Which of the Following Angulations of the Needle MUST Be

question 15

Multiple Choice

Which of the following angulations of the needle MUST be followed during the administration of the posterior superior local anesthetic nerve block?

• A) Superiorly at 45 degrees and medially at 90 degrees to the occlusal plane
• B) Superiorly at 90 degrees and medially at 45 degrees to the occlusal plane
• C) Superiorly at 45 degrees and medially parallel to the occlusal plane
• D) Superiorly at 45 degrees and medially at 45 degrees to the occlusal plane

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Definitions:

Helium Gas

A colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling and melting points are the lowest among the elements.

Atm

A unit of pressure; standard atmosphere, approximately equal to the Earth's atmospheric pressure at sea level (101.325 kPa).

°C

A scale and unit of measurement for temperature where 0°C represents the freezing point of water and 100°C represents the boiling point of water at standard atmospheric pressure.

Atm

Standard atmosphere; a unit of pressure defined as 101,325 Pa and used as a reference for atmospheric pressure.