Sinus lift closed (internal)
Closed or internal sinus lift is performed in mild cases when the sinus does not need to be lifted very much and the bone tissue is at least 10mm. In this situation, the sinus lift procedure can be performed in the same session as the dental implant insertion procedure. For a closed sinus lift, a minimum of 1-2mm bone addition is needed.
When is internal sinus lift surgery recommended? Internal sinus lift is especially recommended when only a few teeth need to be replaced. It is performed in the area of the premolars and molars, at ridge level: a path is created to the maxillary sinus, then by carefully pushing the sinus membrane, the bone substitute is inserted to create a height and width appropriate for the support of the necessary dental implant. This procedure is performed when there is a relatively sufficient amount of alveolar bone and only 1-2 millimetres of bone addition is required.
What are the stages of internal sinus lifting?
- local anaesthesia
- incision of the mucosa and removal of the mucosa with exposure of the jaw bone
- perforation of the bone until the sinus membrane is reached
- detaching the sinus membrane with special instruments and introducing the mixture of bone and blood into the space between the sinus membrane and the jawbone, resulting in the lifting of the membrane (sinus lift).
Advantages of internal sinus lift?
It has been clinically proven that sinus lifts allow for the insertion of longer dental implants, which are therefore more durable and last longer. The procedure is extremely delicate, requiring a high degree of experience and dexterity on the part of the surgeon.
Disadvantages of internal sinus lift?
The disadvantage of this type of surgery is that it is a "blind" manoeuvre, with no visual control, the surgeon relying practically only on the sense of touch to elevate the sinus membrane.