Ch 30 Care Of Dental Prosthesis Flashcards
Missing Teeth:
Patient with no teeth
1 or more teeth but less than of natural teeth
Fully edentulous
Partially edentulous
Edentulous Mouth:
Residual ridge
Which loss is greater mand or max
Remains after tooth removal. Undergoes resorption
Mand loss greater
Mucous membranes
Composition:
Mucosa
Submucosa
Which mucosa does the denture support depend on
Tension. Test shows what
Masticatory lining and specialized mucosa
CT, vessels, nerves, adipose tissue and glands(attached to bone)
Submucosa
Attached tissue over bony ridge and loose lining mucosa of vestibule
Consequences of not replacing missing teeth (4)
Migration of adjacent teeth
Migration of opposing teeth (super erupt)
Loss of occlusal vertical dimension (over closure)
Loss of vertical dimension may cause pooling of saliva which causes fungal growth and results in angular cheilitis
Fixed partial dentures aka
Composed of
Bridges
Retainer on abutment, Pontic, retainer
Types of Fixed Partial Dentures
Natural tooth supported
- cantilever : Pontic supported by 1 or more teeth at one end only
-resin retained: wing like extensions bonded with cement to etched enamel (min or no prep) aka Maryland bridge
Implant supported
Removable partial denture
Replaces what
Base and teeth made of
Replaces 1 or more but not all teeth
Base=plastic acrylic resin
Teeth = porcelain, plastic resin or metal
Types of complete dentures:
- Tissue supported
- Implant
- Overdenture
- Interim denture
5.immediate denture
6.denture for primary teeth
- Mucosa covered alveolar ridge on max or mandible
- Supported by one or more implants. Denture itself is not implantable
- Rests on one or more remaining natural teeth
- Aka provisional. Esthetics, stabilizing, function for limited time to be replaced
- Placed immediately after removal of teeth. Remade, etc after 6 mos
- Congenitally missing or extracted due to rampant Carie’s or trauma
Components of denture
- Base-rests mucosa
- Impression surface- inner surface not polished, lies directly on residual ridges and adjacent tissues. Lined temporary or perm soft silicone liner
- Polished surface -outer
- Occlusal surface- makes contact with opposing denture or natural teeth
- Teeth - plastic acrylic resin porcelain or polymethyl methacrylate or metal
Root supported Overdenture
Advantages
Teeth selected for this process
When pt clinical crowns are not restorable and root is Carie’s free and periodontally healthy
Less bone absorption
Better stability, retention
Improved chewing and Efficiency
Retain some senses bc pdl is present
Pt pschy acceptance
Canines
Implant supported denture
How many implants are necessary for maxilla Overdenture
Mandibular placed where
Advantages
More widely used than root supported
4 or more
Generally in position of canine
No risk for Carie’s
Less bone loss than complete
Improve stability than complete
Better chewing and quality of life
Obturator
- Made with what
- Purpose
- Clinical application
- Professional continuing care
Prosthesis designed to close congenital or acquired opening such as cleft of hard palate
- Resin base and retainer clasps for stability
- Loss of palate - cocaine, trauma, cancer of maxilla, Cleft palate
- Stay in place to prevent choking or aspiration of water/materials
Removed with rads
If pt is severe may sleep with it and so tissue may spontaneously bleed. Advise pts to use short periods during day for tissue rest if so - Minimum 3 visits a year. Will change over time
Denture marking for identification
Marker that can withstand cleaning methods and radiopaque if swallowed
Inclusion Methods for marking
More permanent, expensive and trained personal
ID Band-shallow indention
ID Strip- surface of impression when fabricated
Electromagnetic chip- cost
Laser etch - copper laser. Those with metal frameworks
Radio- tags not widely used $
Bar codes - printed on silk and incorporated into clear acrylic resin
Surface markers
Top coat is
How long do they last
Light ___ also
Also engraving tool or bud
Info to include
2 coats of fingernail acrylic applied after written
Last for 6 months
Light curved
Include: name and initials for temp
If name alone not enough include social
Possibly blood type, conditions, DOB, etc
