- Types of Bone Grafts
- Procedure for Bone grafting
Clinical applications of Bone grafting
- Socket preservation
- Sinus Lift
- Autogenous Block Bone Augmentation
Bone Grafting: Bone grafting in the oral cavity today is a routine, predictable and painless procedure performed in a dental office by an Oral Maxillofacial surgeon in order to maximize the outcome of dental implant surgery.
It is recommended when jawbones are insufficient in either height or width to support dental implants.
Types of Bone Grafts
Autogenous Bone Grafts:
The grafts that are made from your own bone, anywhere in your body are known as autogenous bone grafts or autografts. Mostly it is taken from chin, jaw, lower leg bone, hip or the skull.
Allogenic Bone Graft:
The dead bone taken from a cadaver processed by freeze-dry method is called allogenic bone graft or allograft.it cannot produce new bone on its own whereas autogenous graft can.But it act as framework on which bone is formed from surrounding tissue to fill up the whole gap.
Xenogenic Bone Graft:
Non-living bone from another species (usually cow) is called xenogenic bone. This bone processed at very high temperatures in order to put a stop to free from immune rejection and contamination.
Bone Graft Substitutes
As bone substitutes, many synthetic materials are used and are proven safe, they are
Demineralised Bone Matrix (DBM)/Demineralised Freeze-Dried Bone Allograft(DFDBA):
The processed allograft bone, which contains collagen, proteins and growth factors,which are available in form of powder,putty,chipsand as gel injected through syringe.
Bone graft materials and growth factors together are called graft composites,which has both benefits. Someother combinations includes,collagen/ceramiccomposite,which is similar to natural bone composition.DBM along with bone marrow cells helps in new bone formation.
Bone Morphogenetic Protiens:
Proteins naturally produced in the body that helps and regulates bone formation and healing are called Bone morphogenic proteins.
The advantage of synthetic materials is they don’t require a secondary procedure of taking bone from another site,which reduces risk and pain.
Every bone grafting procedure has its own risks and benefits.
Dr Ranjit Kumar will determine which type of bone graft material is right for you.
Mostly bone grafting requires one or combination of these procedures.
Socket preservation or alveolar ridge preservation(ARP) is done to preserve the dental alveolus and to reduce drastic resorbtion.
In this procedure,bone graft is placed in the socket,where the tooth was removed.This graft is made up of synthetic materials, bone from another species(cow), or human bone. After the graft is placed in the socket,it is covered with a collagen membrane, and sutured
At Confydentz we use Platelet Rich Fibrin (PRF) which is derived from patients own blood for socket preservation. PRF has been proven to be the most effective natural biomaterial for socket preservation.
DO YOU NEED IT?
Socket preservation improves the appearance of other teeth and gums to get implant procedure done without complications.
What is a Sinus Lift?
The bone grafting procedure done when there is no sufficient bone height in the upper jaw, or sinuses that are too close to the jaw, to accommodate the length of implant.
Sinus lifts have become common during the last 15 years as more people get dental implants to replace missing teeth
What Does Sinus Lift procedure do?
In this procedure,bone grafting material is filled in the lower portion of maxillary sinus, to form a thick sinus floor and implant is placed in this region.
How It’s Done ?
Mucoperiosteal flap is raised, exposing the bone & a small, oval window is opened in the bone. The membrane lining the sinus on the other side of the window separates your sinus from your jaw. This membrane is gently pushed up and away from your jaw.
The space in the sinus was packed with granules of bone-graft material. Upto several millimeters height the bone is added above the jaw, although the amount of bone used varies in every individual.
After placing the bone material tissue is closed and sutured. After 4-9 months, implants are placed. In this mean time the bone material forms a mess around the bone. The time taken depends on the amount of bone grafted.
- Do not blow your nose or sneeze forcefully.
- Saline sprays are prescribed to prevent congestion and inflammation.
- Antibiotics & Pain killers are advised.
Recall visit after 7 to 10 days to evaluate the surgical site and remove stitches if they will not dissolve on their own.
You have to wait several months after the sinus lift procedure, so that the grafted material hardens and integrates with your jaw.
We at Confydentz use, platelet rich fibrin(PRF) derived from patients own blood which contain natural growth factors . It is most of the time mixed with graft. It stimulates bone formation without grafting. The U.S. Food and Drug Administration has approved its use during a sinus lift procedure.
Autogenous Block Bone graft
Sufficient bone volume is necessary for the success of implants. Exogenous sources are available for grafting, but their performance in large bony defects is very poor.
For augmentation of bone the most reliable option is Autogenous bone block transfer(ABBT).It is done from the mandibular symphysis and ramus of the mandible.