In the treatment of tooth decays, generally metal and composite materials are used as filling material. However, for teeth with excessive material loss we prefer porcelain fillings since they are more esthetic and stronger. Inlays-onlays are fillings that are prepared in laboratories and used in cleaning of decay tissue.
What are the advantages of Inlays and onlays?
They are esthetic
Their compatibility with teeth (esp. in interfaces) is perfect.
Their color match is perfect and oral fluids do not influence them.
They are very strong
They have physical characteristics values similar to natural teeth.