Terminology and classification

Question 1

Define fixed

Answer 1

treatment involves the replacement and restoration of teeth by
artificial substitutes that are not readily removable from the mouth_ Its focus is to restore
function, esthetics, and comfort.

Question 2

Define crown

Answer 2

cemented extra coronal restoration that covers, or veneers, the outer
surface of the clinical crown.

Question 3

Complete veneer crowns….

Partial veneer crowns……

Answer 3

Restore all surfaces of the clinical crown.

Restore only a portion of the clinical crown

Question 4

Classify crown (Partial coverage )

Answer 4

a-Three-quarter crown ¾
b-Reverse three-quarter crown
c-seven-eight crown 7/8
d-pin-ledge crown
e-proximal-half crown

Question 5

Define a bridge (FPD) and list components

Answer 5

a prosthetic appliance, permanently attached
to remaining teeth, which replaces one or more missing teeth .

Components of bridge:
1-pontic : part of bridge replace the missing tooth or teeth
2-retainer :part of bridge cemented over the prepared teeth to fix the bridge
3-connector:part of bridge the uniting the pontic with retainer.

Question 6

Classify bridges, according to retention

Answer 6

A-Tooth supported fixed partial denture (conventional bridge) :

1-simple bridge: a-fixed-fixed bridge
b-fixed-movable bridge
c-cantilever bridge
d-spring bridge
2-compound bridge.

B-Implant supported fixed partial denture.

Question 7

Three-quarter crowns

Answer 7

Restore the occlusal and three of the four axial surface Not including the facial surface.

Question 8

Reverse three-quarter crown

Answer 8

Restore all surface except the lingual surface.

Question 9

Seven-eight crown

Answer 9

Are extension of the three-quarter crown to include the facial
Surface.
The preparation is same As ¾ crown in addition to the distal side of the facial Surface included in the preparation

Question 10

Proximal-half crown

Answer 10

Restore the occlusal and mesial surface, as well as portions of the facial and lingual surface.

Question 11

Pinledge retainer

Answer 11

modification of an anterior three-quarter crown Preparation to obtain primary retention and resistance from long parallel pins in
The lingual or palatal surfaces of the clinical crown.

Question 12

Laminates

Answer 12

veneer restoration that restore the facial surface of a tooth for
Esthetic purpose.
They are fabricated from resin or porcelain , they bond to etched Enamel with composite resin luting agent.

Question 13

Resin-Bonded restorations

Answer 13

cast metal partial veneers that are bonded to etched enamel.
Resin-bonded restorations are used most often as retainers for a
fixed partial dentures also called (Adhesive bridge).

Question 14

Inlay Retainer

Answer 14

intracoronal cast restoration that restores the proximal and occlusal surfaces but does not protect or cover the cusp entirely.

Question 15

Onlays Retainer

Answer 15

modification of the inlay with cusp overlays on the occlusal Surface to protect the integrity of the remaining tooth structure.

Question 16

Radicular Retained restorations

Answer 16

Radicular retained restorations consist of a post or dowel with an attached core that obtains its retention and
resistance to displacement from the prepared root portion of endodontically treated tooth .
while the root preparation retains the post. The core establish
Retention and resistance for a complete crown.

Question 17

Temporary crown

Answer 17

crown made and used temporarily for protection of the Prepared tooth till the crown or bridge is completed and ready for cementation.

Question 18

Fixed-fixed bridge

Answer 18

Is a bridge where the abutment and the pontic are soldered Together and the bridge is cemented at both ends to the abutment teeth.

Question 19

Fixed-movable bridge

Answer 19

bridge where one retainer is soldered to pontic and The other retainer consist of two parts (key and key way) one is attached to pontic
and the other is attached to retainer that allow some movement.

Question 20

Cantilever Bridge

Answer 20

(Free end bridge) is a bridge where the pontic is fixed to and
derives is support from one or double retainers at one end only while the other End is unsupported.

Question 21

Spring cantilever Bridge

Answer 21

Is a cantilever bridge where the pontic is at the end of slightly resilient curved arm deriving its support from an abutment remote from The edentulous space.

Question 22

Compound Bridge

Answer 22

combination type bridge composed of two or more of the Simple types.

Question 23

Complex Bridge

Answer 23

bridge that extends at one of its terminals beyond the canine.