What causes concrete to spall when exposed to freezing or fire conditions?
A. The rapid expansions/contraction of the concrete
B. The presence of excess moisture in the concrete
C. The presence of excessive air pockets in the concrete
D. The improper amount of aggregate used in the concrete.
Answer: B. The presence of excess moisture in the concrete
Health Professions
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Which of the following periodontal conditions is best treated with gingivectomy/gingivoplasty?
A) One-wall bony defect B) 6 mm gingival pocket C) 8 mm infrabony pocket D) Class II furcation defect
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