4DD Dental Anesthesia 100-200 Dr Tung Leang

100. The area of injection mucobuccal fold between the mandible premolars is called

Mental Nerve Block

IAN Block

Long buccal Nerve block

101. Gow- Gate nerve block The trigeminal nerve is predominantly sensory, and motor nerve, who supplied for the three large trunks, originate from the ganglion. Which of the following nerves is supply related only sensory?

the maxillary nerves

σ� the mandibular nerve

the lingual nerve

The infra-orbital nerve

102. The trigeminal nerve is the sensory fibres form the semilunar ganglion (the Gasserian ganglion). Where does these ganglion or Gasserian lie in the bottom of the following?

σ� the middle cranial fossa

The posterior cranial fossa

σ� the anterior cranial fossa

the roof of the cranial fossa

103. The maxillary nerve exclusively sensory, passes through the foramen rotundum to reach the pterygopalatine fossa, where it off a number of branches.How many branches will theses nerves passes through the sphenopalatine ganglion?

104. Which of the following nerves are entering the sphenopalatine ganglion?

The greater, the nasopalatine nerve and posterior nasal nerve twigs

σ� The greater palatine nerve, and the posterior superior alveolar nerve

The greater palatine nerve, and the middle superior alveolar nerve

The greater palatine nerve, and the anterior superior alveolar nerve

105. The infraorbital nerve are supply for the front teeth both side left and right of the maxillary , especially for anterior superior alveolar nerve twigs and leave the trunk just before it exit of the infraorbital foramen and outside the foramen twigs to the skin between the nostril and eye.Which area is used for injection local anesthesia for these teeth?

At the apex between the canine and first premolar

At the apex between the second premolar and first molar

At the apex between the second and third molar

at the apex between the first and second molar

106. Nerve impulse travel in myelinated nerves by a process called what?

σ� Domino effect

Salutatory conduction

σ� Relative refractory

Nodes of Ranvier

108. What is one important way that local anesthetic drugs differ from all other drugs used in dentistry?

High potential of overdose

Route of administration

Rate of uptake into bloodstream

Action ceased when absorbed into bloodstream

Blood levels must be sufficient to exert effect

109. When procaine undergoes metabolic breakdown, the major metabolic product (metabolite) is what

σ� Pseudocholinesterase

chloroprocaine

Succinylcholine

112. All of the following are reasons to include a vasoconstrictor, ECEPT one.Which one is the EXCEPTION?

Lower blood flow to injection site

Increase anesthetic blood levels

Increase duration of local anesthetic

Lower anesthetic toxicity

Improve field of vision for treatment

113. When it is necessary to administer more than one anesthetic drug, a safe total should be determined by not exceeding what?

The lower of the two maximum doses for the individual agents

The maximum dose of each drug being administered

25% of the maximum dose of each drug being administered

σ� 35% of the maximum dose of each drug being administered

Dental work being done in many more than on quadran

115. A healthy patient weighing 155 lbs has been given 2 cartridges of 2% lidocaine with epinephrine 1:100,000. How many MORE cartridges of 3% arestocaine can they have?

4.0

σ� 4.2

σ� 4.4

4.6

116. All of the following are ways of caring for a syringe EXCEPT one. Which one is the EXCEPTION?

σ� Place in an ultrasonic bath

σ� dismantle and lubricate every 5 uses

σ� Sharpen or replace harpoon as needed

Rinse syringe of saliva and foreign matte

Clean with an ultrasonic instrument

117. In the dental office, the MOST important consideration when selecting a syringe type is the ability of the following:?

Delivery anesthetic solution to a patient

Aspirate

Accept a 30 gauge needle

σ� Be cost effective

118. In local anesthetic dissociation, tissues with a low pH would have effect on base(RN) and cation(RNH+) in the solution?

A lower portion of RN and higher portion of RNH

A lower portion of RNH+ and a higher portion of RN

Rapid onset of local anesthetic

Increase duration of local anesthetic

Decrease potency of local anesthetic

119. After properly loading the cartridge into the syringe, a few drops of local anesthetic should be expelled. Why?

The ensure proper placement of the harpoon

To ensure free flow of the solution

The ensure the correct anesthetic has been used

To ensure the needle has not been barded

To ensure the ability to aspirate

120. The major factor influencing the ability to aspirate is what?

121. All of the following methods will REDUCE the chance of needle breakage, EXCEPT one. Which one is the exception?

Establishing a firm hand rest

Using a larger gauge needle

Burying the needle to the hub

Minimizing the need for redirection in tissue

Not bedding the needle excessively

122. The antioxidant used to preserve epinephrine in a local anesthetic solution is?

123. A small bubble of approximately 1 to 2 mm diameter will frequently be found in the local anesthetic cartridge. These bubbles are cause by what

The anesthetic solution being frozen

The cartridge was stored in a chemical disinfectant

Nitrogen gas being pumped in during manufacturing

σ� Oxygen gas being trapped in the cartridge

σ� Shaking the cartridge vigorously

124. Distilled water is added to the cartridge for what purpose?

To make the solution isotonic with the tissues of the body

To increase the safely and the duration of the anesthetic

To prevent the biodegradation of the vasopressor

To provide the volume of the solution

σ� To prevent the probation of nerve impulses

125. Topical antiseptic does which of the following?

Numbs 2-3mm of tissue prior to injection

Makes patient more comfortable during initial penetration

Lessens the chance of inflammation or infection

Allows the clinician to practice their site of penetration

Reduces the risk of a local anesthetic overdose

126. What is the MOST important reason hemostats/cotton roll pliers are part of the armamentarium?

They are used to remove the Deptinpatch

They are used to place a cotton roll on the needle

They are used for the retrieval of a broken needle

They are used to place the plastic cap on the needle

They are used to unscrew the needle from the syringe

127. At what time are professionals MOST at risk for a needle stick?

128. All of the following are acceptable ways of recapping a needle EXCEPT?

σ� Carefully direction the cap over needle with fingers

σ� Utilizing “Card” or other holding device

Performing the one handed scoop technique

Implementing cotton roll pliers or a hemostat

Securing cap with fingers on vertical syringe

129. Stacey, a 18 year old soccer player, arrives for extraction of teeth #4,12, and 20, and she is given 5 cartridges of 4% Articaine with epi 1:100,000.Her mother calls 3 hours following the appointment stating that Stacey appears cyanotic and sluggish. Her nail beds look dark and the blood in the extraction sites is chocolate brown. What is MOST likely the condition presented?

130. A patient with epilepsy is scheduled for root planning and scaling with local anesthetic today. What should the dental hygienist know about this condition?

Epilepsy is a relative contraindication to ester type anesthetics

In low doses local anesthetic is an anti-convulsant

The patient should be pre-medicated prio to treatmen

Epilepsy is an absolute contraindication to amide type anesthetics

Oxygen should be available to deliver in an emergency.

131. A patient attends for an extraction of a lower molar tooth. Following the administration of an inferior alveolar nerve block only, the patient complains of pain during the procedure.Which one of the following nerves is the most likely to be responsible for the perception of this pain?

132. Which one of the following local anesthetic agents (at the correct dosage) is the most likely to provide the most prolonged analgesia?

133. Which of the following local anesthetics is used exclusively for its good surface activity and low toxic potential?

134. Which of the following drugs can cause methemoglobinnemia when used in larger doses for regional anesthesia?

135. Epinephrine added to a solution of lidocaine for local anesthesia will:?

Cause cyanosis locally

σ� Increase the risk of convulsion

Increase the duration of local anesthesia

Increase the absorption of lidocaine

Decrease the heart rate when absorbed

136. Vasoconstrictor in local anesthetic(LA) solution is used to ?

Reduces toxic effects of LA

Decreases depth & duration LA.

Increases bleeding

σ� Increases toxic effects of LA

139. When injecting Local anesthetic solution in maxilla on buccal side. Which of the following technique is used?

141. Disto buccal root of upper 1st molar is supplied by:?

142. Which of 2 nerves blocked when injection is given in pterygo mandibular space?

Buccal & lingual nerve

Lingual & inferior alveolar nerve

Buccal & inferior alveolar nerveBuccal & inferior alveolar nerveBuccal & inferior alveolar nerve

Buccal nerve & infra orbital nerve

Inferior alveolar & posterior superior alveolar nerve

143. Blanching at the site of injection is caused by:?

144. What are the local anesthetic produce for:?

σ� analgesia, amnesia, loss of consciousness

Blocking pain sensation without loss of consciousness

Alleviation of anxiety and pain with an altered level of consciousness

a stupor or somnolent state

145. A good local anesthetic agent shouldn’t cause:?

σ� Local irritation and tissue damage

σ� systemic toxicity

σ� Fast onset and long duration of action

σ� Vasodilation

146. Most local anesthetic agents is consist of :?

Lipophilic group (frequently an aromatic ring)

Intermediate chain (commonly including an ester or amide)

σ� amino group

All of the above

147. Which one of the following groups is responsible for the duration of the local anesthetic action?

Intermediate chain

Lipophilic group

Ionizable group

Nonionize group

148. Indicate the local anesthetic agent, which has a shorter duration of action:?

Lindocaine

Procaine

Bupivacaine

Articaine

149. Which one of the following groups is responsible for the potency and the toxicity of local anesthetic?

Inonizable group

Intermediate chain

Lipophylic group

Non Ionize group

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4DD Dental Anesthesia 100-200 Dr Tung Leang

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