الفهرس 
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Abstract
Teeth do not possess the regenerative ability found in most other tissues. Therefore, once enamel
or dentin is lost as a result of caries, trauma, wear or preparation to replace a missing teeth
restorative materials must be used to reestablish form and function.
Teeth require preparation to receive restorations, and these preparations must be based on
fundamental principles from which basic criteria can be developed to help in predicting the success
of prosthodontics treatment . (1)
Restoring teeth is a big challenge specially prosthesis which combine anterior and posterior teeth.
As they need to combine both esthetic and function equally because it’s a functional prosthesis in
esthetic zone .
Different treatment options are available which may not include teeth preparation (implant
supported prosthesis and removable partial denture) or other options which include teeth
preparation ranging from minimum reduction to full coverage reduction with different designs (fixed
fixed, cantilever, resin bonded fixed partial denture) .