Does a dental injection always give anxiety or it that only in the blood? do the anxiety effects wear off quick? how long? should i be worried?

Relax: The amount or length of anxious feelings are under your control. I'm guessing you just don't like needles. Most of us don't. Just take nice deep breaths and think about something pleasant. It will be over before you know it!

Rapid pulse?: Anxiety is self-generated and not "caused" by an injection. However, some injected anesthetic agents have epinephrine (adrenaline) in them which can cause a rapid heart rate for a few minutes. If you experience a rapid heart rate following an injection, you can request an anesthetic agent without epinephrine.

Talk to Dentist: The dental injection is anesthesia to control the pain. Depending on the procedure the side effects should wear off in a few hours. Talk to your dentist about the anxiety you are feeling about the dental procedures.

Varies: Anxiety often felt with a dental injection can be caused in 2 ways:The patient's own fear of the "needle" can cause anxiety and a release of epinephrine into your blood stream (fight or flight response);injection of anesthesia with epinephrine getting into the blood stream due to a nicked small blood vessel during injection-causes same response. Knowing what is going on,giving it time to resolve.

Local anesthesia: Done correctly, injection of dental local anesthesia does not cause a person any more anxiety then receiving any other type of injection would. If accidentally injected into a blood vessel, however, anesthesia with epinephrine can cause rapid heart rate and feelings of anxiety. This sometimes happens with bottom teeth. Dentists minimize the risk of complication by aspirating prior to injecting.