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Resin Bonded Bridges
1.
2.
3. What are RBB’s?
0 Minimally invasive prosthodontic replacement of
missing teeth.
4. INDICATIONS
0 Short span edentulous areas
0 Pt unwilling or unsuitable for surgical treatment.
0 Needle phobic pts.
0 Post orthodontic fixed retention
0 In periodontally compromised - Splinting
5.
6. CONTRA INDICATIONS
0 Heavily restored abutments
0 Small sized abutments – Peg Laterals
0 Mal-alligned abutments
0 Mobile abutments
0 Long span edentulous area
0 Allergy to base metal alloys
10. RESTORATIVE STATUS:
Minimally restored with good quality
enamel
Resurfacing old restorations
GIC/Amalgam = ?
Composite = ?
0ENDODONTIC STATUS: Vital
teeth, without any pulpal pathosis
11. 0 PERIODONTAL STATUS:
• No active periodontal disease .
• Less than 50% bone loss, a fixed-fixed type of RBB will
act as a splint – is acceptable
• More than 50% bone loss, RBB should be
reconsidered.
12. 0ANGULATION:
0 Assessing the angulation – should be suitable
0 Reducing bulbosity to increase the connector height
0 POSITION:
0 Distal abutment with mesial cantilever is most suitable
17. Degree of Coverage:
0The literature suggests that
the
best outcome for adhesive
bridges can be
achieved where maximum
enamel coverage
18. Anterior teeth:
0 Should include the entire palatal/lingual surface, as
well as extending on to the incisal edge.
0 Endodontically Restored teeth- retention from the
access cavity
20. NO. OF ABUTMENTS
0 Less no of abutments,
low rate of failure.
0 Evidence shows that
fixed-fixed type RBB has
twice the rate of failure
compared to Cantilever
type
0 Partial Debonding.
21. FRAMEWORK RIGIDITY
0 Regidity depends on the
thickness of the
framework.
0 Thickness should be at
least 0.7mm for
anteriors.
0 Thickness should be
increased as the span of
bridge increases