The recommended concentration of epinephrine to combine with lidocaine is __ when hemostasis is needed.

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Lidocaine is available in either a 1:50,000 or 1:100,000 dose of epinephrine.In dentistry,lidocaine 2% with 1:100,000 epinephrine is used for infiltration and block anesthesia.A 1:50,000 dose is used in situations for which local hemostasis is needed.Lidocaine 2% is not available with either 1:20,000 or 1:200,000 epinephrine.Generally,the 1:100,000 concentration of epinephrine is used,1:50,000 is recommended only when hemostasis is needed.

The Recommended Concentration of Epinephrine to Combine with Lidocaine Is