As a general rule, conventional (or orthograde) rather than surgical (or retrograde) endodontics should be performed if possible-not only because additional trauma results from the surgical approach but also because apicoectomy adversely affects the crown/root ratio and thus the support of the planned prosthesis. If an existing post prevents access to a recurrent periapical lesion, the post can usually be removed. (A Masserann kit has shown some success with this-see Chapter 12.) When a post-and-core restoration is needed in an endodon-

Fig. 6-12. Commonly seen periapical lesions. A, Widened periodontal ligament space. B and C, Large radiolucencies (established granulomas or cysts). (Courtesy Dr. G. Taylor.)

tically treated tooth, 3 to 5 mm of apical seal should be retained (see Chapter 12).

Performing elective endodontics may be desirable in the following situations: when there are problems in obtaining a compatible line of draw between multiple abutments, when it is impossible to gain adequate retention in a badly worn or damaged tooth, and when the endodontic prognosis of an abutment tooth is compromised and additional preparation is likely to further jeopardize its longevity.

How To Add Ten Years To Your Life

How To Add Ten Years To Your Life

When over eighty years of age, the poet Bryant said that he had added more than ten years to his life by taking a simple exercise while dressing in the morning. Those who knew Bryant and the facts of his life never doubted the truth of this statement.

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