implant (typically 8-10mm of height), the sinus lift was successful. Success rates for lateral sinus lifts exceed 95%.
The primary risk is sinus membrane perforation (10-15% of cases), which is typically repaired during surgery without affecting outcomes. Other rare risks include infection, graft failure, and sinusitis. At ADSC, our surgeons use piezoelectric instruments and 3D imaging to minimize perforation risk and ensure precise membrane elevation.
Do not blow your nose for 2-3 weeks. Sneeze with your mouth open. No straw use. No flying for 1-2 weeks. No heavy lifting or straining for one week. Do not smoke. Take decongestant nasal spray as prescribed. These precautions protect the membrane and graft during early healing.
A lateral window sinus lift ranges from ,500 to ,500 per side depending on the extent of bone augmentation needed. This does not include the implant placement, which is a separate procedure 6-9 months later. Many PPO dental insurance plans cover a portion of sinus lift surgery. CareCredit 0% financing is available. Treatment costs vary by complexity. Contact us at (503) 822-0096 for a personalized estimate with insurance benefits calculated.
Prior sinus surgery, chronic sinusitis, or nasal polyps do not necessarily prevent a sinus lift, but they require careful evaluation. We review your sinus anatomy on CBCT and may recommend coordination with your ENT physician before proceeding. Active sinus infection must be resolved before surgery.