Guided bone regeneration

Following tooth extraction, the process of bone resorption starts. During the first year, some 25% of the initial volume of the bone is lost where that tooth was lost, then the process continues, but at a slower rate. if we wish to insert a dental implant in that region, bone artificial addition will become mandatory as the stability of a dental implant requires certain a height and thickness of the bone where the implant will be placed.

Addition and implant placement can be performed in the same session provided the circumstances allow for such a procedure. It can be made to remedy some small defects on condition that there is no local infection. When performed in stages, the artificial bone addition is performed first; integration generally takes several months, and then the implant placement can be performed.

Bone augmentation is a complex procedure yielding good predictable results. As with any other surgical dental intervention, local anaesthetic is used. After surgery, patients should observe the treatment which includes antibiotics, anti-inflammatory, and painkillers, and for fast healing of the gum, disinfectants and cicatrising medication.

For bone augmentation, a bone graft is needed. The patient’s own bone (autogenous) and/or artificial bone are used.

Artificial bone grafts used are of bovine origin, treated, in order to avoid being rejected by the organism due to release of any organic substances. They only remain an inorganic matrix of mineral salts specific to the bone. They lack own cells. Therefore, contamination or rejection is impossible. The graft is an excellent basis, the matrix of regeneration that the body uses to create new bone in an area where it was missing. The patient’s own bone cells start to populate the artificial bone graft transforming it into new resistant bone. The artificial bone is colonised at an approximate 1 mm per month rate. The newly formed bone requires a further two months for complete mineralisation.

In Mariodent practice we only use the “premium” category augmentation materials: