There are many reasons for multiple tooth loss, such as poor oral hygiene in some people, which can cause decay of multiple teeth. There are also multiple tooth loss due to trauma external force, tooth wear and tear. After tooth loss, it is necessary to make a suitable restoration plan to complete according to the degree of loss. Teeth that have undergone endodontic treatment are more brittle and have to be restored by full crown restoration to protect the crown and restore the shape and physiological function. If multiple teeth are worn causing difficulty and weakness in chewing, it may be necessary to reconstruct the occlusion and then take the appropriate restoration to improve the symptoms affecting chewing and aesthetics.