Dizzy, fainting after taking anesthesia injections for filling and crowing teeth. Is it dangerous ?
Patient: hello doctor , i m a 23 years old female . i am asking about dental local anesthesia i have to get all my teeth filled and crowned , i have been using anesthesia for 7 months nw with approximately 2 injections per week. at the beginning it was going fine but during the past three weeks i am feeling very dizzy and fainting all the time and this feeling increases on the day i visit my dentist . i would like to know if repetitive doses of anesthesia for a long period of time is dangerous and could cause me further problems . thank you Doctor: dear friends,thanks for sharing your concern,local  anesthetic (LA) will temporarily  interrupt conduction when absorbed into the nerve. a blockade of afferent nerve transmission produces anesthesia and lack of all sensations. blockade of those fibers transmitting pain , sensation only results in regional analgesia.the perception of heat cold and pressure are abolished by higher concentration of anesthetic agent then are required for interruption for pain.the local anesthetic produces loss of function in following order, pain , temperature, proprioception and skeletal muscle tone .the return  sensation in the reverse order is expected.some times patient under the effect of anesthesia traumatize  their tongue cheek or lips for this reason  longer acting agents may be contra indicated.remember the local anesthetic solution are eventually absorbed in to the general circulation and can have toxic manifestation in overdosage.yes repipititive usage of local anaesthesia have too many side effects like syncope,muscle trismus,haematoma,and adverse effects on CNS(central nervous system),and CVS(Cardio vascular system.therefore i would suggest, minimal usage of anaesthesia is best,if required post treatment analgesics could be prescribed.please donot be apprehensive about dental treatment.if required you can take anti anxiety agents like alprazolam.hope this helps.thanks.