What Is the Round Radiolucency Often Observed near the Apices

question 34

Essay

What is the round radiolucency often observed near the apices of the mandibular premolars called?

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Definitions:

Sedimentary Cycle

Biochemical cycle such as the phosphorus cycle, in which the atmosphere plays little role and rocks are the major reservoir.

Carbon Cycle

Biogeochemical cycle in which carbon is exchanged between oceans, soils, atmosphere, and living organisms.

Phosphorus Cycle

Movement of phosphorus among Earth’s rocks and waters, and into and out of food webs.

Nitrogen Cycle

Movement of nitrogen among the atmosphere, soil, and water, and into and out of food webs.