EFDA \|OHIO \|board \|prep \|Hottel \|book \|Ch3 \|
isolation \|– \|questions \|with \|answers
cotton \|rolls \|may \|be \|placed \|here \|for \|retraction \|and \|dryness \|during \|
a \|short \|procedure \|- \|CORRECT \|ANSWERS \|✔✔vestibule \|or \|floor \|of \|
the \|mouth \|adjacent \|to \|the \|operating \|site
which \|of \|the \|following \|is \|not \|a \|disadvantage \|of \|using \|cotton \|rolls \|
for \|isolation:
a. \|they \|become \|saturated \|and \|must \|be \|changed \|frequently
b. \|during \|changing \|procedures, \|the \|risk \|of \|contaminating \|the \|field \|
with \|moisture \|in \|increased
c. \|ease \|of \|speed \|of \|application
d. \|cotton \|rolls \|offer \|limited \|retraction \|of \|the \|lips, \|cheek, \|and \|
tongue \|and \|no \|gingival \|retraction
e. \|there \|is \|no \|protection \|against \|the \|patient \|aspirating \|foreign \|
materials \|or \|chemicals \|- \|CORRECT \|ANSWERS \|✔✔ease \|of \|speed \|of \|
application
name \|6 \|advantages \|of \|using \|the \|rubber \|dam \|- \|CORRECT \|ANSWERS \|
✔✔1- \|dry \|clean \|and \|visible \|field \|of \|operation
2- \|protection \|of \|the \|patient \|and \|operator
3- \|economic \|factors
