The ability to save a tooth may depend, in some cases, on whether or not a post can be removed. For example, if a previously placed post has broken, there might be nothing to support a crown unless it can be removed, and a new post placed. In other cases, root canal retreatment can only be accomplished if a post can be removed, in order to re-access the root canal. Our doctors have exceptional experience in this area, having lectured extensively and published papers on this one subject. Utilizing ultrasonic energy, and specialized instruments for this purpose, most posts can be effectively removed without causing damage to the remaining root structure. In many cases, this ability marks the difference between saving a tooth or having an extraction.