9_RESIN-BONDED_FIXED_PARTIAL_DENTURE.ppt

Introduction to RBFPD: Defineing what RBFPD is and its significance in modern dentistry. Explaining how it differs from other types of dental prosthetics.

Components and Design: Describing the components of an RBFPD, including the pontic (false tooth), retainers, and connectors. Explaining the design considerations for achieving optimal aesthetics and functionality.

Indications and Contraindications: Discusses when RBFPDs are indicated for use, such as in cases of single missing teeth or when adjacent teeth are healthy. Highlighting contraindications, such as poor oral hygiene or insufficient tooth structure for bonding.

Preparation and Fabrication: In Details the steps involved in preparing the abutment teeth and fabricating the RBFPD, including impression-taking, laboratory fabrication, and fitting procedures.

Advantages and Disadvantages: Enumerate the advantages of RBFPDs, such as minimal tooth reduction and improved aesthetics. Address potential disadvantages, such as limited strength compared to traditional bridges.

Clinical Considerations and Maintenance: Provide guidance on clinical considerations during placement, including bonding techniques and occlusal adjustment. Discuss patient education regarding oral hygiene practices and regular dental check-ups for maintenance.

Case Studies and Clinical Outcomes: Present case studies showcasing successful RBFPD placements and their long-term clinical outcomes. Include photographs or radiographs to illustrate the before-and-after effects.

Future Trends and Innovations: Touch upon emerging trends and innovations in RBFPD technology, such as the use of CAD/CAM technology for precise fabrication.

Conclusion: Summarize key points discussed in the presentation and emphasize the importance of RBFPDs in restoring dental function and aesthetics.

**Slide 1: Title Slide**
- Title: Resin-Bonded Fixed Partial Dentures in Dentistry
- Subtitle: A Comprehensive Overview
- Your Name/Institution
- Date

**Slide 2: Introduction**
- Definition of RBFPD
- Importance in modern dentistry
- Objectives of the presentation

**Slide 3: Components of RBFPD**
- Pontic (false tooth)
- Retainers
- Connectors

**Slide 4: Design Considerations**
- Aesthetics
- Functionality
- Material selection

**Slide 5: Indications and Contraindications**
- When to use RBFPD
- Contraindications to consider

**Slide 6: Preparation and Fabrication**
- Steps involved
- Impression-taking
- Laboratory fabrication
- Fitting procedures

**Slide 7: Advantages of RBFPD**
- Minimal tooth reduction
- Improved aesthetics
- Preserved tooth structure

**Slide 8: Disadvantages of RBFPD**
- Limited strength compared to traditional bridges
- Potential for debonding

**Slide 9: Clinical Considerations**
- Bonding techniques
- Occlusal adjustment
- Patient communication

**Slide 10: Maintenance**
- Oral hygiene practices
- Regu

1. RESIN-BONDED FIXED
PARTIAL DENTURE
Writing
by
Dr. Osama Fawzy
Head department of Crowns &
bridges

3. DEFINITION
BRIDGE THAT CONSIST OF ONE OR
MORE PONTICS SUPPORTED BY A THIN
METAL RETAINER PLACED LINGUALLY AND
PROXIMALLY ON THE ABUTMENT TEETH
AND IT RETAINED BY RESIN CEMENT.
IT DEPEND ON ADHESIVE BONDING FOR RETENTION

4. Indication
1-Cariesfreeabutment

5. 2-Periodontal splint

6. 3-Mandibular incisor replacement

7. 4-maxillary incisor replacement

8. 5-Single post. tooth replacement

9. Contraindication
1-Insufficient sound enamel

10. 2-Long edentulous span
3-Short clinical crown
4-Above average
lateral force

11. 5-Deep bite

12. 6-Esthetic difficulty
7-Ni allergy

13. Advantages
No anesthesia
tooth prep.&easy impression
pulp trauma
periodontal irritation
No provisional restoration
Rebonding
chair time..
Low cost

14. Disadvantages
longevity
Space correction difficult
No alignment correction
Limited Pt selection
Single abutment

15. Attachment composed
1-surface ttt of metal
2-enamel etching
3-bonding resign

16. Rochette Maryland
Virginia
tin plating
cast mesh FPD
types

17. 1-mechanical bonding
A-cast perforated wing
( Rochette)
-Wing like retainer with
funnel shape
perforation
-Exposed to increased
stresses and abrasion
leakage limited
mechanical retention

18. B-Virginia bridge
Lost salt tech.
–Na-Cl (size149-250μm)
–advantages
on cast abutments coated with model spray & then
lubricant.
-incorporate Na-Cl crystals ( 149 -250 um) on fitting
surface of abutments on the cast to roughen the
surface.
-leaving (0.5 -1 mm) crystal free margin.
-fabricate resin pattern then cleaned with solvent and
placed in water in an ultrasonic cleaner to dissolve the
salt leaving cubic voids

19. Virginia bridge
Disadvantages:
Thickness of casting to undercut
thickness.
no long-term results.
can’t use in metal-ceramic alloy.

20. C-Cast mesh FPD
Cast mesh FPD
–Net like nylon
mesh
-produce roughness before alloy is casted any metal
-a net-like nylon mesh is placed on lingual surfaces ,then
covered by & incorporated into retainer wax.
-then investing & casting.

21. disadvantages
Difficult to adapt Thick metal framework
-higher micro leakage
-reducing bond strength (wax runs freely into mesh =block out
the undercuts.

22. II-Micromechanical
retention
Electrolytic etching the fitting surface of
Ni-Cr and Cr-Co havethe following
advantages:
•Etched metal to resin bond stronger than
enamel to resin
•Highly polished lingual surface resist plaque
1-Maryland bridge

23. Electrolytic Etching Technique
1-two steps:
For non Br Ni-Cr alloy=== 3.5% nitric acid
with current 250 ma/cm² for 5 min.
For Br-Ni-Cr alloy ===10% sulfuric acid for
3 minute
Followed by hydrochloric acid immersion for
10min
2-one step: (gel etching)
Combined solution of sulfuric acid
&hydrochloric acid in an activated
ultrasonic cleaners
A sensitive technique:
Over etching = electro polished surface
Contamination=lower bond strength

24. 1-Maryland bridge

25. 2-sandblasting
-with 50 -150 Micro
meter aluminum
oxide.
(micromechanical
retention)
-it is more robust than
etched surface.

26. 3-porous metal coating
Firing the fine particles of stainless steel
powder to metal created metal powder

27. B-Chemical treatment
1-Tin plating
–Japan
–Use tin amide solution
tin amide plating solution
precious alloy as tin plated.
-tin form organic complexes
with resin cement result
in greater bond strength
(chemical +mechanical).

28. 2-ion coating surface treatment
3-application of Adlloy was applied dental
precious alloy its improving the adhesion
with 4-meta cement
4-silicoater tech: silica carbon application
on the metal improving adhesion

29. Methods to improve adhesive
bonding
Heating alloy:
Improving the bonding between the metal
and adhesive cement 4-meta
1-single heating 3-4 min at 400c allow to
heat at room temp
2-douple heating” at 800c for one h and
acid cleaning heat again at 650c for 10
and room temp

30. 3-immersion in oxidizing solution.
Composed of 3% sulfuric acid and1% K
permanganate
Tech.
Metal immersed in solution for 2 min, and cleaned
with distilled water
This technique developed superior bonding for base
metal alloy.
4-immersion in concentrated nitric acid:
Devolved thin oxide layer strongly adhere with 4-
meta

31. TOOTH PREPARATION
1-AXIAL REDUCTION
Guide planes
180°of tooth
proximal undercut must be removed
2-FINISH LINES
Light chamfer
1mm supra gingival
Occlusal clearance 0.5mm
3-VERTICAL STOPS
2-3 counter sink in incisors
Cingulm rest on canine
Occlusal rest on posteriors
4-RESISTANCE FORM
Two grooves on opposite sides
create wraparound effect

32. Laboratory procedures
1-wax framework & cast it .
2-build up pontic in porcelain, fire it &
contour it.
3-evaluate restoration clinically.
4-charactterize & glaze it.
5-clean fitting surface with aluminum oxide.
6-rinse & dry.

33. Cementation:
1.Check occlusion ,Isolation,cleaning
2.Acid etch enamel
3.Panavia ED primer
4.dry ED primer

34. Surface treatment of enamel
1-Acid etching:
by 40% phosphoric acid for
60sec showing frosted appearance
2-laser etching:
cleaning and drying the tooth
surface and isolated , small amount of
leaser

35. Bonding procedure
1-phosphate ester added to the monomer of
the panivia F to increasing the chemical
bonding

36. Causes of failure
1-poor path of insertion
2-poor enamel bonding
3-metal allergy
4-insufficient preparation
5-Mandibular protrusion
6-metal contamination
7-incorrect cement manipulation
8-inappropriate luting cement

37. Thank you