LOCAL ANAESTHESIA

All vasoconstrictors in dentistry stimulate adrenergic receptors. True Vasoconstrictors have been associated with more drug interactions than any other drugs in dentistry. True High blood pressure is always a contraindication to the use of vasoconstrictors in dentistry. False Levonordefrin is one-tenth as potent as epinephrine. False The two vasopressors routinely used in dental local anesthetic drugs in North America are ________ and ________. Epinephrine and neo-cobefrin Levono...

What nerve was damaged if the anterior 2/3 of the tongue has a loss of sensation? - Lingual What type of injection would be used to achieve homeostasis? - Infiltration Where are needles disposed? - Hazardous sharps A burning feeling from an injection can be caused by what? - Too fast of an insertion or the preservative. Why would you use caution with Amides and a patient who has Cirrhosis? - Amides are metabolized in the liver. Cirrhosis is liver failure. The mandibular division passes ...

Greater Palatine - If #15 has a periodontal abscess and you've already given the PSA, what other injection will you need to numb the lingual? Free gingival margin - You are scaling the lingual of #13, where would you give the injection for an infiltration? Mucobuccal fold, Mucogingival junction, free gingival margin, or apex of #13 Nasopalatine - A central incisor has a periodontal defect on the lingual root surface, what injection would you use? Cold and compression for 12 hours - Wh...

What happens during depolarization? - Sodium in, Potassium out Primary action of local anesthetic in producing a conduction block? - *DECREASE* sodium's ability to permeate LA *decreases* the rate of depolarization and *increases* the firing threshold True or False? - True LA blocks the sensation of pain by? - Blocking nerve conduction to a circumscribed area of the body Why does anesthesia fail to work near an abscessed tooth? - Infection lowers the pH of the tissue, which does not a...