WHAT IS A SINUS LIFT?
A sinus lift, also known as a sinus augmentation, is surgery that adds bone to the upper jaw where the molars and premolars are situated. A sinus lift is required when there is not enough bone height in the upper jaw, or if the sinuses are too close to the jaw for dental implants to be placed. At Keene Dentistry & Implants we offer two types of sinus lifts; a Lateral Sinus Lift and a Vertical Sinus Lift. Our teams of dentists at our dental practice possess a high level of expertise in performing the various types of sinus lifts necessary for our patients.
WHAT IS A LATERAL SINUS LIFT?
A lateral sinus lift is one of the most widely used augmentation procedures since it enables dentists to make an implant in the dorsal parts of the maxilla, where the bone often has poor quality and is reduced by the extended maxillary sinus.
PERFORMING A LATERAL SINUS LIFT AT KEENE DENTISTRY & IMPLANTS
A lateral sinus lift involves an improved Caldwell-Luc operation to gain access to the sinus cavity. A bony window is created in the lateral maxillary wall to allow the Schneiderian membrane to be elevated. The bone used for a sinus lift as such may come from the patient’s own body (autogenous bone), a cadaver (allogenic bone), or a synthetic bone. Bone grafting material for a lateral sinus lift is a combination of both an autogenous bone and allograft. An absorbable collagen tissue is placed between the bone graft and the membrane as well as over the bony window.
This technique is usually the preferred method of sinus elevation in situations of poor bone quality and minimal residual bone height because it allows for direct imagining and accurate bone placement and volume at the position of the implant. Also, tearing of the membrane can be easily treated, minimizing impurity of the graft during healing.
WHAT IS A VERTICAL SINUS LIFT?
A vertical sinus lift is a procedure involving a sinus elevation and dental graft placement. This procedure involves elevating cores of the patients very own bone and reducing the amount of grafted bone, while elevating the maxillary sinus. This site development technique provides sufficient bone for future dental implants.
PERFORMING A VERTICAL SINUS LIFT AT KEENE DENTISTRY & IMPLANTS
Dentists at Keene Dentistry & Implants make extraction sites that are drilled with a calibrated trephine bur to an estimated distance of 1mm from the sinus membrane. The trephined interradicular bone and underlying sinus tissue are imploded into the sinus. The surgical crater and residual extraction socket are filled with deproteinized bovine bone mineral or freeze-dried bone allograft, steadied, and protected with an absorbable collagen tissue and fully covered with coronally positioned flaps.
Before undergoing the types of sinus lifts surgeries available at Keene Dentistry & Implants, we prioritize in informing our patients about the potential benefits and possible consequences of the procedures. Dental x-rays and CT scans are performed to determine the exact location, anatomy and health of the sinuses. The procedure is typically performed under local anesthesia alongside IV sedation but is ultimately dependent on patient condition at time of surgery.