Endodontic Success and Failure
It is possible that after conventional endodontic therapy has been completed, little to no resolution of the periapical lesion occurs over a considerable amount of time; there is a great deal of current research that discusses the possible reasons for this outcome and suggests possible treatment options. For example, it has been demonstrated that there is an association between nonresolving apical periodontitis lesions and the presence of cholesterol clefts within the periapical lesion; in fact, an incidence of up to 44% has been reported! It was shown that macrophages joined to form multinucleated giant cells and then produced a well-circumscribed area of tissue reaction, not unlike the granulomatous tissue reactions of a typical foreign body reaction, and persisted for up to 8 months. Similarly, endodontic materials as well as food debris may also be the cause of persistent periapical lesions. It was once shown that contaminated gutta percha resulted in a persistent periapical lesion for more than a decade!
Read more about this topic: Healing Of Periapical Lesions
Famous quotes containing the words success and/or failure:
“Priests and physicians should never look one another in the face. They have no common ground, nor is there any to mediate between them. When the one comes, the other goes. They could not come together without laughter, or a significant silence, for the one’s profession is a satire on the other’s, and either’s success would be the other’s failure.”
—Henry David Thoreau (1817–1862)
“In the deeper layers of the modern consciousness ... every attempt to succeed is an act of aggression, leaving one alone and guilty and defenseless among enemies: one is punished for success. This is our intolerable dilemma: that failure is a kind of death and success is evil and dangerous, is—ultimately—impossible.”
—Robert Warshow (1917–1955)