Dental Hygiene Local Anesthesia Exam | 2026/2027 Edition – Actual Exam Questions with 100% ANS

Dental Hygiene
Local Anesthesia
Exam | 2026/2027
Edition – Actual
Exam Questions
with 100% ANS

,� DENTAL HYGIENE LOCAL
ANESTHESIA EXAM – COMPLETE
REVIEW
1�⃣ PURPOSE OF LOCAL ANESTHESIA
 Prevent pain during dental hygiene procedures
 Allow effective scaling & root planing
 Increase patient comfort and cooperation




2�⃣ TYPES OF LOCAL ANESTHETICS
AMIDES (MOST COMMON – LIVER METABOLIZED)

Mnemonic: LAMB

 Lidocaine
 Articaine
 Mepivacaine
 Bupivacaine

✔ Low allergy risk
✔ Used in modern dentistry



ESTERS (RARE – PLASMA ESTERASES)

 Benzocaine (topical)
 Procaine

⚠ Higher allergy risk (PABA)




3�⃣ VASOCONSTRICTORS (VERY TESTED)

, Purpose:

 Prolong anesthesia
 Reduce bleeding
 Decrease systemic absorption
 Lower toxicity risk

Most Common:

 Epinephrine

Concentrations:

 1:100,000 – most common
 1:200,000 – cardiac patients
 1:50,000 – hemostasis

🚨 MAX EPINEPHRINE DOSE:

 Healthy adult: 0.2 mg
 Cardiac patient: 0.04 mg ⚠




4�⃣ MAXIMUM RECOMMENDED DOSES (MRD)
Lidocaine 2% with epi

 7 mg/kg
 Max 500 mg
 ≈ 11 cartridges

Mepivacaine 3% (plain)

 6.6 mg/kg
 Max 400 mg

Articaine 4%

 7 mg/kg
 ≈ 7 cartridges

📌 Children & elderly = lower dose




5�⃣ NEEDLES & ARMAMENTARIUM