1 FIXED PARTIAL DENTURES

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Relation of Tooth Loss to the Edentulous Ridge Gross soft tissue defects Knife-edge ridge Loss of interdental papillae • Traumatic injury • Ablative surgery Indications for a Fixed Partial Denture Contraindications for Fixed Partial Dentures • Replace function of missing teeth • Stabilize occlusion – drifting, prematurities • Provide esthetics and phonetics • Comfort • Properly distributed abutments • Both ends of edentulous space • Reasonable span length • Biomechanically solid abutments • Restorable • Periodontally stable • No apical pathosis (vital or RCT) • Long edentulous spans / no distal abutment / non-restorable abutment • Poor 1 o abutments: tipped teeth / divergent alignment / periodontally weakened / short clinical crowns / insufficient # abutments • Unresolved periodontal disease / high caries index and risk • Severe loss of tissue in edentulous ridge • Minimally restored teeth where an implant retained restoration is preferable. Selection of the Type of Prosthesis for the Partially Edentulous Patient • Removable Partial Denture • Tooth-Supported Fixed Partial Denture (FPD) – Resin-Bonded Fixed Partial Denture – Cantilever Fixed Partial Denture • Implant-Supported Fixed Partial Denture • Factors to consider – Biomechanical, periodontal, esthetic, financial – Treatment simplification Treatment Options for Tooth Loss Removable Partial Denture (RPD) • Long edentulous spans / no distal abutment / multiple edentulous spaces • Tipped / widely divergent abutments / few abutments • Periodontally weakened 1 o abutments • Severe loss of tissue in residual ridge 2
Disadvantages of Removable Prostheses Conventional Fixed Partial Denture • Soft tissue irritation of edentulous ridge / dry mouth • Less comfortable than FPD – Large tongue – Unfavorable attitude toward RPD • Esthetics often inferior to FPD • Abutment on each end • Periodontally sound abutments, straight alignment • No gross soft tissue defect • Dry mouth increases risk of failure Resin-Bonded Fixed Partial Denture Resin-Bonded Fixed Partial Denture • Conservative, enamel preparation • Single missing tooth; slight - moderate tissue resorption • Good axial alignment and light occlusal stresses • Especially indicated for younger patients Aquilino & Gratton, • Conservative, enamel preparation • Single missing tooth; slight - moderate tissue resorption • Good axial alignment and light occlusal stresses • Especially indicated for younger patients Posterior Resin-Bonded FPD Implant-Supported Crown / Fixed Partial Denture • Occlusal rests; 180 o encirclement of axial tooth structure. • Single molar replacement requires minimum occlusal load. • Indications: insufficient abutments / no distal abutment • Single tooth implant saves virgin adjacent teeth • Limitations: availability of bone / ridge configuration 3
Page 1: FIXED PARTIAL DENTURES Treatment Pl
Page 5 and 6: Abutment Evaluation: Remove all car
Page 7 and 8: Abutment Evaluation: Crown-Root Rat
Page 9 and 10: Biomechanical Problems: Bending or
Page 11 and 12: SPECIAL PROBLEMS: Pier Abutments
Page 13 and 14: SPECIAL PROBLEMS: Tilted Molar Abut
Page 15: Cantilever FPD: Replacement of Firs

1 FIXED PARTIAL DENTURES

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