Intro to Fixed Prosthodontics

Fixed Prosthodontics

Replacement and/or restoration of teeth by artificial substitutes that are not readily removed from the mouth

Cement

Fixed

Cemented or bonded in place

Patient cannot remove

Crowns, bridges, inlays, onlays

Integrated into occlusion permanently

Removable

Patient removes for cleaning

Retained by clasps or suction

Full dentures, partial dentures

Tissue-borne or implant retained

Indications of Crowns

Extensive caries

Fractured or cracked teeth requiring full coronal coverage

Following root canal therapy - protection of a weakened tooth

Abutment for a fixed partial denture (bridge)

Esthetic or occlusal rehab

Extensive Caries

Insufficient sound tooth structure for a direct restoration

Requirements of a Crown

Preservation of tooth structure

Retention and resistance form

Structural durability of the restoration

Marginal integrity

Preservation of the periodontium

Crown Types

Full cast metal

PFM

Partial coverage

All-ceramic

Full Cast Metal

Maximum strength and durability

Gold Alloy

Posterior teeth

Best for longevity

Porcelain Fused to Metal (PFM)

Metal substructure with ceramic veneer

Combines strength with esthetics

Anterior and posterior

All-Ceramic

No metal coping

Optimal esthetics and light transmission

Lithium disilicate or zirconia

Partial Coverage

¾ crown

Conserves tooth structure

Requires sound remaining tooth

Good resistance form needed

Inlay and/or onlay