Podcast
Questions and Answers
What factor affects the onset of action of a local anesthetic used in oral surgery?
What factor affects the onset of action of a local anesthetic used in oral surgery?
- The amount of drug removed by local blood vessels
- Proximity to the target nerve (correct)
- Duration of action
- Type of vasoconstrictor added
Why are vasoconstrictors added to local anesthetics for oral surgery?
Why are vasoconstrictors added to local anesthetics for oral surgery?
- To prolong the duration by dampening the effects of local vessels on drug removal (correct)
- To speed up the onset of action
- To reduce the amount of drug deposited
- To increase the pH of the solution
Which anesthesia lasts a shorter time: pulpal anesthesia of maxillary teeth after local infiltration or pulpal anesthesia of mandibular teeth after block anesthesia?
Which anesthesia lasts a shorter time: pulpal anesthesia of maxillary teeth after local infiltration or pulpal anesthesia of mandibular teeth after block anesthesia?
- Maxillary teeth after local infiltration (correct)
- Mandibular teeth after block anesthesia
- There is no difference in duration
- Both last for the same duration
How does the amount of drug deposited affect the duration of action of a local anesthetic?
How does the amount of drug deposited affect the duration of action of a local anesthetic?
What is the role of vascularity of tissue in the duration of action of a local anesthetic?
What is the role of vascularity of tissue in the duration of action of a local anesthetic?
Why does pulpal anesthesia disappear earlier than soft tissue anesthesia in some cases?
Why does pulpal anesthesia disappear earlier than soft tissue anesthesia in some cases?
What is the purpose of local anesthesia in dentistry?
What is the purpose of local anesthesia in dentistry?
Why is it optimal to limit the number of different forms of a drug used by those administering local anesthesia?
Why is it optimal to limit the number of different forms of a drug used by those administering local anesthesia?
In local anesthesia, which ions are allowed to shift across the nerve membrane upon depolarization?
In local anesthesia, which ions are allowed to shift across the nerve membrane upon depolarization?
How does local anesthesia affect motor nerves?
How does local anesthesia affect motor nerves?
What is a paradoxical effect in relation to drug reactions?
What is a paradoxical effect in relation to drug reactions?
What is the main goal in properly performing oral surgery on an awake patient?
What is the main goal in properly performing oral surgery on an awake patient?
What is the primary mechanism of action of local anesthetics?
What is the primary mechanism of action of local anesthetics?
At what pH do local anesthetics without vasoconstrictors typically work best?
At what pH do local anesthetics without vasoconstrictors typically work best?
Why do manufacturers lower the pH of local anesthetics when adding vasoconstrictive agents like epinephrine?
Why do manufacturers lower the pH of local anesthetics when adding vasoconstrictive agents like epinephrine?
What effect does local anesthetic pH have on its effectiveness when injected into an area of inflammation/infection?
What effect does local anesthetic pH have on its effectiveness when injected into an area of inflammation/infection?
How do local anesthetics primarily affect nerve membranes to prevent impulse conduction?
How do local anesthetics primarily affect nerve membranes to prevent impulse conduction?
What factor influences the speed of onset and duration of action of local anesthetics?
What factor influences the speed of onset and duration of action of local anesthetics?
