A Dental Hygiene Student Chooses an Instrument with a Simple

question 6

Multiple Choice

A dental hygiene student chooses an instrument with a simple shank to remove deposits in a 5-mm pocket on tooth #3.Which statement best describes why this instrument choice is inappropriate?

• A) Correct adaption of the working end is not possible to reach the base of the pocket.
• B) Most simple shanks are too rigid to adapt in deep pockets around posterior teeth.
• C) Simple shanks are too short to reach the base of the pocket around posterior teeth.
• D) Simple shanks have too many bends to reach the base of the pocket around posterior teeth.

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Definitions:

Trophoblast

The outer layer of cells that develops in the germinal period. These cells provide nutrition and support for the embryo.

Germinal Period

The period of prenatal development that takes place in the first two weeks after conception. It includes the creation of the zygote, continued cell division, and the attachment of the zygote to the uterine wall.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the skin and nervous system.

Prenatal Development

The progression of maturation and evolution inside the uterus from the moment of conception until the time of delivery.