Upper jaw bone regeneration
Frequently, particularly in cases where teeth have been missing for a long time, the jaw bone is too thin in the side tooth area of the upper jaw. The sinus lift is a type of operation within the field of jaw surgery in which the bony base of the maxillary sinus is strengthened.
The sinus floor is a thin bony plate which separates the maxillary sinus from the oral cavity. The side teeth are located in this bone. When you lose these molars, the sinus floor degrades until it is so thin that there is no longer enough space for the artificial tooth roots, the implants.
Implants can then only be used when adequate bone volume has been created. To do this, the implant surgeon performs a “sinus lift” also know as a sinus floor elevation. Here, the maxillary sinus is “lifted” using a blend of natural bone and bone-replacement material.
This means the open sinus lift creates enough room to allow the cylindrical implants to be inserted. Without this procedure, the implant would protrude into the maxillary sinus. Volume tomography forms part of the initial examination process at the Dentaprime Dental Clinic. This imaging technique facilitates highly-precise planning of the implant placement. It is possible to determine precisely whether the sinus floor is adequate for an implant, or if it need to be lifted. The length, thickness and angle of the dental implants can be precisely defined. After the sinus lift, another volume tomography image is taken as a check. After a healing phase of around six months, a digital radiography process is carried out in the region and then the implant procedure based on computer-assisted planning. This ensures that the sinus lift and implant procedures can be carried out without any additional risk.
When lifting the sinus floor we use Bio Oss bone replacement material. This material has been used successfully in practice for more than 20 years. We have had very good experiences with it at the Dentaprime Dental Clinic. The structure of the pores is similar to that of human bone. This diagram shows the method:
Left: Bio Oss-Matrix
Centre: Osteoblasts and blood vessels settle in the matrix
Right: Integration with newly-formed bone (6-9 months)
The “window” opened in the bone is closed with a membrane, so that the bone can regenerate undisturbed. This membrane is absorbable, so it is broken down completely by the body.