Bridge prostheses components pontic and abutment retainers Technology of mandibular hygienic bridge prosthesis using the Adapta system Its a prosthetic appliance permanently attached to remaining teeth which replaces one or more missing teeth ID: 916944
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Slide1
Slide2PROSTHETIC REHABILITATION OF PARTIALY EDENTULOUS DENTITIONS BY FIXED PARTIAL DENTURES
Bridge prostheses – components, pontic and abutment retainers.
Technology of
mandibular
hygienic bridge prosthesis using the “
Adapta
” system
Slide3Slide4Slide5It’s a prosthetic appliance, permanently attached to remaining teeth, which replaces one or more missing teeth.
abutment
retainer
Abutment preparation
connector
pontic
Fixed partial denture “bridge”
Slide6Slide7Slide8Slide9Physiological mode of transmission of masticatory pressure
Slide10What are Dental Tooth Bridges?
Dental bridges are fixed prosthetic devices. They are cemented onto existing teeth or implants, and can only be removed by a dentist. As a fixed denture dental bridge made to replace one or more missing teeth.
Bridges can be supported by natural teeth, implants or a combination of teeth and implants.
Slide11Slide12Slide13What are the parts of a typical dental bridge (fixed)?
A dental bridge essentially consists of: A pontic or false tooth used to replace the missing tooth, which is made from gold, alloys, porcelain or a combination of these materials. Two crowns - serving to anchor the false tooth in place.
Slide14Slide15One or two adjacent teeth are missing in the same arch.
The supportive tissues are healthy.
Suitable abutment teeth are present.
The patient is in good health and wants to have the prosthesis placed.
The patient has the skills and motivation to maintain good oral hygiene.
Indications for Fixed Prosthodontics
Slide16Necessary supportive tissues are diseased or missing.
Suitable abutment teeth are not present.
The patient is in poor health.
The patient is not motivated to have the prosthesis placed.
The patient has poor oral hygiene habits.
The patient cannot afford the treatment.
Contraindications for Fixed Prosthodontics
Slide17Definition
Pontic is defined as an artificial tooth on a fixed dental prosthesis that replaces a missing natural tooth , restores its function and usually fills the space previously occupied by the clinical crown.
Slide18Dental bridges components:
Crowns on the supporting teeth
Pontic
Connectors
Slide19Slide20B) Classification of pontics
Pontic
designs
are classified into two major groups
:
*Those that
contact
the oral mucosa
*Those that
do not
**Based on
type of materials
for fabrication
**Based on
method of fabrication
Pontic
selection
is
based primarily on esthetics and oral hygiene.
Slide21Pontic design
Proper Pontic Design leads to Success of the FPD
*The pontic must be carefully designed and fabricated not only to facilitate
plaque control
of the tissue surface and around the adjacent abutment teeth but also to the existing
occlusal
considerations .
*
The
design
of pontic
depends on
various
factors
:
Pretreatment assessment ,Pontic classification ,Biological considerations ,Mechanical considerations and Pontic fabrication .
Slide22Optimal
pontic
design
Slide23Metal dental bridges
Slide24Slide25Slide26Dental bridges appearance
Nickel Sensitivity.
Slide27Slide28Ideal Requirements
1-A pontic should
restore the function
of the tooth it replaces
2-It should provide
good esthetics
3-It should be
biocompatible
with continued oral health and comfort.
4-It should permit effective
oral hygiene
.
5-It should
preserve underlying mucosa and bone.
Slide29Requirements:
Crowns on the supported teeth-
number, status
Law
Vustrov
abutment retainers
-
type and choice
Pontic
- configuration and type
Slide30REQUIREMENTS :
RESTORATION OF OCCLUSAL FUNCTION
Occlusal
harmony during
mandibular
movement
Restoration of the swallowing function
Slide31Integrirty
of gingival tissues, proper marginal fit, contour compatibility with gingival tissues.
Crown contour
compatible with the buccal, labial and lingual soft and hard structures of the mouth
REQUIREMENTS
:
Slide32REQUIREMENTS :
Restoration of phonetics
Arrangement of teeth
Correct anatomy of the crown portion
Slide33REQUIREMENTS :
Restoration of Esthetics
Harmony with healthy gingival tissues
Harmony between facial features and crown contour
Restoration of natural coloring
Slide34How do Bridges Work?
Evidence
–
existence of mixing teeth, empty spaces, gum diseases and bad bite.
Function
- Bridges are commonly used to replace one or more missing teeth. They span the space where the teeth are missing. Bridges are cemented to the natural teeth or implants surrounding the empty space. These teeth, called
abutments
, serve as anchors for the bridge. A replacement tooth, called a
pontic,
is attached to the crowns that cover the abutments.
Slide35How to make bridges?
Evaluation of the medical – biological basis of the masticatory apparatus
-
the tooth (or teeth) must be reduced in size so that the crown or bridge will fit over it
properly –
choice
and
reducing the supporting tooth/teeth
Correct impression
Making temporary bridge
Removing of temporary bridge and cemented the new fixed definitive bridge
Slide36About the Procedure
Slide37A) Pretreatment assessment
Certain
procedures enhance the success of pontics
they are:
1
Pontic space
2
Residual ridge contour
3
Gingival architecture preser
vation
Slide38Slide39Slide40Slide41Slide42Provides the laboratory technician with a reproduction of a patient’s bite and opposing arch registration for designing the anatomic structures of the fixed prosthetic.
Open bite
Closed bite
Bite Registration
Slide43The balanced restoration of teeth
Technology of
mandibular
hygienic resin -bridge prosthesis using the “Adapta” system
Slide44Pontic Configuration
High hygienic situated at the distance - American
Heart-healthful hygienic
Extended medullary true hygienic
Slide45Pontic Designs
Smoot, round surface
Slide46Saddle or ridge lap pontics
Slide47Modified ridge lap
Slide48Sanitary or hygienic
Slide49Conical pontic
Slide50Ovate pontic
Slide51MUCOSAL CONTACT :
Ridge lap
Modified ridge lap
Ovate
Conical
NO MUCOSAL CONTACT :
Sanitary/ hygienic
Modified sanitary/ hygiene
A
Slide52Slide53Retention and Resistance
Slide54Pontic and Edentulous Ridges
Slide55Necessary supplies, equipment and tools
ADAPTA DEEP – DRAWING SYSTEM
Slide56Necessary supplies, equipment and tools
Modelling instruments
Slide57Slide58Two-layered plaster model with removable logs
Slide590,1 y 0,6 mm
Slide60Slide61Slide62Slide63Rapid-
Ringless
-System
Plastic sticks and
hollow plastic sticks
Slide64Slide65Slide66Slide67Slide68Hydraulic Flask Press
Slide69Slide70Slide71Slide72Slide73Slide74Slide75Slide76Slide77LITERATURE
Fundamentals of Fixed Prosthodontics
Herbert T. Shillingburg,
Jr
, DDS
Sumiya Hobo, DDS, MSD, PhD
Lowell D. Whitsett, DDS
Richard Jacobi, DDS
Susan E. Brackett, DDS, MS
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