When a tooth or teeth are missing, an implant provides a replacement solution which consists of two stages.
A small titanium post is surgically inserted in the jawbone. This post will become like the root portion of a tooth. Normal time for implant to integrate with bone (healing time) is 4-6 month. However in some cases due to poor bone quality and quantity bone grafting(read more) is required and as a result healing time is 6-12 month.
Restorative ( prosthetic) stage:
Once the implant is set, a dental crown will be attached so it has the look and feel of a natural tooth. An implant can serve as an anchor for single crowns, bridges or dentures.
An Implant Supported Overdenture
Minimum required implants:
lower jaw 2 implants, upper jaw 4 implants. Healing time 4-6 month. Is a contemporary restoration that has revolutionized the way surgeons and dentists think of replacing a full set of teeth. Standard dentures are unsecured prostheses with inherent limitations. Most often, dentures are painful, inconvenient and unstable. Such dentures can make chewing foods difficult, limiting the foods that you once enjoyed. Modern dentistry can help with implant supported dentures,
Implant-supported overdentures stay connected with bar and clip attachment methods or use a variety of abutment-based attachments (ball, magnets, and resilient stud attachments such as Locators).
This method is suitable for patients with a good general health as well as an adequate bone quality and quantity. After surgical installation of implants minimum 4 ( optimally 6) in each jaw a temporary, screw retained ( fixed) a new set of teeth placed at the same day.
Final set of teeth usually placed 6 months later.
Over a period of time, the jaw bone associated with missing teeth atrophies and is reabsorbed. This often leaves a condition in which there is poor quality and quantity of bone suitable for the placement of dental implants. In these situations, most patients are not candidates for the placement of dental implants.
With bone grafting, we now have the opportunity to not only replace bone where it is missing, but we also have the ability to promote new bone growth in that location. This not only gives us the opportunity to place implants of proper length and width, it also gives us a chance to restore functionality and aesthetic appearance.
Most reliable and accurate way to evaluate bone volume is a 3D CT scanning ( read more).
Most common TYPES OF BONE GRAFTS
- Autogenous bone grafts: also known as autografts, are made from your own bone, taken from somewhere else in the body. The bone is typically harvested from the chin, jaw, lower leg bone, hip, or the skull. Least popular as it requires additional surgical site and more invasive treatment.
- Allogenic bone: or allograft, is dead bone harvested from a cadaver, then processed using a freeze-dry method to extract the water via vacuum.
- Xenogenic bone: is derived from non-living bone of another species, usually a cow. The bone is processed at very high temperatures to avoid the potential for immune rejection and contamination.
Both allogenic and xenogenic bone grafting have an advantage of not requiring a second procedure to harvest your own bone, as with autografts.
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