1. Treatment with N2root canal sealer;Ehrmann;Br Dent J,1964
2. Overfilling in root canal treatment: two accidents with N2;Orlay;Br Dent J,1966
3. Paresthesia from N2;Grossman;Oral Surg,1978
4. Paresthesia in the area of chin secondary to endodontic treatment;LaGarde;Inform Dent,1978
5. Successful retrieval of endodontic material from the inferior alveolar nerve;Forman;J Dent,1977