Terminology & Classification Flashcards
What is a prosthesis?
Is any artificial replacement of a missing body part.
What is Prosthodontics?
- It’s discipline of dentistry regarding restoration of oral func, comfort,
appearance and health - by restoring natural teeth + replacing missing teeth
- and contiguous oral and maxillofacial tissue w/ artificial substitutes.
What is a crown?
- is an artificial replacement that restores missing tooth struct by surrounding most or all of the remaining struct. w/ a material such as:
- cast metal
- porcelain
- combination materials
Eg. metal & porcelain. - It is intended to reproduce both the form and function of the tooth + sometimes to restore or enhance appearance.
Types of crowns?
- complete veneer crowns
- partial veneer crowns
What does the complete veneer crowns restore?
restores all the surfaces of the clinical crown
What are the restoration materials that can be used in a complete veneer crown?
- All metal Eg. metal cast crown
- All porcelain (ceramic) Eg. Porcelain jacket crown
- A metal-ceramic combination Eg veneer
- A metal with processed resin Eg veneered crown
What does a partial veneer crown cover?
Restores only a portion of the clinical crown
Types of partial veneer crowns?
- three-quarter crowns
- reverse three-quarter crowns
- seven eighths crowns
- one half (1/2) crown veneers
- pinledge retainer
- laminates
- resin bonded restoration
- inlay retainer
- onlay retainer
What does Three quarter crown restore?
- occ surface
- all other surfaces except facial surface
What does the Reverse Three-Quarter Crowns restore?
Restore all surface except the lingual surface
What does Seven-Eighths Crowns restore?
Are extensions of the three-quarter crown to include a major portion
of the facial surface
EXCEPT MB cusp of max molars
What does one half (1/2) crown veneers restore?
Restores:
Occ surface
M surface
Portions of facial and lingual surfaces
All surfaces except D
Info on Pinledge Retainer?
- Restoration on ant three-quarter crown
- to obtain primary retention + resistance from long parallel pins in the lingual or palatal surface of the clinical crown
Pins and ledges of pinledge retainer?
3 pins and 2 ledges
Laminates✨
- R veneer restorations that restore the facial/labial surface
- fabricated from resin or dental porcelain + bond to etched enamel w/ composite resin luting agent.
Resin-bonded Restorations🫧
- r cast metal partial veneers that bond to etched enamel.
- r used as retainers for a fixed partial dentures (FPD).
- commonly referred to as a Maryland bridge.
Inlay Retainer 🦷
- is an intracoronal cast restoration
- that restores proximal + occlusal surfaces
- does not protect or cover the cusps
Onlay Retainer 💉
Deals w/ cusp damage on occ surface
Components of post crown system
- post
- core
- crown or extra coronal restoration
define bridge:
- It is a fixed dental prosthesis
- which replaces + restores function + esthetic of one or more missing natural teeth
- and can’t be removed from the mouth by the patient.
- It is primarily supported by natural teeth or root.
list the components of a bridge:
- Abutment Tooth
- Retainer (Attachment), (Abutment Piece)
- Pontic
- Connector Joint
Abutment Tooth def:
Is the natural tooth which supports and retains the bridge at one or both terminals.
define Pier (Intermediate Abutment tooth)
Is an isolated abutment tooth where the anterior and posterior adjacent teeth to it are missing.
Define Retainer (Attachment), (Abutment Piece):
Is a restoration rebuilding the prepared tooth and by means of which the pontics are anchored to the abutment teeth.
Define Pontic
(Dummy) is that part of the bridge which acts as the actual substitute for the lost tooth and is suspended between the retainers replacing the lost natural tooth functionally and esthetically.
Define Connector Joint:
Is that part of the bridge uniting the pontic (s) with retainer (s) joining the component parts of the bridge.
types of bridges according to retention:
- simple bridge
- compound bridge
types of bridges acc to site:
- complex bridge
- anterior bridge
- posterior bridge
types of bridges acc to site
temporary bridge
list the simple bridges:
- Fixed Fixed Bridge
- Fixed Supported Bridge
- Cantilever Bridge
- Spring Cantilever Bridge
other names for the fixed fixed bridge?
Fixed Bridge
Rigid Bridge
Fixed Rigid Bridge
Stationary-Fixed Bridge
define the fixed fixed bridge
- Is a bridge where the abutment pieces and pontics are all soldered together
- the bridge is cemented at both ends to the abutment teeth.
other names for the fixed supported bridge
Fixed-Movable
Limited Stationary
Broken Stress Bridge
Semi- Rigid
Fixed-Semirigid Bridge
define the foxed supported bridge
- Is a bridge which is not actually joined to one of the terminal abutment teeth
- but Is connected to it by means of a non-rigid connector
- allowing some individual movement of the abutment tooth.
define Cantilever Bridge
- is a bridge where the pontic is fixed to and derives its support from one or double retainers at one end only while the other end is supported.
define Spring Cantilever Bridge:
- 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 spaces.
define compound bridge
Is a combination of bridges composed of two or more of the simple types.
define complex bridge
Is a bridge that extends at one of its terminals beyond the canine.
list the types of ant bridges
a. Unilateral Bridge:
Is the two or three teeth anterior bridge which does not cross the median line.
b. Bilateral Bridge:
Is the three or four teeth bridge which involves teeth on both sides of the median line
Temporary Bridge:
- Is a bridge made and used temporarily for the protection of the prepared teeth
- and maintenance of the space till completion and cementation of the bridge.
In Full Coverage crown: Retained mainly by: Encircling the Preparation.
1) Metallic:
a. One Piece
b. Two Piece
2) Combined:
a. Veneered with acrylic or porcelain
b. Full Veneered with acrylic or porcelain.
3) Non-metallic:
a. Porcelain Jacket Crown.
b. Acrylic Jacket Crown
In Full Coverage crown: Retained mainly by: Post in the root canal:
1) Retained by:
a. Post only.
b. Post and collar.
2) Posterior posts:
a. Attached.
b. Detached.
3) Material:
a. All-metallic.
b. Combined.
c. Retained by both Methods: Post - Jacket Crown.
Partial coverage: Retained mainly by:
1) Grooves:
a. Three Quarter Crown 3/4.
b. Half Veneer Crown 1/2.
c. Mac Boyle Crown “Retainer”
d. Seven eights Crowns 7/8
2) Pins: Pin-Ledge Retainer.
3) Enclasping the preparation: Reverse Retention Retainer.
4) Combined means of retention: Modified types including both grooves and pins.
list the bridges according to retention:
A. Simple Bridge: .
a. Fixed-Fixed.
b. Fixed-Supported
c. Cantilever.
d. Spring Cantilever.
e. Removable.
B. Compound Bridge:
Employing more than one of the above types.
list the bridges according to material:
A. Metallic:
a. Precious alloy: Au, Pt.
b. Semi-Precious Alloy: Ag, Pd.
c. Non-precious Alloy: Cr. Ni. Co. Cu. Ti. Fe.
B. Combined:
a. metallic with labial or buccal veneers. “Porcelain or acrylic
b. Metallic with full porcelain veneer.
c. Non Metallic with metal reinforcement or framework.
C. Non-Metallic: a. All-Acrylic. b. All-Ceramic.
list the bridges according to site:
a.Anterior
1. unilateral
2. Bilateral
b. Posterior
c. complex : anterior and posterior segments involving the canine eminence.
