ISSUE # 8

Currently 22 days until the July boards! Study hard... its almost here!
I want to remind people to go to the main page of the website to sign the guestbook.

~ Andy

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A No. 2 pencil
And a dream can
Take you
anywhere.
-Joyce A. Myers

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A male patient was just waking up from anesthesia after having his wisdom teeth extracted, and his

wife was sitting by his side. His eyes fluttered open and he said, "You're beautiful." Then he

fell asleep again. His wife had never heard him say that, so she stayed by his side full of joy.

A few minutes later, his eyes fluttered open and he said, "You're cute!"

The wife was disappointed because instead of "beautiful," it was now "cute."

She said, "What happened to 'beautiful'?"

The man replied, "The drugs are wearing off!"

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Know the GV classifications of caries.
Class 1 (I) - tops (pit & fissures, occlusasls, and linguals of molars and maxillary incisors)
Class 2 (II) - back sides (proximal surfaces of premolars and molars)
Class 3 (III) - front sides (anterior proximals but NOT incisal edges)
Class 4 (IV) - front sides & tops (anterior proximals WITH incisal edges)
Class 5 (V) - gumline (cercical 3rd of facial or lingual surfaces
Class 6 (VI) - incisal edges of anterior teeth and cusps of posterior teeth

Effect dose (ED50) - dose that produces a therapuertic response in 50% of the subjects given the drug

Lethal dose (LD50) - dose that produces death in 50% of the subjects given the drug

Therapeutic Index (TI) - ration of the median lethal dose (LD50) to th emedian effective dose (ED50).

Expresses the safety of the drug. The HIGHER the TI, the safer the drug!

Cholinergic drugs - stimulate the PANS (parasymphathetic)
neurotransmitter - acetylcholine
termination is by acetylcholinersterase
ex. pilocarpine - for xerostomia: stimulates saliva

Anticholinergic drugs - inhibit the effects of the PANS (parasymphathetic)
ex. Atropine - decreases saliva

Abbreviations:
q- every
qd - every day
bid- twice a day
tid - three a day
qid - four a day
pc - before meals
hs - at bed time (hours of sleep)

Metabolization:
PEAL - Plasma=Esters : Amides=Liver

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Board Practice Questions:

1. What instrument end would you use to scale the mesial side of the distal root of # 30?
A) 11
B) 12
C) 13
D) 14

2. What is the most important thing to have in the dental office during an emergency?
A) sugar-water or similiar product
B) oxygen
C) epinephrine
D) Ammonia capsules
E) telephone

3. Which of the following nerve exits the cranium through the foramen ovale?
A. Facial
B. Maxillary
C. Opthalmic
D. Mandibular
E. Glossopharyngeal

4. A 63-year-old patient has been receiving radiation therapy for head and neck cancer. An examination reveals multiple areas of crevicular caries. This patient's condition MOST likely resulted from which of the following?
A. Accumulation of calculus
B. Change in dietary practices
C. Dysfunctional salivary glands
D. Change in types of oral bacteria
E. Excessive radiation to the dentition

5. Which of the following local anesthetics can be administered intravenously to treat cardiac
A. arrhythmias?
B. Lidocaine
C. Benzocaine
D. Prilocaine
E. Mepivacaine
F. Propoxycaine

6. Which of the following BEST represents the reason that nitroglycerin is effective in treating anginal pain?
A. Causes general vascular dilation
B. Possesses central analgesic actions
C. Produces specific coronary vasodilation
D. Increases efficiency of the myocardium
E. Has a negative inotropic effect on the heart

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Answers

1. A

2. B

3. D...The mandibular nerve is one of the three divisions of the fifth cranial or trigeminal nerve. The first division (opthalmic) exits through the superior orbital fissure, the second division (maxillary) through the foramen rotundum, and the third (mandibular) through the foramen ovale.

4. C Radiation therapy causes atrophy of the salivary glands, which results in decreased production and excretion of saliva into the oral cavity.

5. A Lidocaine is used specifically to treat ventricular arrhythmias. Benzocaine is not used in an injectable form; it is a topical anesthetic only. Propoxycaine is an ester-type anesthetic with a higher potential for an allergic reaction. Prilocaine and mepivacaine are used only as local anesthetics.

6. A Anginal pain results from myocardial ischemia. Nitroglycerin reduces pain by causing vasodilation, pooling blood in the venous system, and decreasing venous return to the heart.

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Keep Smiling and Happy Studying!!!!!!
Andy Codding, RDH
Graduated - Floyd College - May 2002
Rome, Georgia
www.AndyFutureRDH.com

Copyright 2002 - Andy Codding, RDH All rights reserved.
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