Complete information related to the mixing of composite resins.
a. In the two-paste system,_____________parts of the paste are mixed to a
b. Mixing is done within______ to ______ seconds.
__________________ spatulation will decrease the strength of the mixture.
Describe why a double-ended, nonmetal spatula is used to mix composite resin.
a. To avoid cross-contamination between jars of paste, each end of the spatula
is clearly labeled ___________ or ________________.
b. Use of a metal spatula will result in ____________________ of the material.
Describe the acid etch technique.
a. The use of this technique improves the _________ of the composite resin to
the cavity wall, thus strengthening it.
b. _____ to ____ percent phosphoric acid is applied to the margins of the cavity.
The acid is left on the cut tooth surface for ______ seconds and then flushed
with water for ______ seconds.
d. Etched tooth structure will have a __________________ appearance.