Int J Stomatol ›› 2020, Vol. 47 ›› Issue (5): 563-566.doi: 10.7518/gjkq.2020099

• Case Report • Previous Articles     Next Articles

Root canal retreatment with subcutaneous emphysema: a case report

Tan Kaixuan1,2(),Li Fan1,Zhang Lijuan1,Li Shanshan1,Lu Jie1,2,Zhang Ying1,Yang Fang1()   

  1. 1.Dept. of Stomatology, Qingdao Municipal Hospital, Qingdao 266000, China
    2.School of Stomatology, Dalian Medical University, Dalian 116044, China
  • Received:2020-02-05 Revised:2020-06-02 Online:2020-09-01 Published:2020-09-16
  • Contact: Fang Yang;
  • Supported by:
    National Natural Science Foundation of China(81670979)


Subcutaneous emphysema is a rare complication after dental treatment and is characterized by the swelling of soft tissues caused by air passing through the skin and submucosa. Air can enter the buccal space and temporal space through connective tissues in the face and neck and even spread to the thorax and mediastinum; thus, this condition is life-threatening. This article reports a case of subcutaneous emphysema during root canal retreatment of right maxillary central incisor, analyzes the causes, and discusses its diagnosis and treatment measures.

Key words: subcutaneous emphysema, root canal treatment, complication

CLC Number: 

  • R781.05


Fig 1

The radiography images before treatment"

Fig 2

The facial and intraoral images on the day of treatment (A and B) and after 10 d following the initial visit (C and D)"

Fig 3

The radiography (A, B and C) and microscope images (D) during treatment"

Fig 4

The CBCT images after treatment and 3 months following the initial visit"

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