牙体解剖学精品课件（中山大学）20.根管治疗后牙体修复.pptxVIP

Restoration of the Endodontically Treated Tooth; Outline; Outline;● Collagen structure ● Tooth moisture 12.10% (Vital dentin 12.35%) ● Mineral composition and content ● 14% reduction in strength and toughness;2. Increased fracture possibility;Fracture Resistance and Tooth Stiffness of ETT;The more dentin is kept the longer the tooth is kept;The presence of residual tissue in the cervical area (ferrule for restorations) and a larger amount of residual tissue in general increase tooth resistance to fracture.;;3. Esthetic changes;Special Features of Endodontically Treated Tooth; Outline;Significance of the Restoration;Significance of the Restoration;2011－11－26 17：13;Aims of the Restorations;MIEBRD 一期 胡璐璐医师提供; Outline;1. Is the tooth restorable?;endomac;1. Is the tooth restorable?;2. Timing of restoration;3. Asseement of exist endodontic treatment;3. Asseement of exist endodontic treatment;3. Asseement of exist endodontic treatment;4. Caries susceptibility;5. Periodontal evaluation;6. Esthetic consideration;Clinical Check;7. The patient; Outline;Restorative Materials and Options;● Composition Polymer matrix Filler particles A coupling agent Luorescence pigment UV stabilizer ;● Compressive strengths 280 Mpa, Young modulus 10~16 GPa ● Highly esthetic, High mechanical properties ● Conservative tooth preparation ● Reinforce the remaining tooth structure ● one visit ;● Shrinkage: C-factor ● microleakage ● Staining ;INDICATIONS;● Be as conservative as possible ● Point angle and line angle are rounded ● Preserve sound enamel at contact areas/points ● Bevelled enamel wall at the cavosurface margin ● Enough depth(≥2mm) and width ● Extend to the root canal 1-2mm as the post core when needed ;2. Amalgam Restoration;2. Amalgam Restoration;2. Amalgam Restoration;2. Amalgam Restoration;2. Amalgam Restoration;● Direct filling enough depth(≥2mm) and width ● Amalgam core extend to the root canal 1-2mm as the post;3. CAD/CAM;3. CAD/CAM;3. CAD/CAM;● inlays, onlays