Prostho 28-36

Question 1

28. Jacket crown

Answer 1

a fixed dental prosthesis that restores a clinical crown covering the prepared surfaces without a supporting metal framework.
It can be prepared in resin, acrylic, ceramic.

Question 2

29. Laminate veneer

Answer 2

a thin bonded ceramic or acrylic restoration that restores

the facial surface and part of the proximal surfaces of teeth requiring esthetic restoration.

Question 3

30. Post-retained core / post-and-core / dowel

Answer 3

is a tool,
fitted into the prepared root canal of the tooth (after root canal filling),
with the aim to build up the missing coronal part of the tooth in order to
provide retention and support for the artificial crown.

We use it when there is not enough tooth structure to anchor a crown or a bridge.
It provides a base for later restoration.

Question 4

31. Cast post and core (custom made post-and-core)

Answer 4

is a cast metal tool,
fitted into the prepared root canal of the tooth (after root canal filling),
with the aim to build up the missing coronal part of the tooth in order to provide retention and support for the artificial crown.

We use it when there is not enough tooth structure to anchor a crown or a bridge.
It provides a base for later restoration.

Question 5

32. Root post

Answer 5

a one-piece foundation restoration for an endodontically treated tooth
that comprises a post within the root canal and
a core can be produced together with the post or cast on it,
or build up with composite or GIC.

We use it when there is not enough tooth structure to anchor a crown or a bridge.
It provides a base for later restoration.

Question 6

33. Prosthetic value of the teeth

Answer 6

means how appropriate is a tooth for prosthetic purpose.

Grade I (primary) abutments: 	upper central incisors, upper and lower canines and molars, 
Grade II (secondary) abutments: upper and lower premolars
Grade III (tertiary) abutments: lower incisors, upper lateral incisors

Wisdom teeth can’t be graded

Question 7

34. Fixed partial dental prosthesis / bridge

Answer 7

Fixed prosthesis, which is prepared for the replacement of one or more teeth,
it is anchored to the natural teeth (or dental implants) adjacent to the missing teeth.

It transmits the load to the jaw similar to natural teeth (periodontium) and
does not occupy more place than the missing teeth.
Generally, it cannot be removed without the damage of the anchors (crowns).

Question 8

35. Retainer of the bridge

Answer 8

That part of a bridge which connects the retainer and the pontic,
that way it fixes the bridge to the abutment.
It transfers the masticatory force to the abutment, and protects the abutment.

Question 9

36. Abutment of a bridge

Answer 9

natural tooth or root built up with a post and core, sometimes dental implant,
on which the bridge is retained and supported.
Abutments are the part of the bridge used to support the replacement of the missing teeth (pontics).