Inferior alveolar nerve paresthesia caused by the extrusion of calcium hydroxide-based paste into the mandibular canal: A case report. Issue 5 (September 2020)

• Record Type: Journal Article
• Authors: Kudoh, Keiko; Takaishi, Kazumi; Kudoh, Takaharu; Takamaru, Natsumi; Kamada, Kumiko; Miyamoto, Youji
• Is Part Of: Journal of oral and maxillofacial surgery, medicine, and pathology. Volume 32:Issue 5(2020)
• Page Start: 366
• Page End: 369
• Publication Date: 2020-09
• Subjects: Endodontic complications -- Paresthesia of the inferior alveolar nerve; Mouth -- Surgery -- Periodicals; Face -- Surgery -- Periodicals; Maxilla -- Surgery -- Periodicals; Oral medicine -- Periodicals; Mouth -- Diseases -- Pathogenesis -- Periodicals; Surgery, Oral -- Periodicals; Oral Medicine -- Periodicals; Pathology, Oral -- Periodicals; Face -- Surgery; Maxilla -- Surgery; Mouth -- Diseases -- Pathogenesis; Mouth -- Surgery; Oral medicine; Electronic journals -- Sciences; Electronic journals -- Medicine; Periodicals; 617.522059
• DOI: 10.1016/j.ajoms.2020.05.005
• Languages: English
• ISSNs: 2212-5566

Abstract

Abstract: Calcium hydroxide (Ca (OH)2 ) paste is widely used as a provisional root canal filling material. This report describes a case of inferior alveolar nerve paresthesia caused by overfilling of Ca (OH)2 paste. A 53-year-old woman had previously undergone root canal filling in the left lower second molar with Ca (OH)2 paste. Immediately after the treatment, she felt sharp pain and paralysis in the left lower lip and chin area and visited our hospital four days later. X-ray examination showed a large radiopacity associated with the left mandibular canal and around the bone marrow from the lower left second premolar to the lower left third molar. We planned a tooth extraction and surgical removal of the Ca (OH)2 paste. However, she declined surgery, and we performed conservative treatment with administration of vitamin B12 and root canal therapy. Approximately one year after her first visit, we filled the root canal with gutta-percha and sealer. The tooth was preserved and paresthesia of the left lower lip and chin largely decreased except for a small remaining numb area. Therefore, it is important to pay scrupulous attention to ensure no extrusion of Ca (OH)2 paste beyond the root apex to avoid complications.