18 Questions
What determines the type of injection administered in maxillary anesthesia?
The site of deposition of the drug relative to the area of operative intervention
In the administration of local anesthesia, what is the significance of the AMSA injection?
It provides anesthesia with few injections and less pain
In local infiltration, the local anesthetic solution is deposited at which location?
At or above the apex of the tooth to be treated
What is the purpose of the greater palatine canal approach in local anesthesia administration?
To anesthetize the maxillary nerve
Which of the following is a type of nerve block that can be used to anesthetize the maxillary nerve?
Pterygopalatine fossa block
What is the term used to describe an injection in which the local anesthetic solution is deposited at or above the apex of the tooth to be treated?
Infiltration
What is the benefit of using a computerized local injection technique compared to a traditional syringe technique?
It is less painful for the patient
In a field block, the local anesthetic is deposited near which structures?
Larger terminal nerve branches
What is the purpose of depositing local anesthetic near the larger terminal nerve branches in a field block?
To prevent the passage of impulses from the tooth to the central nervous system
Which of the following nerves can be anesthetized using an intraoral maxillary nerve block?
Maxillary nerve
What is the purpose of the second-division nerve block in local anesthesia administration?
To anesthetize the zygomatic nerve
What is the site of injection in relation to the site of treatment in a field block?
Away from the site of treatment
What is the recommended rate of needle insertion during a maxillary nerve block?
1 to 2 mm every 4 to 6 seconds
What is the recommended rate of local anesthetic administration during a pterygopalatine fossa block?
0.5 mL/min
What is the primary advantage of the greater palatine canal approach over traditional injections?
Less anesthetic volume required
What is a potential complication of the second-division nerve block that can occur 1 to 2 days postoperatively?
Palatal ulcer at the injection site
Why is it important to avoid excessive concentrations of a vasoconstrictor during a maxillary nerve block?
To reduce the risk of ischemia
What can be done to prevent the squirt back of anesthetic and bitter taste during a pterygopalatine fossa block?
Aspirate while withdrawing the syringe from tissue
Study Notes
Local Anesthesia Techniques
- Three major types of local anesthetic injections: local infiltration, field block, and nerve block
Local Infiltration
- Involves flooding small terminal nerve endings in the area of dental treatment with local anesthetic solution
- Example: administering local anesthetic into an interproximal papilla before root planing
Field Block
- Involves depositing local anesthetic near larger terminal nerve branches
- Anesthetized area is circumscribed, preventing passage of impulses from the tooth to the central nervous system
- Incision or treatment is performed in an area away from the site of injection
Techniques for Maximizing Pain Control
- Slow needle insertion (1-2 mm every 4-6 seconds)
- Slow administration of local anesthetic (0.5 mL/min)
- Using less anesthetic volume than necessary if administered via traditional injections
AMSA Injection
- Highly successful for maxillary incisors
- May require additional dental injection in patients with long canine roots
- Can cause palatal ulcer at the injection site, which is self-limiting and heals in 5-10 days
Complications
- Palatal ulcer at the injection site developing 1-2 days postoperatively
- Unexpected contact with the nasopalatine nerve
- Density of soft tissues at the injection site causing squirt back of anesthetic and bitter taste
Prevention of Complications
- Slow administration to avoid excessive ischemia
- Avoiding excessive concentrations of vasoconstrictor (e.g., 1:50,000)
- Aspirating while withdrawing the syringe from tissue
- Pausing for 3-4 seconds before withdrawing the needle to allow pressure to dissipate
- Instructing the assistant to suction excess anesthetic that escapes during administration
This quiz covers various techniques of maxillary anesthesia, including local infiltration, field block, and nerve block. It explains the different types of injections administered to achieve pain control with local anesthetics. Test your knowledge of these anesthesia methods and their applications.
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