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SURGICAL PROCEDURES

BONE GRAFT

Bone graft procedure

 

PURPOSE OF BONE GRAFT

The main purpose of bone grafting is to preserve or increase the amount of the bone that is present in the surgical site. Bone grafting is commonly completed after tooth extraction or during a sinus lift procedure. After the grafting material is placed it is resorbed by the body and replaced with our natural bone. This will either stabilize or slightly increase the level of bone. Another common use of bone grafting is to fill in any structural bone defects during implant placement surgery. This allows the surgeon to smooth out the bone circumventing the dental implant. A very common use of bone grafts is to repair any defects in the natural bone.

 

After a tooth is removed and the extraction site is allowed to heal on its own, the vertical height of bone will naturally decrease due to alveolar bone resorbtion. By placing a bone graft we are able to stabilize the alveolar ridge, the bone that holds the teeth in place, which means that after the tooth extraction site heals the bone height should be similar to pre-extraction levels.

 

Bone grafting during a sinus lift procedure will increase the amount of bone available for dental implant stabilization. Without the graft, part of the dental implant can sit in the nasal sinus cavity without any support. This could lead to potential failure of the dental implant in the future.

 

CLICK ON ANY IMAGE BELOW TO ENLARGE VIEW

The maxillary sinuses are located in the cheekbones, just below the eyes. As you can see in the picture, the tooth is suported for the natural bone.All our naturals teeth are held by their roots. When we lose a tooth, the extracted root creates an opening. Tooth loss below the sinus leads to bone loss and overtime the sinus will expand into the area previously occuped by the bone and teeth.The surrounding bone is not longer stimulated by tooth root and immediately start to collapse and shrink. In this graph, we can see the decrease of the maxillary sinus caused by extraction or tooth loss. The surgeon will correct the sinus to its original state for the correct placement of the dental implant.If there is too much bone loss, it would be impossible to place a dental implant for cosmetic and funtional reasons. If a DENTAL IMPLANT is placed into the inadequate bone, it will move, shift and fail because there is not enough stability to withstand forces of biting and chewing.This example shows how the implant is placed incorrectly, it is below the level of the remaining teeth, a situation that will bring negative consequences regarding the biting and chewing. A sinus lift procedure begins with a temporary opening made in one of two possible areas as shown in  this graphic.In this case, the implant has been placed at the level of the remaining teeth, but the root has been exposed, that the implant will not have adequate stability and therefore is highly probable that treatment failure. An instrument then modifies the sinus to previous position, providing clearance for the placement of substitute bone.A crown bridge won't be successful because the shrinking will make the tooth float in the space between the anchor teeth. Therefore we must take preventive measures to preserve the natural contours and maintain the surrounding bone. The required amount of bone is added in the maxillary sinus, to provide enough stability and thus proceed to the dental implant placement.The procedure of bone grafting begins with filling the opening left by the tooth root with a specialized bone substitute product, filling adequately the area. Over time, the implant and substitute bone will heal, creating a strong bone and stable foundation for your teeth.A coffering that is designed to approve healing is then shaped and applied over the site. Finally, the implant placement process in totally finished and the result is 100% successful. The lifting have solved this original issue.To conclude the procedure the area is stitched and the natural healing process begins.Finally, the implant placement process in totally finished and the result is 100% successful. The lifting have solved this original issue.Over time the bone substitute product will be absorbed and replaced with your body's own bone.Finally, the implant placement process in totally finished and the result is 100% successful. The lifting have solved this original issue.Once the site has completely matured the dental implant can be placed. The treatment maintains you natural bone and gum contours, so that your new dental implant will look and feel like a natural tooth.

 

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