Components of Fixed Partial Denture

An overview of FPD components

1. COMPONENTS OF FIXED PARTIAL
DENTURE
DR. AAMIR GODIL
DEPARTMENT OF PROSTHODONTICS
M.A.R.D.C.

2. FIXED DENTAL PROSTHESIS/ FDP
FIXED PARTIAL DENTURE/ FPD
Missing tooth
indicated for
FDP
Fixed Dental Prosthesis

3. PARTS OF FDP
an artificial tooth on a fixed partial denture
that replaces a missing natural tooth, restores
its function, and usually restores the space
previously occupied by the clinical crown
PONTIC
any type of device used for the stabilization or
retention of a prosthesis
RETAINER
in fixed prosthodontics, the portion of a fixed
partial denture that unites the retainer(s) and
pontic(s);
CONNECTOR
Glossary of Prosthodontic Terms
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4. RIDGE DEFECTS
Siebert’s Classification:
•Class I defects: faciolingual
loss of tissue width with
normal ridge height
•Class II defects: loss of ridge
height with normal ridge
width
•Class III defects: a
combination of loss in both
dimensions
No defect Class I
Class II Class III

5. PONTIC
IN FIXED PARTIAL DENTURE

6. CLASSIFICATION OF PONTICS
I) According to Rosenstiel (Based on mucosal contact):
Mucosal Contact
◦Ridge-lap
◦Modified ridge-lap
◦Ovate
◦Conical
No Mucosal Contact
◦Sanitary (hygienic)
◦Modified sanitary (hygienic)

7. CLASSIFICATION OF PONTICS
II) Based on type of material used:
•Metal and porcelain-veneered pontic
•Metal and resin veneered pontic
•All metal pontic
•All ceramic pontic
III) Based on method of fabrication:
◦Custom made pontic
◦Prefabricated pontic
◦-Trupontic
◦-Interchangeable facing
◦-Pin-facing pontic
◦-Modified pin-facing pontic
◦-Reverse pin-facing pontic
◦Prefabricated custom modified pontic

8. RIDGE LAP PONTIC
•Overlaps the residual ridge buccolingually, simulating the
contours and emergence profile of the missing tooth on both
sides of the residual ridge.
•Avoided because the concave gingival surface of the ponticis
not accessible to cleaning with dental floss, which leads to
plaque accumulation
•This design deficiency has been shown to result in tissue
inflammation
Saddle Pontic

9. MODIFIED RIDGE LAP PONTIC
MODIFIED RIDGE LAP PONTIC
Recommended locationHigh estheticrequirement (i.e., anterior teeth
and premolars, some maxillary molars)
Advantages Good esthetics
Disadvantages Moderately easy to clean
Indications Most areas with estheticconcern
Contraindication Where minimal estheticconcern exists
Materials Metal-ceramic/ All resin/ All ceramic
Saddle Pontic

10. OVATE PONTIC
OVATE PONTIC
Recommended locationVery high estheticrequirement
Maxillary incisors, canines, and premolars
Advantages Superior esthetics
Negligible food entrapment
Ease of cleaning
Disadvantages Necessitates surgical preparation
Not for residual ridge defects
Indications Desire for optimal esthetics
High smile line
Contraindication Patient’s unwillingness to undergo surgery
Residual ridge defects
Materials Metal-ceramic/ All resin/ All ceramic

11. MODIFIED OVATE PONTIC
•Liudescribed a modified version of the ovate ponticthat expands the
clinical indications for the ovate pontic.
•The modified ovate ponticpossesses an ovate form with the apex
positioned more facially on the residual ridge, rather than at the crest
of the ridge.
•This alteration allows the use of the ponticin clinical scenarios in
which horizontal ridge width is not sufficient for a conventional ovate
pontic.
•Cleansing of this ponticis also reported to be easiest of all pontic
types.
Ovate
Modified
Ovate

12. CONICAL PONTIC
CONICAL PONTIC
Recommended locationMolars without estheticrequirements
Advantages Good access for oral hygiene
Disadvantages Poor esthetics
Indications Posterior areas where estheticsis of minimal
concern
Contraindication Poor oral hygiene
Materials Metal-ceramic/ All resin/ All ceramic
Bullet Pontic
Egg shaped/ heart
shaped Pontic

13. SANITARY PONTIC
SANITARY PONTIC
Recommended
location
Posterior mandible
Advantages Good access for oral hygiene
Disadvantages Poor esthetics
Indications Impaired oral hygiene
Non estheticzones
ContraindicationWhere estheticsis important
Minimal vertical dimension
Materials All metal
Hygienic PonticFish-belly Pontic

14. MODIFIED SANITARY PONTIC
Hygienic Pontic
•Its gingival portion is shaped like an archway between the retainers.
•This geometry allows for increased connector size and a decrease in the stress concentrated in the ponticand
connectors.
•It is also less susceptible to tissue proliferation that can occur when a ponticis too close to the residual ridge
PerelPontic

15. SPECIAL PONTIC DESIGNS
LoweryAuthurpontic Pontic clasp Orthodontic aligner pontic
Notch pontic Schwartz pontic

16. RETAINERS
IN FIXED PARTIAL DENTURE

17. CLASSIFICATION OF RETAINERS IN FPD
I) According to degree of tooth coverage:
•Full veneer crowns
•Partial veneer crowns
•Conservative ( minimal preparation) retainers
Full-veneer Partial-veneer Conservative retainer

18. CLASSIFICATION OF RETAINERS IN FPD
II) According to material of fabrication
• All metal retainers
• Metal ceramic retainers
• All ceramic retainers
• All acrylic retainers

19. FACTORS AFFECTING CHOICE OF
RETAINERS IN FPD
Alignment of
abutment teeth
and retention
Appearance
The condition
of the
abutment teeth
Cost
Preservation of
tooth structure

20. CONNECTORS
IN FIXED PARTIAL DENTURE

21. CLASSIFICATION OF CONNECTORS IN FPD
I) According to rigidity
• Rigid connectors
• Non-rigid connectors
◦-Tenon-Mortise connectors
◦-Loop connectors
◦-Split ponticconnectors
◦-Cross pin and wing connectors

22. RIGID CONNECTORS
CASTED
•Connectors to be cast are also waxed on the definitive
cast before reflowing and investing of the pattern.
•The presence of a cast connector makes the process
of investing somewhat more awkward: Access to the
proximal margin is impeded, and the pattern cannot
be held proximally during removal from the die.

23. RIGID CONNECTORS
SOLDERED

24. NON-RIGID CONNECTORS:
TENON-MORTISE FOR PIER ABUTMENTS

25. NON-RIGID CONNECTORS:
LOOP CONNECTOR FOR SPACING

26. NON-RIGID CONNECTORS:
SPLIT PONTIC CONNECTOR FOR PIER ABUTMENTS
Split ponticconnector
( A) The medial segment, which is cemented first , has a distal shoe in the gingival portion of the pontic
(B) The distal segment of the ponticcovers the mesiogingivalpart of the ponticwhen the distal retainer is cemented

27. NON-RIGID CONNECTORS:
CROSS PIN AND WING CONNECTOR FOR TILTED ABUTMENTS
The distal retainer and wing should be
cemented first
The retainer-ponticsegment is cemented
over the wing

28. THANK YOU