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This Concept Map, created with IHMC CmapTools, has information related to: PONTIC-material used part 2, Based Metal Alloys surface casting Rougher, disadvantages low shear strength, Acrylic Resin-veneered restoration Disadvantages resistance to abarasion, cause the fixed prosthodontic appliance to "sag" and distort. hence, based metal alloys should be Sag-resistant, PONTIC CLASSIFICATION: Based on material used ???? Resin-veneered Pontics, Resin-veneered Pontics old-generation Acrylic Resin-veneered restoration, Based Metal Alloys advantages higher yield strength, Acrylic Resin-veneered restoration Disadvantages no chemical bond, produces a surface reaction with investment will worsen Rougher, Acrylic Resin-veneered restoration Disadvantages leakage at metal-resin interface, dimensional change from water absorption and thermal fluctuations due to high surface area of a thin resin veneer, advantages high compressive strength, Based Metal Alloys advantages cheaper than other alloy system, glazed porcelain most niocompatible of all pontic material, most niocompatible of all pontic material excellent ability to resist plaque accumulation, must resist thermally induced stress otherwise cause the fixed prosthodontic appliance to "sag" and distort., disadvantages low tensile strength, leakage at metal-resin interface with restoration discoloration, Composite resin Improved bond, disadvantages expensive