3.1.2.1。Rugury ................................................................................................................................................................................................................ 40 3.1.2.2。机械性能对保留的影响....................................................................................................................................................................................................................................................................................................................... 40 3.1.2.3。Resistance of chewing materials ............................................. 41 3.1.2.4.Structural modifications Improving the properties of new materials .......................................................................................................... 43 3.1.2.5.BioHPP compared to CO-CR ..................................................................... 44 3.2.aesthetic and felt patients .............................................................. 45 3.3.costs ......................................................................................................... 46 3.4.Repair ............................................................................................................. 49 Conclusion ........................................................................................................................................................................................................................................................................................................ 54 Annex 1: .............................................................................................................................. A BIBLIOGRAPH: .........................................................................................................................i