Sunday, November 20, 2011

BONE GRAFTING AND GUIDED TISSUE REGENERATION AT THE TIME OF TOOTH EXTRACTION.

At our office tooth extraction sites are managed with the placement of a bone graft into the extraction socket and placement of a membrane over the bone graft.
The rationale for doing this is multi faceted. For instance, in the anterior (front) of the mouth where the residual boney walls after an extraction are usually very thing and will generally resorb about 30% creating an unaesthetic gum architecture this could create an unfavorable unaesthetic sequel for future prostadontic replacement, ie: implant or bridge.
Thus the placement of a bone graft in the extraction site with a membrane over the bone graft will help maintain the height of the residual boney ridge for future tooth replacement with a greater aesthetic result.
Another advantage of using a bone graft and membrane after an extraction, for instance, in a 3rd molar area, is to prevent food from entering the extraction site.
When food enters the extraction site, the bacteria in the food as well as the food itself, slows the healing process creating more post operative discomfort as well as potential for injection “dry socket”.
The placement of the bone graft, by acting as an internal band aid speeds the healing process and comfort of the patient.
The bone graft and the membrane both resorb as they induce the patient’s own bone to regenerate in the extraction site.
The artificial bone also acts as a scaffold for patients own newly regenerated bone. The membrane covering the bone graft prevents the patients gum tissue epithelial cells from growing down into the grafting area impeding regeneration.
TECHNIQUE
Tooth is carefully extracted from socket. All granulated tissue and infective tissue is curated out of extraction socket to completely obliterate it and sometimes placed in boney defects of adjacent teeth. This bone graft is of non human and non animal source.
A resorbed membrane is carefully placed over bone grafted area and tucked under gum tissue. The gum tissue is then sutured a tight as possible over the grafted area.
We have gotten excellent results using this process with extraction sites over many years.

Dr. Steven Sarin, DDS
Berkeley Dental Associates

A HIGH-STRENGTH, AESTHETIC RESTORATIVE DENTAL MATERIAL

An example of such a tooth colored, fracture resistant material is zirconium oxide. A dental manufacturer, Ivoclar- Vivadent  has released the IPS E. Max System. This ceramic system can be fabricated in a Press manner to increase the strength of the restoration.This glass-ceramic ingot of Lithium Dislicate gives increased hardness and fracture resistance to the permanent onlay or crown. A more aesthetic use of the E. Max System is with a CAD/CAM machine. Anterior crowns and attractive veneers are produced by this method.
  I would like to offer some frequently asked questions concerning these ceramic restoratives!
QUESTION: Some of my co workers have found their crowns have chipped? Have the technician and dentist solved this difficulty?
ANSWER: The composition of the newer ceramic restorations can withstand a patient who demonstrates bruxism. The marginal fit is very precise, insuring a durable procedure.
QUESTION: How attractive are the anterior crowns and veneers?
ANSWER: The manner in which light reflects onto these restorations is most life like and natural.No other dental material compares to the glass-ceramic, lithium disilicate, E.  Max Crown.
 Please note pre and post op cases. 

Dr. Jerry M. Brown, DDS

Berkeley Dental Associates