cavity prep question

[docsmiley]

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cavosurface angle for composite resin restoraions should be..
1.right angles
2.acute angles
3 obtuse angles..
i feel it should be obtuse angle in order to allow maximum surface area for etching...
answer key says right angles//
please explain ...

 

[docsmiley]

cavosurface angle for composite resin restoraions should be..
1.right angles
2.acute angles
3 obtuse angles..
i feel it should be obtuse angle in order to allow maximum surface area for etching...
answer key says right angles//
please explain ...

no replies???
do answer ...
one more question..
pfm alloys have a base of which metal???
1.tin
2.nickel.
3.gold
4.silver
5.platinum
6 palladium.
the answer is gold and its a 1978 paper..
any opinions???
do reply...

 

[buddingdentist]

Old Message

 

[docsmiley]

r u preparing for the practical paper for dental school entrance exam.i m to also goin to prepare for it.if interested we can plan a strategy of how to prepare it,coz i too have lot of queries like u do.

hi budding dentist..
are you referring to prep for bench test in california schools???
these questions are nbde part 2 ada released questions...am reading for part 2 ..and i do plan to apply to cali schools, but i have no clue about their clinical exam..i am looking for an assistant job where i can probably practice on extracted teeth..but not now...
how about you??where are you preparing for their test?