All instructional notes that appear in the Index and Tabular must be read and used as a guide when selecting codes.

Why is the etchant or conditioner applied on the occlusal surface 2 to 3 mm beyond the area to be sealed?

a. To prevent fracture of the sealant and possible microleakage. b. To ensure coverage of the tooth. c. To make room for buffing after the sealant process. d. Because there is shrinkage of the material after application.

The cell membrane is permeable allowing substances to pass into and out of the cell.?

Indicate whether the statement is true or false