Dentist Assistant - Ch.50&51 Exam
Questions With Correct Answers New
Update.
A patient presents to your office with an existing occlusal amalgam restoration and a
fractured distolingual cusp. Which of the following restorations would be used as an
alternative to a larger amalgam restoration? - Answer -✔✔Onlay
Which of the following is not a technique used to displace the gingiva prior to taking an
impression for a crown or bridge? - Answer -✔✔Lentulo spiral
Which of the following statements about retraction cord is not correct? - Answer -
✔✔Thin retraction cord resorbs in the sulcus and need not be removed.
Which of the following statements about the image is correct? - Answer -✔✔The tooth
has been prepared for an MODB onlay
The impressions and bite registration should be disinfected before they are sent to the
lab so as not to expose lab personnel to pathogens. - Answer -✔✔True
What is the term given to the junction between prepared and unprepared tooth
structure? - Answer -✔✔Cavosurface Margin
Mr. Hackney has been treatment planned for a bridge from tooth # 9 to #14 to replace
two teeth that were recently extracted (#10 & #12). Which of the following pairs of teeth
is considered an abutment? - Answer -✔✔#13 & #14
What is the term given to a tooth that supports a pontic? - Answer -✔✔Abutment
In your state, a dental assistant is legally permitted to place retraction cord under the
supervision of a licensed dentist. Which of the following would not impact how/whether
you proceed with cord placement on a patient? - Answer -✔✔The patient states that he
is not concerned if the crown margin is visible
The use of posts in vital teeth provides additional support for the crown and ensures
that the crown will remain attached to the tooth. - Answer -✔✔False
You've completed assisting Dr. Smith with a final impression for a crown on tooth #3.
Which of the following is a very important step to remember prior to proceeding with
fabricating the provisional crown? - Answer -✔✔Remove the thin retraction cord from
the sulcus
, A patient is missing teeth #3 and #5 and is scheduled to have a bridge from tooth #2 to
tooth #6. Which of the following teeth are the abutments? - Answer -✔✔#2, #4, and #6
A patient is to receive a fixed bridge to replace missing tooth #3. Which of the following
statements about the procedure is incorrect? - Answer -✔✔The abutment teeth and
pontic require gingival retraction.
Sue White's wedding is this weekend and she severely fractured tooth #5 at her
bachelorette party two days prior to the big event. She is concerned that the gap will
show in pictures when she smiles and wants a permanent crown fabricated before the
wedding. Which of the following will satisfy her desire? - Answer -✔✔A CAD/CAM-
produced crown
All-ceramic crowns provide superior esthetics but poor strength when compared to PFM
crowns. - Answer -✔✔True
Which of the following techniques can be used in the case of a missing tooth? - Answer
-✔✔Implant
Which of the following statements about obtaining an impression for fixed
prosthodontics is not correct? - Answer -✔✔Heavy-bodied impression material is
syringed around the prepared tooth.
Which of the following steps are performed before cementation of the new crown?
Select all that apply. - Answer -✔✔Check the shade for accuracy.
Check the contacts with floss
Check the margins with an explorer.
Check the occlusion with articulating paper.
Why was gutta percha removed from Mr DeLuca's tooth #14 after the root canal was
complete? - Answer -✔✔To make room for a post to be fitted
A patient is missing teeth #14 and #12 and is scheduled to have a bridge from tooth #11
to tooth #15. Which of the following teeth are the pontics? - Answer -✔✔#12 and #14
only
What type of prosthesis might be recommended for a patient with healthy anterior teeth
that have a deep intrinsic stain that cannot be removed with whitening procedures? -
Answer -✔✔Laminate veneers
When porcelain is to be used for a crown, it is advisable to obtain a shade before tooth
preparation. - Answer -✔✔True
Questions With Correct Answers New
Update.
A patient presents to your office with an existing occlusal amalgam restoration and a
fractured distolingual cusp. Which of the following restorations would be used as an
alternative to a larger amalgam restoration? - Answer -✔✔Onlay
Which of the following is not a technique used to displace the gingiva prior to taking an
impression for a crown or bridge? - Answer -✔✔Lentulo spiral
Which of the following statements about retraction cord is not correct? - Answer -
✔✔Thin retraction cord resorbs in the sulcus and need not be removed.
Which of the following statements about the image is correct? - Answer -✔✔The tooth
has been prepared for an MODB onlay
The impressions and bite registration should be disinfected before they are sent to the
lab so as not to expose lab personnel to pathogens. - Answer -✔✔True
What is the term given to the junction between prepared and unprepared tooth
structure? - Answer -✔✔Cavosurface Margin
Mr. Hackney has been treatment planned for a bridge from tooth # 9 to #14 to replace
two teeth that were recently extracted (#10 & #12). Which of the following pairs of teeth
is considered an abutment? - Answer -✔✔#13 & #14
What is the term given to a tooth that supports a pontic? - Answer -✔✔Abutment
In your state, a dental assistant is legally permitted to place retraction cord under the
supervision of a licensed dentist. Which of the following would not impact how/whether
you proceed with cord placement on a patient? - Answer -✔✔The patient states that he
is not concerned if the crown margin is visible
The use of posts in vital teeth provides additional support for the crown and ensures
that the crown will remain attached to the tooth. - Answer -✔✔False
You've completed assisting Dr. Smith with a final impression for a crown on tooth #3.
Which of the following is a very important step to remember prior to proceeding with
fabricating the provisional crown? - Answer -✔✔Remove the thin retraction cord from
the sulcus
, A patient is missing teeth #3 and #5 and is scheduled to have a bridge from tooth #2 to
tooth #6. Which of the following teeth are the abutments? - Answer -✔✔#2, #4, and #6
A patient is to receive a fixed bridge to replace missing tooth #3. Which of the following
statements about the procedure is incorrect? - Answer -✔✔The abutment teeth and
pontic require gingival retraction.
Sue White's wedding is this weekend and she severely fractured tooth #5 at her
bachelorette party two days prior to the big event. She is concerned that the gap will
show in pictures when she smiles and wants a permanent crown fabricated before the
wedding. Which of the following will satisfy her desire? - Answer -✔✔A CAD/CAM-
produced crown
All-ceramic crowns provide superior esthetics but poor strength when compared to PFM
crowns. - Answer -✔✔True
Which of the following techniques can be used in the case of a missing tooth? - Answer
-✔✔Implant
Which of the following statements about obtaining an impression for fixed
prosthodontics is not correct? - Answer -✔✔Heavy-bodied impression material is
syringed around the prepared tooth.
Which of the following steps are performed before cementation of the new crown?
Select all that apply. - Answer -✔✔Check the shade for accuracy.
Check the contacts with floss
Check the margins with an explorer.
Check the occlusion with articulating paper.
Why was gutta percha removed from Mr DeLuca's tooth #14 after the root canal was
complete? - Answer -✔✔To make room for a post to be fitted
A patient is missing teeth #14 and #12 and is scheduled to have a bridge from tooth #11
to tooth #15. Which of the following teeth are the pontics? - Answer -✔✔#12 and #14
only
What type of prosthesis might be recommended for a patient with healthy anterior teeth
that have a deep intrinsic stain that cannot be removed with whitening procedures? -
Answer -✔✔Laminate veneers
When porcelain is to be used for a crown, it is advisable to obtain a shade before tooth
preparation. - Answer -✔✔True
