Dental implants are considered one of the most prominent medical procedures that have revolutionized the world of dentistry, as they are performed with the aim of replacing missing teeth by placing artificial roots made of titanium or zirconium that are implanted in the jawbone to act as a solid base to support crowns, bridges, or prostheses placed on top of them.
In general, with the advancement of dental implant techniques, these procedures have become safe and effective, giving patients the opportunity to restore their smile in a natural and attractive way.
Benefits of dental implants
Aesthetic benefits:
- Improving overall appearance: implanted teeth provide a natural look similar to original teeth.
- Boosting self-confidence: allows patients to speak and smile freely without worrying about the appearance of their teeth.
Health benefits:
- Improving oral functions: implanted teeth enhance the efficiency of chewing and speaking.
- Protection from tooth decay and bone loss: implants prevent bone deterioration in the jaw and reduce the risk of gum disease.
The concept of sinus lift and its relation to dental implants (What is a sinus lift?)
In some cases, sinus lift surgery is a necessary procedure before dental implants to ensure the success of the dental implant process.
This procedure is performed when the amount of bone in the upper jaw is not sufficient to support dental implants, and the bone quantity becomes unsuitable because when the duration of missing teeth becomes long, the bone resorbs, which increases the size of the sinus cavity, and when the amount of bone decreases, there is not enough bone space to endure the implant, therefore we perform a sinus lift procedure.
A sinus lift is a surgical procedure used to increase the amount of bone in the upper jaw in the posterior area near the molars and premolars, where the sinus cavities are located, as the doctor lifts the sinus membrane through a procedure in which the space is filled with artificial or natural bone.
Steps of sinus lift
- Local anesthesia: the procedure begins with local anesthesia to reduce pain, and general anesthesia may be used if the patient suffers from severe anxiety.
- Precise surgical incision: the surgeon makes a small incision through the gum in the area where the implant will be placed, the gum tissue is folded to expose the bone located beneath the sinus.
- Preparation of the bone grafting area: a small hole is drilled in the bone using specialized surgical tools to reach the floor of the sinus.
- Lifting the sinus membrane: there is a thin membrane lining the sinus from the inside, the surgeon gently lifts it using very precise tools to avoid tearing.
- Adding the new bone: the resulting space under the lower membrane of the sinus is filled with artificial bone or bone taken from the patient’s own body or from donors (processed natural bone), one of the best types used in bone grafting is the bone taken from the same human body, followed by bone taken from donors and processed to become small particles known as small particle allograft.
- Closing the surgical incision: after adding the bone, the gum is returned to its normal position and fixed using dissolvable surgical sutures or those that need to be removed later.
Reasons that may require performing this procedure
Loss of upper posterior teeth: which leads to a deficiency in bone in the area due to bone resorption as there is no function that this bone performs such as supporting teeth, therefore it decreases in size.
Bone loss due to gum disease: in advanced cases of gum disease such as periodontitis, the bone recedes which reduces its size.
Wearing dentures for a long time: as dentures put pressure on the bone, which accelerates the process of its resorption.
Types of sinus lift
1- Open sinus lift (Open Sinus Lift):
The first to apply it was Dr. Caldwell-Luc and it was also named after him, and this method is used in cases where bone loss is large (less than 4-5 mm of remaining bone).
Advantages:
- When the remaining bone is less than 4 mm, it is the preferred method for bone grafting.
- It helps slightly in improving sinusitis problems for patients who suffer from it and take various treatments for nasal and ear inflammation because it helps more in draining sinus secretions through the nose.
- It has a high success rate.
Disadvantages:
It requires a long healing time (6-9 months).
2- Closed sinus lift (Closed Sinus Lift):
It is used when bone loss is slight (more than 5-7 mm of remaining bone).
Advantages:
- It is a less invasive and less painful procedure
- Shorter healing period (3-6 months).
- It has a high success rate.
Disadvantages:
It is used in cases where there is relatively sufficient bone quantity when the remaining bone is (6 mm).
When is each type used?
- Closed lift: in simple cases that require a slight increase in bone.
- Open lift: in cases that require a large increase in bone quantity.
When is a sinus lift needed in dental implants?
Lack of bone in the upper jaw:
When there is a deficiency in bone due to long-term tooth loss, a sinus lift becomes necessary to provide a solid base for dental implants.
Proximity to the sinuses:
If the sinuses are very close to the implant area, the procedure may require bone augmentation to ensure the success of the implant process.
How is a sinus lift performed
1- Preparation for surgery:
- Comprehensive medical evaluation: includes a precise examination of the mouth and teeth using 3D X-rays and clinical examination.
- Local anesthesia: to eliminate pain during surgery.
2- Surgery and procedures:
- Performing the surgical incision: to expose the bone in the jaw.
- Lifting the sinus membrane.
- Adding bone: to improve bone density and provide a strong base for implants.
- Closing the wound: using medical sutures.
Post-surgery care tips to ensure quick recovery
Avoid pressure on the nose: to prevent any complications.
Take prescribed medications: such as antibiotics and pain relievers.
Maintain oral hygiene: using antiseptic mouthwash and a soft toothbrush.
Visit the doctor regularly: to monitor the healing process and evaluate the success of the surgery.
Why choose Wonders dentistry clinic for dental implants and sinus lift?
At Wonders dentistry, we provide dental implant and sinus lift services at the highest level of efficiency and professionalism under the supervision of Dr. Ahmed Saeed, who has extensive experience in performing dental implants and sinus lift procedures using the latest technologies and the best medical materials.
- Comprehensive and accurate evaluation: using advanced devices.
- Personalized medical care: to ensure achieving the best results.
- Regular follow-up: to ensure the success of implants and oral health.
In the end, A sinus lift is a necessary procedure to ensure the success of dental implants in cases that suffer from a lack of bone in the upper jaw.
With proper medical evaluation, precise surgery, and continuous care, patients can enjoy a natural smile and improved oral functions that last a lifetime at Wonders dentistry under the supervision of Dr. Ahmed Saeed, specialist in dental implants, oral surgery, and prosthodontics.
FAQs
What is a sinus lift and why is it performed before dental implants?
A sinus lift (sinus augmentation) is a supplementary surgical procedure performed in the posterior maxilla to increase the amount of bone available to support dental implants. The maxillary sinus is an air-filled cavity located above the upper molars, and when teeth are lost for an extended period, alveolar bone atrophy occurs and the sinus expands downward, reducing bone height to less than 10 mm. Since a standard dental implant requires 10–12 mm of bone for stability, a sinus lift becomes necessary to rebuild this bone. The procedure involves elevating the Schneiderian membrane that lines the sinus, then filling the resulting space with bone graft material to form new bone that takes 4 to 9 months to mature before implant placement.
How does the surgeon choose between open and closed sinus lift techniques?
The choice of sinus lift technique depends on the residual bone height (RBH) as measured via cone beam computed tomography (CBCT):
Closed (Crestal) Sinus Lift: Used when residual bone height is more than 5–7 mm. It is performed through a small osteotomy in the bone crest using hydraulic elevators or piezoelectric surgery to lift the membrane from below. Advantages: less invasive, less pain, shorter healing time (3–6 months), and immediate implant placement is sometimes possible. However, it is limited to cases requiring only slight bone augmentation.
Open (Lateral Window) Sinus Lift: Used when residual bone height is less than 4–5 mm. It is performed through a lateral incision in the gum to create a bony window allowing direct visualization and easier elevation of the membrane. Advantages: provides greater bone volume, suitable for severe cases, and allows multiple implants to be placed simultaneously. However, it requires a longer healing period (6–9 months) and may cause more swelling.
Can dental implants be placed in the same session as a sinus lift?
Yes, in some cases immediate implant placement can be performed simultaneously with a sinus lift, but this depends on several critical factors. First, there must be sufficient native bone to provide primary stability for the implant, usually at least 5–6 mm. Second, the sinus membrane must be intact and not perforated during surgery. Third, the graft material quality must be high and from a reliable source. With closed sinus lifts, the chances of immediate placement are higher because the procedure is less invasive. With open sinus lifts, it is generally preferred to wait at least 6 months for new bone to form and transform from woven bone to lamellar bone capable of withstanding chewing forces.
What types of bone graft materials are used in sinus lift procedures?
Bone graft materials used in sinus lift procedures vary by source and composition:
- Autograft: Bone taken from the patient’s own body, typically from the ramus, iliac crest, or chin. Considered the gold standard because it contains osteogenic cells and natural growth factors, with success rates up to 95%. However, it requires a second surgical site.
- Allograft: Human bone from tissue banks, processed to remove immune cells. Widely used in forms such as freeze-dried bone allograft (FDBA) or demineralized freeze-dried bone allograft (DFDBA). Provides an osteoconductive scaffold and stimulates new bone growth.
- Xenograft: Bone from animal sources such as bovine bone mineral (Bio-Oss). Processed to remove organic proteins and used as a slowly resorbing structural scaffold replaced by natural bone.
- Alloplast: Synthetic materials such as beta-tricalcium phosphate (β-TCP) or bioactive glass. Used as an alternative when natural bone is unavailable, but less effective in stimulating bone growth.
In advanced clinics, a composite graft combining these materials is used to achieve optimal results.
Does sinus lift affect the sense of smell or cause serious complications?
A sinus lift is considered a safe procedure with success rates of 90–95% when performed by a qualified oral and maxillofacial surgeon. However, like any surgery, it may involve some complications:
- Schneiderian membrane perforation: The most common complication, occurring in 10–20% of cases, especially when the membrane is thin or fibrotic. Small tears can be repaired with a collagen membrane. Large tears may require postponing the procedure for 3 months.
- Infection: Rare but possible if sterility is not maintained. Treated with antibiotics.
- Bleeding: May occur from small vessels within the sinus, but usually stops spontaneously.
- Effect on sense of smell: Usually temporary due to swelling around the sinus, resolving within weeks. Permanent loss is extremely rare.
- Graft rejection: Very rare and may require reoperation.
To minimize these risks, choose a surgeon with extensive experience in sinus surgeries and consider piezoelectric surgery techniques that reduce membrane perforation risk.
