Sinus lifting

This technique is a delicate manoeuvre that involves the elevation of the sinus membrane off the maxillary sinus floor to augment the bone volume where there is not enough space for dental implants. The sinus lifting technique consists in placing a bone graft in the sinus without modifying the nasal cavity.

CT scan imaging provide the information we need about the sinuses, the status of the membrane, the thickness of the bone crest, the morphology of the sinus floor, and the thickness of the vestibular and palatine walls of the sinus. This imagery allows us to adapt our surgical techniques to the anatomical specificity of the area (e.g., blood vessels, nerves). The sinus membrane lines the sinus walls and is extremely thin.

The aim of the intervention is to position the bone-addition materials between the alveolar bone and the sinus membrane, without damaging the membrane.

The piezosurgery techniques used do not affect the soft tissue and leaves the membrane perfectly intact. Moreover, the specialised instruments used to lift it determine an over 99% success rate of the sinus lifting.

EXTERNAL SINUS LIFTING

By means of piezosurgery (PIEZOTOME SATELEC), the clinician performs a window in the sinus vestibular wall to reach the sinus membrane. This is separated from the interior bone cavity by means of fine ends attached to the piezosurgery equipment. Tension in the membrane is eliminated and it can be easily lifted by hand. After removing the tension in the membrane and detaching it from the bone, it can be noticed that it moves along with breathing.

The bone graft is generally obtained by mixing granular biomaterials (artificial bone) with host boneThis new bone material is grafted into the space between the sinus membrane and the sinus floor. Then, a collagen (resorbable biomaterial) membrane is applied to seal the space, preventing thus proliferation of soft tissue. The membranes guide the healing toward the intended purpose. Suture will close the wound and protect the graft from external factors.

Guidelines and treatment after sinus lifting surgery

When the intervention is completed, the patient is prescribed treatment with anti-inflammatory, antibiotic medication, painkillers, cold compress and to avoid effort. If such instructions are observed, healing will be fast.

Communication with the medical team is required throughout recovery. You will need periodical recall.

In general, complete healing followed by thickening the sinus floor to obtain new bone takes between 8 and 12 months. This period is necessary for the bone graft to stabilise and complete mineralisation of the newly formed bone to take place.

Advantages of sinus lifting technique

  • Precision owning to the direct visual access;
  • According to all cases, it is not limited by the size of the initial bone;
  • Predictability.

INTERNAL SINUS LIFTING

Access inside the sinus is performed through the very preparation necessary to the implant mounting.

It is a less invasion method. At least 6 mm (6) of bone are necessary.