Vasoconstrictors and the heart

Area of Science:

• Dentistry
• Pharmacology
• Cardiology

Background:

• The use of vasoconstrictors in dental applications, including local anesthetics, hemostatic agents, and gingival retraction cords, is a subject of ongoing discussion.
• While vasoconstrictors demonstrably improve anesthetic efficacy and minimize systemic absorption, their safety profile, particularly concerning cardiovascular effects, requires careful consideration.

Purpose of the Study:

• To evaluate the safety and efficacy of vasoconstrictors used in dentistry.
• To provide guidelines for the judicious use of vasoconstrictors in local anesthetics and gingival retraction cords, especially in patients with cardiovascular conditions.

Main Methods:

• Review of existing data on the cardiovascular effects of vasoconstrictors, primarily epinephrine, in dental settings.
• Analysis of systemic epinephrine levels resulting from topical and injectable vasoconstrictor use.
• Consideration of endogenous epinephrine release during dental stress.

Main Results:

• Vasoconstrictors significantly enhance local anesthetic efficacy and reduce systemic uptake.
• Elevated blood epinephrine levels from vasoconstrictor use are generally not associated with significant cardiovascular effects in healthy or mildly to moderately compromised patients.
• Epinephrine-impregnated retraction cords require cautious use in specific patient populations.

Conclusions:

• Vasoconstrictors in dental local anesthetics are safe and effective for most patients when used judiciously.
• Patients with significant cardiovascular disease may require reduced dosages or non-vasoconstrictor anesthetics.
• Careful consideration and potential avoidance of epinephrine-impregnated cords are necessary for certain patients.