Final

Question 1

5 pontic designs

Answer 1

saddle/ridge lap 
Modified ridge lap 
Hygienic
Conical
Ovate

Question 2

pontic that looks most like a tooth, but obliterates the facial, lingual and proximal embrasures, and is hard to clean and causes tissue inflammation. Should not be used

Answer 2

Saddle/Ridge lap

Question 3

pontic that possesses all convex surfaces, that does contact the ridge, but is cleansable. Most common pontic design in the appearance zone

Answer 3

Modified ridge lap

Question 4

Pontic that has no contact with edentulous ridge . Used in nonappearance zones. Can be all metal, and the occlusal gingival thickness should be no less than 3.0mm (

Answer 4

Hygienic

Question 5

Pontic with a rouned tip that is small in relation to the overall pontic size and is indicated on a thin mandibular ridge in nonappearance zones (

Answer 5

conical

Question 6

Round end design where esthetics are a concern. Tissue contacting edges is bluntly rounded and is set into a concavity on the ridge. Works well with a broad flat ridge

Answer 6

ovate

Question 7

3 Pontic materials

Answer 7

Metal ceramic
Cast metal
Resin processed to metal

Question 8

Should resin pontic be used near tissue

Answer 8

no, resin is porous

Question 9

Should the pontic be narrower or wider than natural tooth

Answer 9

slightly narrower

Question 10

What is the only tissue a pontic should contact

Answer 10

keratinized

Question 11

Can the pontic extend past the mucogingival junction

Answer 11

no, ulcer forms

Question 12

Ridge classification with loss of faciolingual ridge width, with normal apicocoronal height

Answer 12

class I

Question 13

ridge classification with loss of ridge height with normal width

Answer 13

class II

Question 14

ridge classification with loss of both ridge width and height

Answer 14

class III

Question 15

normal ridge with minimal deformity

Answer 15

class N

Question 16

most common ridge classification

Answer 16

class III

Question 17

2 types of pontic connectors

Answer 17

rigid (solder or cast connectors)
non rigid (precision or stress breakers

Question 18

Key in pontic with Keyway in retainer as a nonrigid connector best suited for relieving stress at midspan on long pointics or to align distal path of insertion on tilted abutment. The Key and keyway are not cemented together

Answer 18

dovetail

Question 19

Nonrigid connector that is placed entirely in the pontic useful on tilted abutments where the dovetail prep would mean very drastic box prep in the abutment. In layman’s term one half of the pontic ( e.g. the bottom half) is attached to a crown, while the other half of the pontic ( e.g. the top half)is attached to another crown. When the individual crowns are placed, their extensions form the entire pontic. The two pieces of pontic are not cemented together

Answer 19

split pontic

Question 20

Non rigid connector used when abutment teeth have disparate long axis, so they are prepared respective to their long axis, then the wing is made parallel to the long axis of the most mesail prep. The pontic is designed to accommodate the wing, and the pontic is attached to the mesial abutment

Answer 20

cross pin and wing

Question 21

Strongest type of rigid connector: cast vs soldered

Answer 21

Cast Connector > soldered connectors

Question 22

Strongest type of rigid connector: pre-porcelain vs post-porcelain

Answer 22

Pre-porcelain > post porcelain

Question 23

How do you index a FPD with duralay

Answer 23

cut gap b/w retainer and pontic, place duralay on top, invest, heat and flow solder in, must account for metal expansion

Question 24

What is an advantage of pre-porcelain soldering of PFM FPD

Answer 24

allows diagonal cut across a full pontic to have greater surface area than interproximal cut. Done when a cast FPD had to be made in 2 pieces

Question 25

When would post porcelain soldering be indicated on a PFM FPD

Answer 25

if teeth have moved between final impression and restoration