Platelet Levels Associated With Bleeding Risk for Dental Interventions: A Systematic Review.

Area of Science:

• Oral surgery and Periodontology
• Hematology
• Patient Safety

Background:

• Preoperative low platelet counts (thrombocytopenia) are a concern for surgical bleeding.
• Dental interventions, especially oral surgery, carry a risk of postoperative bleeding.
• Evidence regarding the safety of dental procedures in patients with low platelet counts is limited.

Purpose of the Study:

• To synthesize evidence on postoperative bleeding after dental interventions in patients with preoperative platelet counts below 50,000/μL.
• To compare bleeding rates in patients with low platelet counts versus those with normal counts undergoing dental procedures.
• To inform clinical decision-making regarding dental treatment for thrombocytopenic patients.

Main Methods:

• A quantitative synthesis without meta-analysis was performed.
• An extensive electronic literature search was conducted on Ovid MEDLINE and Embase.
• Studies published from 1946 to April 2024, with no restriction on design, were included.

Main Results:

• The review included 16 studies comprising 983 cases (968 oral surgery, 10 periodontology, 5 dental anesthesia).
• Postoperative bleeding occurred in 12.9% of patients with platelet counts <50,000/μL, compared to 4.9% in those with counts ≥50,000/μL.
• A significantly higher risk ratio (2.95) for bleeding was observed in the low platelet count group.

Conclusions:

• Low preoperative platelet counts (<50,000/μL) do not appear to be an absolute contraindication for dental interventions.
• However, a higher rate of postoperative bleeding, particularly after oral surgery, is associated with lower platelet counts.
• Individual patient assessment is recommended, and further controlled trials are needed to clarify risks and management strategies.