Week 1 & 2
What are the common gauge sizes and what does the size mean for the lumen size?
25g- large lumen
27g- med lumen
30g- smaller lumen
Name the cause, prevention, and management of a hematoma
- can be caused by nicking blood vessel, artery, or vein (most common site is PSA or IA) shows as discoloration and swelling
- prevent by minimizing number of penetrations, have knowledge of anatomy
- manage with direct pressure & ice, then moist heat the next day
Below 2nd premolar on out surface, transmits mental nerve and mental artery
Mental Foramen
The first signs of local toxicity are in the ?
CNS
3% concentration
3.0 max mg/lb
400mg MRD
30mg/ml 54mg/cart
Mepivicane
Local with vasoconstrictors have a pH of ______; Local without a vasoconstrictor a pH of ______.
3-4 with
5-6 without
Name the absolute contraindications for Vasoconstrictors
- cocaine
- sulfite allergy
- uncontrolled hyperthyroidism
area immediately behind third molars
looks triangular in shape
Retromolar Triangle
What are the contraindications for Nitrous?
-child under 2, or chronologically immature child
- nasal obstructions, enlarged tonsils, common cold
- middle ear or ophthalmic disturbances
- sick cell anemia
- airway resistance (emphysema, chronic bronchitis)
- Pregnancy
A healthy female weighs 100lbs
what is her MRD for Lidocaine?
2% Lido: max dose= 3.2mg/lb
100lbs X 3.2mg/lb = 320
MRD= 320mg
What is the preservative ingredient found in local anesthetics with vasoconstrictors, but not in plain local anesthetics?
Sodium Bisulfite
Describe the 5 "significance ratings" for dental drug interactions
1. major reactions
2. moderate reactions
3 minor reactions
4. major or minor reactions that are POSSIBLE
5. minor reactions that are possible but unlikely
Area on anterior border of ramus used as a landmark during IA injection
Coronoid notch
What is associated with wheals, which are smooth elevated patches of skin. with intense itching
Uticaria
After depolarization, an electric potential of _____ mV exists inside the nerve cell
+40
What are the 6 Physical Status Classifications and Definitions?
Type I: normal healthy pt
Type II: mild to mod systemic disease
Type III: severe systemic disease (elective care okay with stress reduction protocol and modifications)
Type IV: threat to life.---- Type V: Not expected to survive--- Type VI: brain dead
articulates with glenoid fossa of temporal bone
Condyle
This preservative is a major culprit when it comes to the adverse reactions to local anesthetic agents
Sodium Bisulfate
What is Saltatory conduction?
Impulse conduction in myelinated nerves occurs by means of current leaps from node (node of Ranvier) to node
Name some Relative Contraindications where vasoconstrictors should be limited
. Heart failure/attack
. Hypertension.
.Stroke
.Kidney/Liver Dysfunctions
.Taking Tricyclic anti-depressants
Bony ridge running downward from anterior border of ramus onto lateral alveolar process
Internal Oblique Line