Paresthesia of the inferior alveolar nerve caused by Hydron: a case report

Editor's Note. The following two clinical case histories by Dr. Pyner and Drs. Kaufman and Rosenberg were submitted at about the same time, have similar radiographic pictures and postoperative symptomatology, but are different in that the obturation materials used were not the same. As clinicians, we may well speculate on the "why" of such unfortunate incidents. In both cases, the filling material was inserted as pastes with the evident difficulties of accu- rate control that go along with such techniques. Secondly, one tooth was filled while the patient was under local anesthesia and the oth- er was not documented in this regard. Is it possible that filling un- :der anesthesia makes such accidents more likely as the operator is deprived of the patient's reaction to the overfill and has no indica- tion of the mishap until it is a “fait accompli”?

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