Glendale, Arizona

Dental Sinus Lift in Glendale, AZ

A sinus lift creates the bone height needed to place dental implants in the upper back jaw -- the region most commonly affected by bone loss after molar loss. Dr. Dawson performs this procedure at SmileScience Dental Spa using a technique matched precisely to the amount of bone available at your site.

Written by Richard Dawson, DMD ICOI Fellow Reviewed by John Turke, DMD DMD Updated April 2026
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What Is a Sinus Lift?

A sinus lift -- formally called a maxillary sinus floor augmentation -- is a bone grafting procedure performed specifically in the upper jaw behind the canine teeth. The maxillary sinuses are air-filled cavities that sit just above the roots of the upper molars and premolars. When these teeth are lost, two things happen: the bone ridge beneath the sinus thins from resorption, and the sinus cavity itself can expand downward through a process called sinus pneumatization.

The result is a region of the jaw with very little vertical bone between the ridge crest and the sinus floor -- sometimes less than 4 to 5 mm. That is not enough to anchor an implant safely. A sinus lift corrects this by gently separating the sinus membrane from the bone beneath it and filling the resulting space with bone graft material. Over several months, the graft integrates with existing bone and builds the vertical height needed for a stable implant.

Sinus augmentation is one of the most studied and predictable pre-implant procedures in dentistry. Research consistently demonstrates implant survival rates above 90% in grafted sinus sites at five years -- matching outcomes in native bone when the procedure is performed correctly.

Dentist explaining dental model to patient at SmileScience

The Sinus Membrane and Why It Matters

Understanding the anatomy helps explain why this procedure works -- and why surgical precision is essential.

The Schneiderian Membrane

The sinus cavity is lined by a thin, delicate tissue that must be elevated without tearing. A perforation is the most common complication and is managed immediately -- but avoiding it requires precise technique and thorough pre-surgical imaging.

3D Planning Is Non-Negotiable

A cone-beam CT scan maps the sinus floor location, membrane thickness, and any anatomical variations like sinus septa. Dr. Dawson reviews this anatomy before every procedure. Operating without 3D imaging significantly raises perforation risk.

Graft Material Becomes Real Bone

The space under the elevated membrane is filled with xenograft and allograft, often enhanced with PRF from the patient's own blood. Over 4 to 9 months the body replaces this scaffold with living bone. The sinus itself is not damaged.

Dentist reviewing 3D scan results with patient at SmileScience

Who Needs a Sinus Lift?

A sinus lift is indicated when bone height in the upper posterior jaw is less than the minimum needed to safely anchor a dental implant -- typically 8 to 10 mm. A cone-beam CT scan is the only accurate way to determine this.

Missing Upper Molars or Premolars

Teeth in the upper back sit closest to the sinus floor. Their loss is the most common reason sinus augmentation becomes necessary. Even a single missing upper molar, if gone for more than a year, may require a sinus lift before implant placement.

Long-Term Denture Wear

Extended wear of upper dentures without implant support accelerates bone resorption in the posterior upper jaw, often leaving less than 5 mm of bone between the ridge and the sinus floor -- far below the threshold for safe implant placement.

Naturally Low Sinus Floor

Some patients have naturally large sinuses or anatomically low sinus floors even without a history of significant tooth loss. This is common and does not indicate any disease -- it simply means augmentation is needed to create adequate implant depth.

Periodontal Bone Loss

Advanced gum disease that eroded supporting bone in the upper posterior region can reduce available implant height significantly. Once the gum disease is controlled and the site has healed, sinus augmentation can restore the bone needed for implant-supported restoration.

Two Sinus Lift Approaches

The technique used depends on a single critical measurement: how much bone remains between the ridge crest and the sinus floor at the implant site. Dr. Dawson selects the approach that maximizes success while minimizing invasiveness.

Transcrestal (Crestal / Direct) Approach

Used when at least 5 to 6 mm of existing bone height is present at the site. The sinus floor is gently elevated through the same pilot channel drilled for the implant. Graft material is packed beneath the membrane and the implant may be placed in the same appointment -- no separate lateral incision required.

  • Minimally invasive -- no separate window required
  • Often combined with implant placement in one appointment
  • Shorter recovery period than lateral approach
  • Lower post-operative swelling

Required bone height: 5 mm or more

Lateral Window Approach

Used when less than 5 mm of bone is present -- the scenario where the sinus occupies most of the available space. A small oval window is carefully created in the thin lateral wall of the sinus. The membrane is elevated through this opening to create a larger working space, allowing a greater volume of bone graft material to be placed. Implants are placed after graft integration.

  • Handles severely deficient bone (under 5 mm or even under 2 mm)
  • Allows placement of larger graft volumes
  • Predictable long-term implant stability once integrated
  • Gold standard for upper jaw implants in severely resorbed ridges

Required bone height: Less than 5 mm -- staged implant placement after healing

What to Expect During a Sinus Lift

Lateral window sinus lifts take approximately 90 minutes per side. Transcrestal procedures add only 15 to 20 minutes to a standard implant appointment.

  1. CBCT Review and Surgical Planning

    Dr. Dawson reviews your 3D cone-beam CT scan to measure bone height precisely, assess the sinus membrane thickness, identify any sinus septa (internal partitions), and determine which approach is appropriate. Any active sinus infection must be resolved before proceeding.

  2. Anesthesia and Sedation

    The surgical site is thoroughly numbed with local anesthesia. For patients who prefer to be less aware during the procedure, oral conscious sedation or IV sedation administered by a board-certified dental anesthesiologist is available. Most patients feel only gentle pressure during the procedure itself.

  3. Accessing the Sinus (Lateral Approach)

    For lateral window procedures, a small incision is made in the gum tissue over the upper back jaw. The tissue is gently reflected to expose the outer wall of the sinus. A small oval window is outlined in the thin lateral bone using a surgical handpiece or piezoelectric device, then carefully removed. The sinus membrane is visible beneath.

  4. Membrane Elevation and Graft Placement

    The Schneiderian membrane is gently and carefully elevated from the sinus floor using curved instruments. Once adequate space is created, bone graft material -- typically a combination of xenograft and allograft, often mixed with or layered over PRF -- is packed into the space beneath the membrane. The window is covered with a membrane barrier and the tissue is sutured closed.

  5. Recovery and Integration

    Post-operative instructions emphasize no nose blowing and avoiding activities that involve pressure changes (flying, diving, vigorous exercise) for the first two weeks. Nasal stuffiness on the treated side is normal and resolves within a few days. Integration is confirmed by CBCT scan before implant surgery is scheduled.

Simultaneous vs. Staged Implant Placement

One of the most common questions patients ask is whether the implant can go in at the same time as the sinus graft.

Simultaneous Placement

When 5 mm or more of native bone is available, the implant can often be placed at the same appointment as the sinus graft -- particularly with the transcrestal approach. The existing bone provides enough mechanical stability (primary stability) for the implant while the graft integrates around it. This reduces total treatment time by 3 to 6 months.

Best for: Transcrestal approach, 5+ mm existing bone, adequate implant stability torque achievable

Staged Placement

When bone height is under 5 mm, the graft must integrate before an implant can be placed. Attempting simultaneous placement without adequate primary stability increases the risk of implant failure. Staged placement is the more conservative and more predictable choice in these cases, and the additional wait time is well worthwhile for long-term outcomes.

Best for: Lateral window approach, under 5 mm existing bone, large graft volume required

Dr. Dawson reviews this decision case by case using your CBCT measurements and intraoperative stability readings. When primary stability cannot be confirmed, staged placement is always selected to protect your investment.

Recovery and Healing Timeline

Days 1 to 3

Peak swelling on the cheek and nasal stuffiness on the treated side. Rest, soft diet, no nose blowing. Cold compresses to the cheek reduce swelling. Prescribed antibiotics and anti-inflammatories as directed.

Weeks 1 to 3

Nasal congestion resolves. Swelling diminishes significantly. Sutures dissolve or removed at follow-up visit. Soft diet continues. No flying, diving, or strenuous activity for at least two full weeks.

Months 2 to 4

Full normal activity resumes. Graft material is actively integrating. No external signs of the surgery remain. Smaller transcrestal cases may be ready for implant evaluation toward the end of this window.

Months 4 to 9

Lateral window cases with larger graft volumes complete integration. A follow-up CBCT scan confirms bone density and height. Implant surgery is scheduled once integration is confirmed.

Success Rates and What the Research Says

The sinus lift is one of the best-studied bone grafting procedures in implant dentistry. Multiple systematic reviews and long-term follow-up studies confirm that implants placed in grafted sinus sites perform comparably to implants placed in native bone when patient selection and surgical technique are appropriate.

90%+

Implant survival rate at 5 years in grafted sinus sites across multiple systematic reviews

<5%

Membrane perforation rate in experienced hands with proper pre-surgical 3D imaging and technique

30+ yrs

Clinical history of the lateral window sinus lift as a predictable pre-implant surgical technique

The most important patient-controlled factor is following post-operative instructions -- specifically avoiding nose blowing and pressure changes during the critical early healing period, when the membrane and graft are most vulnerable.

Cost of a Sinus Lift in Glendale, AZ

Sinus lift costs depend on whether one or both sides are treated, which approach is used, the volume of graft material required, and whether the implant is placed simultaneously.

Transcrestal Sinus Lift

Typically $700 to $1,500 per side. Often performed simultaneously with implant placement, reducing the number of separate appointments and total treatment cost.

Lateral Window Sinus Lift

Typically $1,500 to $3,000 per side. A separate visit from implant placement. More complex cases involving bilateral lifts or significant graft volume fall toward the higher end of the range.

Many dental plans include partial coverage for bone grafting procedures. FSA and HSA accounts may be used for the full cost. Financing options including CareCredit, Cherry, Sunbit, and Proceed Finance are available, with monthly payment options. Ask our team at your free consultation -- we will verify your benefits and present all options clearly.

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Frequently Asked Questions

No. Sinus function is not altered by the procedure. The Schneiderian membrane that is elevated is thin and resilient -- it repairs itself within days. The grafted bone over time simply raises the floor of the sinus, which is a structural change without any functional consequence. Patients who have chronic sinus conditions, frequent sinus infections, or who have had sinus surgery should discuss this with both Dr. Dawson and their ENT physician before proceeding, as active sinusitis is a contraindication until fully resolved.

The procedure is performed under local anesthesia, so you will feel pressure but not pain during surgery. Post-operative discomfort is moderate and typically well controlled with anti-inflammatory medications. Swelling on the cheek and nasal stuffiness on the treated side are common for the first few days. Most patients are surprised by how manageable the recovery is. Sedation is available for patients who prefer to be less aware during the procedure.

The sinus lift is one of the most studied procedures in implant dentistry with a strong evidence base. Studies consistently report implant survival rates above 90% in grafted sinus sites at five years -- comparable to implants placed in native bone. Success is most strongly associated with surgical technique, thorough pre-surgical 3D imaging, and patient compliance with post-operative instructions (particularly avoiding nose blowing in the first two weeks).

Yes, bilateral sinus lifts can be performed in a single appointment in appropriate patients. The recovery is more involved than a unilateral lift because both sides of the upper jaw experience swelling simultaneously. Most patients who need bilateral lifts prefer the efficiency of a single surgery rather than two separate procedures with two recovery periods. Dr. Dawson will discuss the tradeoffs at your consultation.

In most cases, yes. Seasonal allergies are not a contraindication to sinus augmentation. However, scheduling during a low-symptom period is preferred to reduce the risk of post-operative sinus congestion and nose-blowing episodes during healing. Active sinus infection at the time of surgery is the key contraindication -- not a general history of allergies. Discuss your allergy history and current symptom control with Dr. Dawson at your consultation.

Membrane perforation is the most common intraoperative complication of a lateral window sinus lift, occurring in roughly 5 to 20% of cases even in experienced hands. When a small perforation occurs, it is repaired immediately using a collagen membrane patch or by folding the sinus membrane over itself. If a large perforation is encountered that cannot be reliably repaired, the procedure may be stopped and rescheduled after the membrane heals. This is uncommon and far better managed by stopping than by proceeding through an unrepaired defect.

For lateral window sinus lifts with staged implant placement, the full timeline from graft to final crown is typically 12 to 18 months: 4 to 9 months for graft integration, followed by implant placement, followed by 3 to 6 months for osseointegration, followed by the crown restoration. Transcrestal lifts with simultaneous implant placement can compress this to 6 to 9 months total. Dr. Dawson maps out your specific timeline at the consultation so you know exactly what to expect from day one.

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Find Out if a Sinus Lift Is Right for You

Schedule a free cone-beam CT evaluation at SmileScience Dental Spa in Glendale, AZ. Dr. Dawson will measure your exact bone height, map your sinus anatomy, explain which approach applies to your case, and outline the complete timeline from sinus graft to final implant crown.