With this kind of surgery, we plan to increase the quantity of bone in a
given area of the mouth, with the aim of obtaining enough to perform
implantology where it was impossible. The surgery techniques differ from maxilla
a) Bone fillers
The substances being employed to form new bone are of different kinds and
vary from liophilized bone of animal origin, to synthetic products based on
Calcium. It's not easy to exactly decide which of these guarantees a better
attachment, however more recent research seems to indicate that deproteinated
bone of bovine origin even performs better than the patient's own bone.
b) Minor and Major Sinus lift
It's applied to the maxilla, particularly to the posterior sectors (molars).
It practically consists in compensating for bone scarcity by filling a natural
cavity which is found above the teeth's roots, more or less under the cheekbone,
called maxillary sinus: it's a sort of lateral nose cavity and is one of the so
called "paranasal sinuses".
The minor sinus lift consists in pushing regenerative material into the
sinus, through an extraction cavity or an implant drilling: as a matter of
facts, this technique is applied within the same surgical act in which the
implant is placed and may offer a height gain up to 4 mm.
The major sinus lift is a more delicate surgery and consists in the opening
of a lateral door, giving access to the sinus and being cut on the lateral
external maxillary wall, facing the inner cheek. This technique allows to obtain
much bigger bone augmentations, and also to practically completely fill the
sinus. According to the technique used, implants can be placed in the same
c) Crestal bone augmentation
It can be applied both to the maxilla and the mandibula, however its main use
is in the lower jaw, where there are no cavities that can be filled. In this
case the substance is put over the bare mandibular bone. A very frequent and
safe surgery in this case is the drawing of natural bone from the patient's
iliac crest, in general anaesthesia and the immediate placing ton the receiving
site. Of course, this is a too complex surgery to be performed in a normal
dental office, and requires the competence of a good maxillo facial department
in a hospital.