Abstract
The complication after dental implant treatment increases recently termed peri-implantitis. We report a case of a tracheostomy of phlegmon caused by wide range of peri-implantitis. A 76-years-old male patient who diagnosed diabetes mellitus, had extended the phlegmon from the submandibular to the shoulder girdle. The swelling and redness appeared bilaterally in the oral cavity floor. The patient had five dental implants in his lower molar region, 2 were right, 3 were left, respectively. The one of right side dental implant was suffered from peri-implantitis. The patient firstly went to his private dentist for detailed examination about the swelling of the oral cavity, then transferred to our department on the same day. We performed extraoral incision and tracheotomy the following day. The postoperative progress was uneventful without any sequelae after 1-year follow-up. We herein report a case of peri-implantitis with their retrospective studies.
https://ror.org/03bwzch55 
