Prostho - Finals Flashcards
A suspended member of a FPD, replacing the lost natural tooth and its
function.
Pontic
Pontin design is dictated by
Function
Esthetics
Ease of cleaning
Functions of Pontics
- Restore aesthetics
- Mastication
- Speech restoration
- Maintain occlusal harmony
- Maintain oral hygiene and gingival health
REQUIREMENTS OF A PONTIC
- Restore function of the tooth it replaces.
- Meet demand of esthetic and comfort.
- Biologically acceptable to tissue.
- Sanitation
- Prevent tissue inflammation.
Types of Pontic Design: According to material
- Porcelain
- Metal (for posterior teeth)
- Metal and porcelain facing
- Acrylic temporary (wear, bad odor, porous, easily discolored)
- Metal and acrylic facing
Types of Pontic Design: According to support
Fixed-fixed pontic
- Fixed-supported pontic
- Free end pontic
Looks most like a tooth, replacing all the contours of the missing tooth.
Saddle type
Fills the embrasure and overlaps the ridge with a large concave contact.
Saddle type
The shape is cleanable but triangular spaces around the tissue contact have
a tendency to collect debris.
Conical`
Do not have any contact with tissue.
Hygienic
restore function and stabilize adjacent teeth.
Hygienic
Use on non-appearance zone.
- May be made entirely of metal.
Hygienic
Thickness of hygienic pontic design should’t be less than
3 mm
Give the appearance of being a tooth but all surface are convex for ease of
cleaning.
Ridge lap
Contact starts at the crest of the ridge, whereby the lingual has a slight
deflective contour in order to prevent food impaction and minimize plaque
accumulation.
Ridge lap
