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A prepared cavity is best protected from moisture by:

 # A prepared cavity is best protected from moisture by:
A. Cotton rolls 
B. Saliva ejector
C. Rubber dam 
D. Paper napkin


The correct answer is C. Rubber dam.





It is not possible to properly accomplish operative dentistry without control of mouth moisture. Moisture control refers to the exclusion of saliva, gingival sulcular fluid, and gingival bleeding from the operating field. It also involves preventing or limiting the spray from the handpiece and restorative debris from being swallowed or aspirated by the patient. he rubber dam, suction devices, and absorbents are variously effective in controlling moisture. Use of the rubber dam as an optimum means of gaining moisture control is recommended.

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