Magnification avoid unnecessary destruction of healthy dental tissue because it is possible to see the boundaries between the restorative material and dental tissue in great detail. Without magnification, this cannot be seen with the same clarity leading to more extensive tooth preparation, loss of healthy tissue and potential damage to the pulp. Preparation for indirect restorations are enhanced with the aid of the microscope as prepared surfaces can be finished with greater accuracy leading to better fitting restorations. We will practice the concept of minimal invasive preparation under magnification to enhance final aesthetic outcomes. Overview types of preparations in modern dentistry. Will discuss about provisionals restorations accuracy. Overview techniques for final impressions, and finally types of materials and bonding for cementations under isolation with rubber dam.