The part of a FPD that is cemented to a tooth is called the:
retainer; the crown that goes on top of the abutment
The part of a FPD that replaces missing tooth structure:
Pontic
The tooth to which a FPD is attached is called an:
abutment
If one FPD is 3x longer than another FPD, and all other factors are equal, how much more will the 1st FPD flex?
27x
In general, a FPD can be considered for replacing edentulous spaces of ____ or less in the posterior, and spaces of _____ or less in the anterior:
2, 4
When the facial-lingual dimension of an FPD framework is diminished on the facial to allow for better esthetics, what should the lingual design of the metal framework be?
scalloped/ trestle
When the occlusal-gingival dimension of a pontic is not limited, what is the material of choice to lie occlusal to the edentulous ridge?
porcelain (vs gold, acrylic, or porcelain & gold)
What investment material is used to cast the metal framework of a fixed partial denture?
When pouring up a transfer cast of a FPD, the part of the cast representing the abutments should be made out of:
Resin
(T/F) While the optimum crown: root ratio used to support a FPD is 2:3, the minimum ratio that is acceptable is 2:1:
F, should be 1:1
Teeth #3 & 5 are missing, and the remaining teeth in the arch are adequate to support a FPD. Teeth #2, 4, & 6 will be used as abutments, bc the pt does not want implants; what is #4 called?
a pier abutment
(T/F) When a FPD is made for a pt after the teeth have been prepared, it is suggested that the temporary be made in two separate pieces to better fit the preparations:
F; the temporary should be in one piece, attached to both abutment teeth, and the pontic shape should be the same as that which you plan to do in the final restoration
(T/F) When mounting casts of a preparation onto a non-adjustable articulator using a thick interocclusal record, the crown fabricated on this set of casts will occlude in a different position on the articulator, than in the mouth:
T; bc of the different axis of rotation
The purpose of a facebow registration is to:
mount the maxillary cast to the articulator
When mounting casts to fabricate restorations on a small portion of the mouth, the bite registration should be taken when the teeth are in:
maximal intercuspation
When doing a shoulder finish line for a PFM, the shoulder should form a 90 degree angle to the:
outer facial contour of the tooth
(T/F) When making a provisional restoration for a FPD, for adequate strength, the gingival embrasure of the pontic should be thick in an occlusal-gingival direction, and it should be tight against the papilla, without any space:
F; this is not true for 3 different reasons
Whenever it is necessary to mount a full arch cast using an acrylic baseplate & wax rims, which casts should be used to make the acrylic baseplate?
the casts that will be mounted
If a highly filled PVS material is used to make a bite registration, and the material has begun to set before the teeth are closed together, what will the effect be?
the casts will be mounted w an open bite
The primary reason to make a custom cast dowel core is
: to retain the final restoration (vs reinforce remaining tooth structure, distribute occlusal forces, reinforce the root)
In making a custom cast dowel care, after initial removal of gutta percha using a warm instrument, what is used to remove additional gutta percha and shape the canal?
the Peeso reamer; the Parapost drill is used after the Peeso reamer, bc it will cut in whatever reason it is pointed
(T/F) While most posterior endodontically treated teeth need some kind of crown to safely restore them, many anterior endodontically treated teeth can be safely treated w a direct restoration:
T
Each of the following is an advantage of a custom cast dowel core over a preformed post & core when doing a buildup for a max central incisor, except:
the dowel core buildup can be completed in one visit; it takes two visits
When placing a core & post on an endodontically-treated tooth, the minimum amount of gutta percha that should be left in order to maintain an apical seal & not compromise the long-term success of the endodontic therapy is:
5mm
In mandibular molars, the primary canal used to retain a fabricated post is the:
distal canal
(T/F) When building up a broken down endodontically-treated tooth w a prefabricated post, the majority of the gutta percha should be removed w a Parapost drill:
F
After successful endodontic treatment of a molar w a previous MOD restoration (that has been removed) needs restoration w an indirect cast restoration, and it is unclear what type of blockout is needed, what should be done?
prepare occlusal and axial parts of prep, then evaluate
(T/F) After taking a digital impression of a prep, the computer automatically realizes what tooth number has been scanned:
F; you must tell it
(T/F) When doing a digital impression & marking the margins, it is not necessary to have distinct finish lines on the prep:
F
Discolorations can be classified as either extrinsic or intrinsic. What does the text recommend to remove extrinsic stains?
Most bleaching techniques use some form or derivative of:
hydrogen peroxide
(T/F) Teeth exhibiting yellow/ orange intrinsic discoloration seem to respond best to vital bleaching, while teeth exhibiting bluish/ grayish intrinsic discoloration respond much less favorably to vital bleaching:
