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This Concept Map, created with IHMC CmapTools, has information related to: Sheila part copy complete PONTIC CLASSIFICATION, posterior bridges which are more susceptible to mechanical problems, Metal-ceramic pontics Advantages have greatest esthetic potential as prosthetic replacements for missing teeth, when it is a high stress situation like long span bridges, Metal-ceramic pontics Advantages stronger because porcelain is bonded to the metal substrate rather than cemented to it., Excessive thickness of porcelain predisposes to eventual fracture, bond between composite resin and metal, voids at the porcelain- metal interface that reduce bond strength, occlusal contacts must be placed to avoid the junction including excursive and centric contacts, the concavity is created either through placement of a provisional FPD, Sanitary indication Nonesthetic zones, PONTIC CLASSIFICATION Based on material used Metal-ceramic pontics, Acrylic Resin-veneered restoration Disadvantages dimensional change from water absorption and thermal fluctuations, Sanitary indication impaired oral hygiene, Sanitary Features Convex mesiodistally and faciolingually, Indications used when patient has a high smile line, Resin-veneered Pontics old-generation Acrylic Resin-veneered restoration, the contour of the tissue-contacting area of the pontic should be convex, whenever possible even if a small amount of soft tissue on the ridge must be surgically removed to facilitate it., PONTIC CLASSIFICATION Based on material used All-Metal Pontics, Contraindications when there is residual ridge defects, easier plaque control process cleaning devices passed under the pontic