Bleeding related to dental treatment in patients taking novel oral anticoagulants (NOACs): a retrospective study

ObjectiveSeveral novel oral anticoagulants (NOACs) are currently prescribed for patients suffering from atrial fibrillation, pulmonary thromboembolism, and venous thrombosis. However, there is no clinical guideline for dental treatment in patients taking NOACs. This study investigated bleeding events related to various dental treatments.Materials and methodsThis retrospective study included 120 patients (153 cases) who were prescribed NOACs and received dental procedures in the Department of Advanced General Dentistry at Yonsei University Dental Hospital from January 2014 to June 2017. The indication for NOACs, initiation of NOACs, duration of discontinuance, creatinine clearance, and type of dental treatment were investigated. Bleeding events were assessed at a follow-up visit to the clinic.ResultsPostoperative bleeding occurred in only 9 of the 153 included cases; they comprised 2 cases of scaling, 3 cases of simple extraction, 3 cases of the first stage of implant surgery, and 1 case of resin filling. The creatinine clearance (P=.111) and duration of discontinuance (P=.222) did not differ significantly between the groups with and without bleeding events.ConclusionsOur data indicate that most dental treatments may be performed in patients taking NOACs without an increased likelihood of bleeding events regardless of the discontinuance duration. Moreover, any postoperative bleeding can be stopped by applying compressive pressure or local hemostatic agents.Clinical relevanceOur study suggests that patients taking NOACs who need dental treatments may have a bleeding tendency based on our retrospective data. Preoperative history taking and treatment modification should therefore be considered before performing dental surgery.