DH115 Exam 3

Which of the following structures is the superior boundary of the pterygomandibular space? A. lateral pterygoid muscle B. medial pterygoid muscle C. temporalis muscle D. ramus of the mandible

Lateral pterygoid muscle

The site of penetration for the inferior alveolar nerve block is never: A. lateral to the pterygomandibular raphe B. medial to the internal oblique ridge C. medial to the pterygomandibular raphe D. in the pterygomandibular triangle

medial to the pterygomandibular raphe

The difference between the incisive and mental nerves is: A. only the mental nerve is a branch of the inferior alveolar nerve B. only the incisive nerve provides innervation to the anterior mandibular teeth C. only the incisive nerve is a branch of the inferior alveolar nerve D. only the mental nerve provides innervation to the anterior mandibular teeth

only the incisive nerve provides innervation to the anterior mandibular teeth

Depositing the local anesthetic too medially for the inferior alveolar nerve block may result in ineffective anesthesia because: A. the anesthetic is absorbed by the parotid capsule B. the anesthetic does not effectively diffuse through the sphenomandibular ligament C. the anesthetic does not effectively diffuse through the ramus D. the anesthetic does not effectively diffuse through the pterygomandibular raphe

the anesthetic does not effectively diffuse through the sphenomandibular ligament

The volume of local anesthetic solution deposited for the nasopalatine nerve block is: A. 0.1 ml B. 0.9 ml C. 0.3 ml D. 0.6 ml

0.3ml

What volume of local anesthetic solution is given for the inferior alveolar nerve block? A. 1.2 ml B. 0.6 ml C. 1.5 ml D. 0.9 ml

1.5ml

The depth of needle penetration for the inferior alveolar nerve block is: A. 10-12 mm B. 20-25 mm C. 14-18 mm D. 8-10 mm

20-25mm

The needle used for the inferior alveolar nerve block is: A. 27 gauge long B. 25 gauge short C. 25 gauge long D. 27 gauge short

25 gauge long

Which needle is recommended for the nasopalatine nerve block? A. 25 gauge long B. 27 gauge long C. 25 gauge short D. 27 gauge short

27 gauge short

According to the SCC technique handout for the lingual nerve block, the needle should be advanced approximately ___ from the site of penetration prior to administering a few drops of local anesthetic solution for the lingual nerve. A. 20-25 mm B. 15-18 mm C. 8-10 mm D. 12-15 mm

8-10mm

When administering the inferior alveolar nerve block for an "average size adult" patient, the site of penetration is approximately 3-5 mm above the occlusal plane of the mandibular molars, or about one fourth of the way up the pterygomandibular raphe. A. True if patient has Class II occlusion B. Always false C. True if patient has Class III occlusion D. Always true

Always false

The right lingual nerve innervates: A. the gingiva of the lingual side of #29 B. all above C. the periosteum overlying the lingual of #31 D. the mucous membranes of the floor of the mouth lingual to #27

All of the above

Which of the following statements is/are true? A. The lingual nerve is a branch of the posterior division of the mandibular nerve B. All of the above are true C. The mylohyoid nerve is a branch of the posterior division of the mandibular nerve D. The inferior alveolar nerve is a branch of the posterior division of the mandibular nerve

All of the above are true

For the buccal nerve block, the syringe barrel is positioned over the contralateral premolars. A. True only if patient has localized infection at the site of penetration B. False only if patient has trismus and is unable to open the mouth C. Always false D. Always true

Always false

The overall success rate of the inferior alveolar nerve block is 95%. A. Always true B. True if using the 25 short needle C. Always false D. True if using the 27 short needle

Always false

When administering the inferior alveolar nerve block, the operator should have the syringe barrel positioned over the contralateral canine and lateral incisor. A. True if patient is smaller than an average adult B. Always true C. Always false D. True if patient has Class III occlusion

Always false

By requesting the patient to open very wide, the operator is less likely to touch the lingual nerve with the needle when administering the inferior alveolar and lingual nerve blocks. A. True only if patient has Class II occlusion B. False if patient is larger than an average adult C. Always false D. Always true

Always true

The site of penetration for the buccal nerve block is: A. in the middle of the internal oblique ridge B. In the middle of the external oblique ridge C. at the level of the distobuccal cusp of the terminal molar D. both b and c

In the middle of the external oblique ridge At the level of the distobuccal cusp of the terminal molar

The nasopalatine nerves enter/exit the oral cavity via the: A. anterior palatine foramen B. lesser palatine foramen C. incisive foramen D. maxillary anterior foramen

Incisive foramen

The nasopalatine nerve innervates: A. pulpal tissue of #8 B. lingual periosteum overlying #14 C. lingual gingiva of #10 D. all above

Lingual gingiva of #10

Contraindications to the inferior alveolar and lingual blocks are: A.Pulpal anesthesia of the mandibular molars is required B. patient is at high risk for self-mutilation while anesthetized (children and mentally disabled patients) C. patient is a hemophiliac D. Both b and c

Patient is at high risk for self-mutilation while anesthetized (children and mentally disabled patients) Patient is a hemophiliac

Which of the following structures is the medial edge of the pterygomandibular triangle? A. pterygomandibular raphe B. temporalis muscle C. sphenomandibular ligament D. lateral pterygoid muscle

Pterygomandibular raphe

Which of the following structures is the lateral boundary of the pterygomandibular space? A. medial pterygoid muscle B. lateral pterygoid muscle C. ramus of the mandible D. temporalis muscle

Ramus of the mandible

Which of the following statements is/are true? A. The mandibular nerve is part of the Cranial Nerve VII B. The anterior division of the mandibular nerve is larger than the posterior division C. The anterior division of the mandibular nerve is composed primarily of sensory nerve branches D. The buccal nerve is a branch of the anterior division of the mandibular nerve

The buccal nerve is a branch of the anterior division of the mandibular nerve

The left inferior alveolar nerve innervates: A. the left anterior 2/3 of the tongue B. the pulpal tissue of #18 C. the buccal gingiva of #19 D. all above

The pulpal tissue of #18

Which of the following complications is most likely to occur if the needle is directed too medially during the administration of an inferior alveolar nerve block? A. transient paralysis of the facial nerve B. Trismus C. Hematoma D. both a and b

Trismus

The right buccal nerve innervates: A. the buccal periosteum overlying #27 B. a portion of the skin of the right cheek C. both a and b but not c D. the buccal mucous membranes mesial to #27

a portion of the skin of the right cheek

The needle positioning for the nasopalatine nerve block is: A. at a 90 degree angle to the incisive papilla B. exactly at the incisive papilla C. at a 45 degree angle to the incisive papilla D. both a and b

at a 45 degree angle to the incisive papilla

The site of deposition for the inferior alveolar nerve block is: A. lateral to the mental foramen B. in the pterygomandibular space C. in the mandibular canal D. medial to the incisive foramen

in the pterygomandibular space