clinical evaluation of vascular malformation of the oral region treated by photocoagulation with an Nd:YAG laser. We report on the clinical characteristics of 70 patients who were treated for vascular malformations of the oral region from 2004 to 2012 in our hospital. The patients consisted of 23 males and 47 females, with a median age of 49.7 years. The parts in which a lesion existed were : lips 34 cases, tongue 27 cases, buccal mucosa 7 cases, gum 3 cases, mouth floor 2 cases, and soft palate 1 case. Legion size was classified into two groups : a small size of < 15mm, and a large size of 15mm ≦ , and the necessity for hospitalization, in an operation and postoperative bleeding, swelling, pain, scar formation, nerve paralysis, postoperative infection,
The purpose of this study was to investigate the risk factors associated with postextraction persistent bleeding in patients on warfarin or direct-acting oral anticoagulants (DOACs) and the ability of risk scores to predict post-extraction bleeding. Methods 391 patients taking warfarin or DOACs underwent tooth extractions. Various risk factors for post-extraction bleeding, including number of tooth extraction, with antiplatelet therapy, and risk scores, were investigated by univariate and multivariate analyses. A post-extraction bleeding was classified into Grade 1-3. Results The incidence of post-extraction bleeding was 26.8% (77 out of 287 patients; Grade 1: 63, Grade 2:14) in patients taking warfarin, and 26.0% (27 out of 104 patients; Grade 1: 20, Grade 2:7) in patients taking warfarin DOACs. Multivariate analyses showed that multiple teeth extractions and HAS-BLED scores (above 3 points) in patients taking warfarin, and only multiple teeth extractions in patients taking DOAC, were significantly associated with post-extraction bleeding, respectively. Conclusion Most of the post-extraction bleedings were Grade 1, which can be stopped by eligibly pressing gauze by surgeons. If patients taking anticoagulants are scheduled to undergo multiple teeth extractions or their HAS-BLED score are above 3 points (if warfarin), we recommend informing patients risk of post-extraction bleeding before operation, taking carefully hemostasis, and instruction patients to bite down accurately on the gauze for longer than usual.
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