Dental Hygiene Local Anesthesia
Questions and Answers Latest Version
100% Pass
What is the primary purpose of local anesthesia in dental hygiene procedures?
✔✔To numb the area being treated and reduce patient discomfort.
Which nerve is typically anesthetized during a routine dental cleaning?
✔✔The inferior alveolar nerve.
What is the common dosage for lidocaine in a dental procedure?
✔✔The usual dosage is 1-2 carpules (1.8 mL each) depending on patient needs.
What is the function of the vasoconstrictor added to local anesthetics?
✔✔To constrict blood vessels, prolong the effect of anesthesia, and reduce bleeding at the
treatment site.
What is the maximum recommended dose of epinephrine for a healthy adult during dental
procedures?
1
,✔✔0.2 mg of epinephrine.
How should the needle be positioned when performing an injection for local anesthesia?
✔✔The needle should be inserted at a 45-degree angle to the mucosa and directed toward the
target nerve.
What is the typical duration of effect for lidocaine with epinephrine?
✔✔Typically 60-90 minutes for soft tissue anesthesia, depending on the location.
What technique is used to prevent the patient from feeling pain when the anesthetic needle is
inserted?
✔✔The technique is called “buffering,” where the needle is introduced slowly and the tissue is
gradually numbed.
What is the difference between a topical anesthetic and a local anesthetic?
✔✔Topical anesthetics are applied to the surface of the tissue to numb only the outer layer,
whereas local anesthetics are injected into deeper tissues to numb a larger area.
What is the purpose of aspirating the syringe during the injection process?
2
, ✔✔To check for blood vessels in the area, ensuring the needle is not in a blood vessel before
administering the anesthetic.
What are the common side effects of local anesthesia?
✔✔Side effects may include numbness, tingling, or temporary swelling in the treated area.
What is the most common local anesthetic used in dental hygiene procedures?
✔✔Lidocaine.
What precaution should be taken when injecting local anesthesia into a patient with a history of
allergies?
✔✔A thorough review of the patient’s medical history is essential to ensure no allergic reactions
to the anesthetic or its components.
What is the most commonly used site for a mandibular block injection?
✔✔The area near the ramus of the mandible, just below the mandibular foramen.
How can the risk of post-injection trauma be minimized?
3
Questions and Answers Latest Version
100% Pass
What is the primary purpose of local anesthesia in dental hygiene procedures?
✔✔To numb the area being treated and reduce patient discomfort.
Which nerve is typically anesthetized during a routine dental cleaning?
✔✔The inferior alveolar nerve.
What is the common dosage for lidocaine in a dental procedure?
✔✔The usual dosage is 1-2 carpules (1.8 mL each) depending on patient needs.
What is the function of the vasoconstrictor added to local anesthetics?
✔✔To constrict blood vessels, prolong the effect of anesthesia, and reduce bleeding at the
treatment site.
What is the maximum recommended dose of epinephrine for a healthy adult during dental
procedures?
1
,✔✔0.2 mg of epinephrine.
How should the needle be positioned when performing an injection for local anesthesia?
✔✔The needle should be inserted at a 45-degree angle to the mucosa and directed toward the
target nerve.
What is the typical duration of effect for lidocaine with epinephrine?
✔✔Typically 60-90 minutes for soft tissue anesthesia, depending on the location.
What technique is used to prevent the patient from feeling pain when the anesthetic needle is
inserted?
✔✔The technique is called “buffering,” where the needle is introduced slowly and the tissue is
gradually numbed.
What is the difference between a topical anesthetic and a local anesthetic?
✔✔Topical anesthetics are applied to the surface of the tissue to numb only the outer layer,
whereas local anesthetics are injected into deeper tissues to numb a larger area.
What is the purpose of aspirating the syringe during the injection process?
2
, ✔✔To check for blood vessels in the area, ensuring the needle is not in a blood vessel before
administering the anesthetic.
What are the common side effects of local anesthesia?
✔✔Side effects may include numbness, tingling, or temporary swelling in the treated area.
What is the most common local anesthetic used in dental hygiene procedures?
✔✔Lidocaine.
What precaution should be taken when injecting local anesthesia into a patient with a history of
allergies?
✔✔A thorough review of the patient’s medical history is essential to ensure no allergic reactions
to the anesthetic or its components.
What is the most commonly used site for a mandibular block injection?
✔✔The area near the ramus of the mandible, just below the mandibular foramen.
How can the risk of post-injection trauma be minimized?
3
