Final answer:
Mixed zinc oxide-eugenol is rolled into a small ball to adapt the material into place, protect it from contamination, and make material placement easier.
Explanation:
Adapts material into place: The reason mixed zinc oxide-eugenol is rolled into a small ball before placement is to ensure that it can be molded and adapted effectively into the cavity preparation.
Protects mix from contamination: By forming a small ball, the mixed zinc oxide-eugenol is safeguarded from potential contaminants that could affect its properties.
Makes material placement easier: Rolling it into a ball facilitates the placement process and provides better control during application.
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