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Causes and timing of delayed bleeding after oral surgery
Cornelia Czembirek1, Wolfgang Paul Poeschl, Christina Eder-Czembirek
1University Clinic of Cranio-, Maxillofacial and Oral Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria, cornelia.czembirek@meduniwien.ac.at.
Clinical Oral Investigations
|November 30, 2013
Summary
Postoperative bleeding after oral surgery is common, especially after molar extractions. Anticoagulant therapy and congenital blood disorders increase bleeding risk, requiring careful patient management.
Area of Science:
- Oral Surgery
- Hematology
- Anesthesiology
Background:
- Postoperative bleeding after oral surgery necessitates hemostatic intervention.
- Understanding factors influencing bleeding onset and duration is crucial for patient care.
Purpose of the Study:
- To investigate the reasons for and timing of postoperative bleeding after oral surgery.
- To identify patient-specific factors associated with prolonged bleeding intervals.
Main Methods:
- Retrospective analysis of 1,819 patients undergoing oral surgery between 1998 and 2009.
- Negative binomial regression models (NegBin II) used to analyze factors influencing bleeding interval.
- Statistical significance tested using Wald's test and likelihood ratio test.
Main Results:
- 60.1% of patients did not take anticoagulants; 21.5% took phenprocoumon, 12.7% acetylsalicylic acid.
- 95.3% of simple tooth extractions resulted in bleeding, with 69.7% in the molar region.
- Anticoagulant therapy (phenprocoumon) and congenital clotting disorders significantly prolonged bleeding intervals.
Conclusions:
- Tooth extractions, particularly in the molar region, carry a significant risk of postoperative bleeding.
- Anticoagulant therapy and congenital blood disorders complicate oral surgery and increase bleeding risks.
- Optimizing surgical timing, patient education, and developing potent local coagulants are essential for managing bleeding risks.
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